turtles

Summary

Top Publications

  1. pmc Phylogenomic analyses support the position of turtles as the sister group of birds and crocodiles (Archosauria)
    Ylenia Chiari
    Institut des Sciences de l Evolution, UMR5554 CNRS IRD, Universite Montpellier 2, Montpellier, France
    BMC Biol 10:65. 2012
  2. pmc More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs
    Nicholas G Crawford
    Department of Biology, Boston University, Boston, MA 02215, USA
    Biol Lett 8:783-6. 2012
  3. pmc MicroRNAs support a turtle + lizard clade
    Tyler R Lyson
    Department of Geology and Geophysics, Yale University, New Haven, CT 06511, USA
    Biol Lett 8:104-7. 2012
  4. ncbi Marine debris ingestion in loggerhead sea turtles, Caretta caretta, from the Western Mediterranean
    J Tomas
    Marine Zoology Unit, Cavanilles Research Institute of Biodiversity and Evolutionary Biology, University of Valencia, Spain
    Mar Pollut Bull 44:211-6. 2002
  5. pmc Regional management units for marine turtles: a novel framework for prioritizing conservation and research across multiple scales
    Bryan P Wallace
    International Union for Conservation of Nature IUCN SSC Marine Turtle Specialist Group Burning Issues Working Group, Arlington, Virginia, United States of America
    PLoS ONE 5:e15465. 2010
  6. ncbi An ancestral turtle from the Late Triassic of southwestern China
    Chun Li
    Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of SciencesPO Box 643, Beijing 100044, China
    Nature 456:497-501. 2008
  7. ncbi Population genetics and phylogeography of sea turtles
    B W Bowen
    Hawaii Institute of Marine Biology, University of Hawaii, PO Box 1346, Kaneohe, HI 96744, USA
    Mol Ecol 16:4886-907. 2007
  8. ncbi Fusarium solani is responsible for mass mortalities in nests of loggerhead sea turtle, Caretta caretta, in Boavista, Cape Verde
    Jullie M Sarmiento-Ramírez
    Departamento de Micologia, Real Jardín Botánico CSIC, Madrid, Spain
    FEMS Microbiol Lett 312:192-200. 2010
  9. ncbi Balanced inhibition and excitation drive spike activity in spinal half-centers
    Rune W Berg
    Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen DK 2200 Copenhagen N, Denmark
    Science 315:390-3. 2007
  10. ncbi Multiple genome alignments facilitate development of NPCL markers: a case study of tetrapod phylogeny focusing on the position of turtles
    Xing Xing Shen
    State Key Laboratory of Biocontrol, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat Sen University, Guangzhou, People s Republic of China
    Mol Biol Evol 28:3237-52. 2011

Research Grants

  1. The role of the primitive choana in amniote craniofacial morphogenesis
    John Abramyan; Fiscal Year: 2013
  2. CELLULAR MECHANISMS OF THE VESTIBULAR SYSTEM
    Anna Lysakowski; Fiscal Year: 2013
  3. Salmonella polymicrobial interactions
    BRIAN M AHMER; Fiscal Year: 2012
  4. CELLULAR MECHANISMS OF THE VESTIBULAR SYSTEM
    Jay Goldberg; Fiscal Year: 2009
  5. PHYSIOLOGICAL MECHANISMS OF VERTEBRATE FREEZE TOLERANCE
    RICHARD LEE JR; Fiscal Year: 1991
  6. EVOLUTION OF THE RETICULAR FORMATION
    WILLIAM CRUCE; Fiscal Year: 1990
  7. MECHANISMS OF FLUID BALANCE IN LOWER VERTEBRATE LUNGS
    ALLAN SMITS; Fiscal Year: 1991
  8. Modulation of Muscle Activation and Strain in Turtles
    RICHARD BLOB; Fiscal Year: 2001
  9. Number Words and Number Concepts
    BARBARA SARNECKA; Fiscal Year: 2009
  10. Biomechanics and Energetics of Turtle Locomotion
    PETER ZANI; Fiscal Year: 2004

Detail Information

Publications320 found, 100 shown here

  1. pmc Phylogenomic analyses support the position of turtles as the sister group of birds and crocodiles (Archosauria)
    Ylenia Chiari
    Institut des Sciences de l Evolution, UMR5554 CNRS IRD, Universite Montpellier 2, Montpellier, France
    BMC Biol 10:65. 2012
    The morphological peculiarities of turtles have, for a long time, impeded their accurate placement in the phylogeny of amniotes...
  2. pmc More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs
    Nicholas G Crawford
    Department of Biology, Boston University, Boston, MA 02215, USA
    Biol Lett 8:783-6. 2012
    We present the first genomic-scale analysis addressing the phylogenetic position of turtles, using over 1000 loci from representatives of all major reptile lineages including tuatara...
  3. pmc MicroRNAs support a turtle + lizard clade
    Tyler R Lyson
    Department of Geology and Geophysics, Yale University, New Haven, CT 06511, USA
    Biol Lett 8:104-7. 2012
    Despite much interest in amniote systematics, the origin of turtles remains elusive...
  4. ncbi Marine debris ingestion in loggerhead sea turtles, Caretta caretta, from the Western Mediterranean
    J Tomas
    Marine Zoology Unit, Cavanilles Research Institute of Biodiversity and Evolutionary Biology, University of Valencia, Spain
    Mar Pollut Bull 44:211-6. 2002
    Marine debris represents an important threat for sea turtles, but information on this topic is scarce in some areas, such as the Mediterranean sea...
  5. pmc Regional management units for marine turtles: a novel framework for prioritizing conservation and research across multiple scales
    Bryan P Wallace
    International Union for Conservation of Nature IUCN SSC Marine Turtle Specialist Group Burning Issues Working Group, Arlington, Virginia, United States of America
    PLoS ONE 5:e15465. 2010
    ....
  6. ncbi An ancestral turtle from the Late Triassic of southwestern China
    Chun Li
    Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of SciencesPO Box 643, Beijing 100044, China
    Nature 456:497-501. 2008
    The origin of the turtle body plan remains one of the great mysteries of reptile evolution. The anatomy of turtles is highly derived, which renders it difficult to establish the relationships of turtles with other groups of reptiles...
  7. ncbi Population genetics and phylogeography of sea turtles
    B W Bowen
    Hawaii Institute of Marine Biology, University of Hawaii, PO Box 1346, Kaneohe, HI 96744, USA
    Mol Ecol 16:4886-907. 2007
    The seven species of sea turtles occupy a diversity of niches, and have a history tracing back over 100 million years, yet all share basic life-history features, including exceptional navigation skills and periodic migrations from ..
  8. ncbi Fusarium solani is responsible for mass mortalities in nests of loggerhead sea turtle, Caretta caretta, in Boavista, Cape Verde
    Jullie M Sarmiento-Ramírez
    Departamento de Micologia, Real Jardín Botánico CSIC, Madrid, Spain
    FEMS Microbiol Lett 312:192-200. 2010
    ..Thus, this work demonstrates that a group of strains of F. solani are responsible for the symptoms observed on turtle-nesting beaches, and that they represent a risk for the survival of this endangered species...
  9. ncbi Balanced inhibition and excitation drive spike activity in spinal half-centers
    Rune W Berg
    Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen DK 2200 Copenhagen N, Denmark
    Science 315:390-3. 2007
    ..These findings show that balanced excitation and inhibition and irregular firing are fundamental motifs in certain spinal network functions...
  10. ncbi Multiple genome alignments facilitate development of NPCL markers: a case study of tetrapod phylogeny focusing on the position of turtles
    Xing Xing Shen
    State Key Laboratory of Biocontrol, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat Sen University, Guangzhou, People s Republic of China
    Mol Biol Evol 28:3237-52. 2011
    ..12S-16S) are used to infer the higher level relationships of tetrapods, with emphasis on the debated position of turtles. Both maximum likelihood (ML) and Bayesian analyses on the concatenated data combining the 23 markers (21,137 bp) ..
  11. ncbi Phenotypically linked dichotomy in sea turtle foraging requires multiple conservation approaches
    Lucy A Hawkes
    Marine Turtle Research Group, Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Cornwall Campus, Penryn TR10 9EZ, United Kingdom
    Curr Biol 16:990-5. 2006
    Marine turtles undergo dramatic ontogenic changes in body size and behavior, with the loggerhead sea turtle, Caretta caretta, typically switching from an initial oceanic juvenile stage to one in the neritic, where maturation is reached ..
  12. ncbi Evidence for cell cycle suppression and microRNA regulation of cyclin D1 during anoxia exposure in turtles
    Kyle K Biggar
    Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, ON, Canada
    Cell Cycle 11:1705-13. 2012
    ..of cyclin D1 was analyzed in both whole-cell and nuclear fractions of liver, kidney and skeletal muscle from turtles exposed to 5 or 20 h of submergence anoxia...
  13. pmc Global conservation priorities for marine turtles
    Bryan P Wallace
    IUCN SSC Marine Turtle Specialist Group, Arlington, Virginia, United States of America
    PLoS ONE 6:e24510. 2011
    ..Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as ..
  14. ncbi Comparing and combining distance-based and character-based approaches for barcoding turtles
    B N Reid
    Department of Forest and Wildlife Ecology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA
    Mol Ecol Resour 11:956-67. 2011
    ..and may prove to be a vital aid in conserving organisms that are threatened by illegal wildlife trade, such as turtles (Order Testudines)...
  15. ncbi Sparse supermatrices for phylogenetic inference: taxonomy, alignment, rogue taxa, and the phylogeny of living turtles
    Robert C Thomson
    Department of Evolution and Ecology and Center for Population Biology, University of California, Davis, CA 95616, USA
    Syst Biol 59:42-58. 2010
    ..These include taxonomic standardization, automated alignment, and the identification of rogue taxa. We use turtles as an exemplar clade and present a well-supported species-level phylogeny for two-thirds of all turtle species ..
  16. ncbi Assessing concordance of fossil calibration points in molecular clock studies: an example using turtles
    Thomas J Near
    Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee 37996 1610, USA
    Am Nat 165:137-46. 2005
    ..multiple fossil calibrations are available for a clade and apply our method to a molecular phylogeny of living turtles with fossil calibration times for 17 of the 22 internal nodes in the tree...
  17. ncbi Evolution of the turtle body plan by the folding and creation of new muscle connections
    Hiroshi Nagashima
    Laboratory for Evolutionary Morphology, RIKEN Center for Developmental Biology, 2 2 3 Minatojima minami, Kobe 650 0047, Japan
    Science 325:193-6. 2009
    ..We propose that the evolutionary origin of the turtle body plan results from heterotopy based on folding and novel connectivities...
  18. pmc Small-scale fisheries bycatch jeopardizes endangered Pacific loggerhead turtles
    S Hoyt Peckham
    Department of Ecology and Evolutionary Biology, University of California at Santa Cruz, Santa Cruz, California, United States of America
    PLoS ONE 2:e1041. 2007
    ..industrial-scale fisheries can cause declines in migratory megafauna including seabirds, marine mammals, and sea turtles, the impacts of small-scale fisheries have been largely overlooked...
  19. ncbi Comprehensive survey of carapacial ridge-specific genes in turtle implies co-option of some regulatory genes in carapace evolution
    Shigehiro Kuraku
    Laboratory for Evolutionary Morphology, Center for Developmental Biology CDB, RIKEN, Kobe 650 0047, Japan
    Evol Dev 7:3-17. 2005
    ..These findings indicate that the acquisition of the turtle shell did not involve the creation of novel genes, but was based on the co-option of pre-existing genes...
  20. ncbi Jellyfish aggregations and leatherback turtle foraging patterns in a temperate coastal environment
    Jonathan D R Houghton
    Department of Biological Sciences, Institute of Environmental Sustainability, University of Wales Swansea, Singleton Park, Swansea SA2 8PP, United Kingdom
    Ecology 87:1967-72. 2006
    Leatherback turtles (Dermochelys coriacea) are obligate predators of gelatinous zooplankton. However, the spatial relationship between predator and prey remains poorly understood beyond sporadic and localized reports...
  21. ncbi Breeding periodicity for male sea turtles, operational sex ratios, and implications in the face of climate change
    Graeme C Hays
    Department of Pure and Applied Ecology, Institute of Environmental Sustainability, Swansea University, Singleton Park, Swansea SA2 8PP, UK
    Conserv Biol 24:1636-43. 2010
    ..All species of sea turtles exhibit TSD, many are already endangered, and most already produce sex ratios skewed to the sex produced at ..
  22. ncbi Putting longline bycatch of sea turtles into perspective
    Rebecca L Lewison
    Biology Department, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
    Conserv Biol 21:79-86. 2007
    ..vessels are extremely low, the amount of gear deployed by longline vessels suggests that cumulative bycatch of turtles from older age classes is substantial...
  23. ncbi Decreasing annual nest counts in a globally important loggerhead sea turtle population
    Blair Witherington
    Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, 9700 South A1A, Melbourne Beach, Florida 32951, USA
    Ecol Appl 19:30-54. 2009
    ..We argue that the decline in annual loggerhead nest counts in peninsular Florida can best be explained by a decline in the number of adult female loggerheads in the population. Causes of this decline are explored...
  24. ncbi Bacterial flora and antibiotic resistance from eggs of green turtles Chelonia mydas: an indication of polluted effluents
    Saif Al-Bahry
    Department of Biology, College of Science, Sultan Qaboos University, PO Box 36, PC 123, Al Khodh, Oman
    Mar Pollut Bull 58:720-5. 2009
    Sea turtles migrate to various habitats where they can be exposed to different pollutants. Bacteria were collected from turtle eggs and their resistance to antibiotics was used as pollutant bio-indicators of contaminated effluents...
  25. pmc A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
    Juliana Sterli
    Departamento de Paleontologia, Museo de Historia Natural de San Rafael, Parque Mariano Moreno s n, 5600 San Rafael, Mendoza, Argentina
    Biol Lett 4:286-9. 2008
    b>Turtles have been known since the Upper Triassic (210Myr old); however, fossils recording the first steps of turtle evolution are scarce and often fragmentary...
  26. ncbi Estimating population structure under nonequilibrium conditions in a conservation context: continent-wide population genetics of the giant Amazon river turtle, Podocnemis expansa (Chelonia; Podocnemididae)
    Devon E Pearse
    Department of Integrative Biology, Brigham Young University, Provo, UT 84602, USA
    Mol Ecol 15:985-1006. 2006
    Giant Amazon river turtles, Podocnemis expansa, are indigenous to the Amazon, Orinoco, and Essequibo River basins, and are distributed across nearly the entire width of the South American continent...
  27. ncbi Using telemetry to mitigate the bycatch of long-lived marine vertebrates
    Catherine M McClellan
    Division of Marine Science and Conservation, Duke University Marine Laboratory, Beaufort, North Carolina 28516, USA
    Ecol Appl 19:1660-71. 2009
    ..used a spatially explicit predator-prey model to investigate real-time interactions between three species of sea turtles (Caretta caretta, Chelonia mydas, and Lepidochelys kempii) and the fall large-mesh gill net fishery that targets ..
  28. ncbi Is marine debris ingestion still a problem for the coastal marine biota of southern Brazil?
    Paula S Tourinho
    Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática, Instituto de Oceanografia, Universidade Federal do Rio Grande FURG, C P 474, CEP 96201 900, Rio Grande, RS, Brazil
    Mar Pollut Bull 60:396-401. 2010
    ..This study investigates the current status of marine debris ingestion by sea turtles and seabirds found along the southern Brazilian coast...
  29. ncbi Ingestion of marine debris by loggerhead sea turtles, Caretta caretta, in the Adriatic Sea
    Bojan Lazar
    Department of Biology, Faculty of Science, University of Zagreb, 6 Roosevelt Sq, HR 10000 Zagreb, Croatia
    Mar Pollut Bull 62:43-7. 2011
    We examined the occurrence of marine debris in the gastrointestinal tract of 54 loggerhead sea turtles (Caretta caretta) found stranded or incidentally captured dead by fisheries in the Adriatic Sea, with a curved carapace length of 25...
  30. pmc Using satellite tracking to optimize protection of long-lived marine species: olive ridley sea turtle conservation in Central Africa
    Sara M Maxwell
    Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, California, United States of America
    PLoS ONE 6:e19905. 2011
    ..satellite tracking and a switching state-space model to determine the internesting movements of olive ridley sea turtles (Lepidochelys olivacea) (n = 18) in Central Africa during two breeding seasons (2007-08, 2008-09)...
  31. ncbi Chromosome number and sex determination coevolve in turtles
    Nicole Valenzuela
    Department of Ecology, Evolution and Organismal Biology, Iowa State University, 253 Bessey Hall, Ames Iowa 50011, USA
    Evolution 65:1808-13. 2011
    ..b>Turtles posses diverse chromosome numbers (2N = 28-66) derived from extensive genomic rearrangements, plus varied sex-..
  32. pmc Transsynaptic EphB/Ephrin-B signaling regulates growth of presynaptic boutons required for classical conditioning
    Wei Li
    Neuroscience Group, Division of Basic Biomedical Sciences, University of South Dakota Sanford School of Medicine, Vermillion, South Dakota 57069, USA
    J Neurosci 31:8441-9. 2011
    ..They also reveal a functional interaction between BDNF/TrkB and the Eph/ephrin signaling systems in the coordination of presynaptic and postsynaptic modifications during conditioning...
  33. pmc Movement patterns for a critically endangered species, the leatherback turtle (Dermochelys coriacea), linked to foraging success and population status
    Helen Bailey
    Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, Maryland, United States of America
    PLoS ONE 7:e36401. 2012
    ..We show markedly different patterns for leatherback turtles in the North Atlantic versus Eastern Pacific, which feed on gelatinous zooplankton that are only occasionally ..
  34. pmc Ontogenetic development of migration: Lagrangian drift trajectories suggest a new paradigm for sea turtles
    Graeme C Hays
    Institute of Environmental Sustainability, Swansea University, Singleton Park, Swansea SA2 8PP, UK
    J R Soc Interface 7:1319-27. 2010
    ..Here, we provide evidence for a new paradigm for the determinants of migration destination. As adults, sea turtles show fidelity to their natal nesting areas and then at the end of the breeding season may migrate to distant ..
  35. pmc Enhancing the use of Argos satellite data for home range and long distance migration studies of marine animals
    Xavier Hoenner
    Research Institute for Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia
    PLoS ONE 7:e40713. 2012
    ..We compared home ranges and migratory pathways of seven hawksbill sea turtles (Eretmochelys imbricata) estimated from (a) highly accurate Fastloc GPS data and (b) locations computed using ..
  36. ncbi Kinematics and functional morphology of aquatic feeding in Australian snake-necked turtles (Pleurodira;Chelodina)
    J Van Damme
    Department of Biology, University of Antwerp, Belgium
    J Morphol 233:113-25. 1997
    ..This further promotes the assumption that hydrodynamics constrain evolutive solutions for aquatic feeding...
  37. ncbi Resurrecting extinct interactions with extant substitutes
    Christine J Griffiths
    School of Biological Sciences, University of Bristol, Bristol BS8 1UG, UK
    Curr Biol 21:762-5. 2011
    ..Our results demonstrate that the introduction of these exotic frugivores is aiding the recovery of ebonies. We argue for more reversible rewilding experiments to investigate whether extinct species interactions can be restored...
  38. ncbi Dive and beak movement patterns in leatherback turtles Dermochelys coriacea during internesting intervals in French Guiana
    Sabrina Fossette
    IPHC Département Ecologie, Physiologie, Ethologie, ULP, CNRS, 23 rue Becquerel, 67087 Strasbourg, France
    J Anim Ecol 77:236-46. 2008
    ..Leatherback turtles Dermochelys coriacea (Vandelli 1761), commonly considered as capital breeders, have been reported recently to ..
  39. ncbi Experimental transmission and induction of ranaviral disease in Western Ornate box turtles (Terrapene ornata ornata) and red-eared sliders (Trachemys scripta elegans)
    A J Johnson
    Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
    Vet Pathol 44:285-97. 2007
    ..A pilot study was performed with 3 box turtles (Terrapene ornata ornata) and 3 red-eared sliders (RESs; Trachemys scripta elegans) to assess their suitability ..
  40. ncbi Modeling loggerhead turtle movement in the Mediterranean: importance of body size and oceanography
    Scott A Eckert
    Wider Caribbean Sea Turtle Conservation Network WIDECAST, Nicholas School of the Environment, Earth Sciences Marine Laboratory, Duke University, Beaufort, North Carolina 28516, USA
    Ecol Appl 18:290-308. 2008
    ..hierarchical Bayesian SSMs to estimate movement pathways from Argos satellite-tag data for 15 juvenile loggerhead turtles (Caretta caretta) in the western Mediterranean Sea, and to probabilistically assign locations to one of two ..
  41. pmc The olfactory receptor gene repertoires in secondary-adapted marine vertebrates: evidence for reduction of the functional proportions in cetaceans
    Takushi Kishida
    Department of Zoology, Kyoto University, Wakayama 649 2211, Japan
    Biol Lett 3:428-30. 2007
    ..have lost large amount of their OR genes, whereas secondary-semi-adapted marine vertebrates (sea lions and sea turtles) still have maintained their OR genes, reflecting the importance of terrestrial environment for these animals.
  42. ncbi The evolutionary position of turtles revised
    R Zardoya
    Museo Nacional de Ciencias Naturales, Madrid, Spain
    Naturwissenschaften 88:193-200. 2001
    Consensus on the evolutionary position of turtles within the amniote phylogeny has eluded evolutionary biologists for more than a century...
  43. ncbi Tests of turtle phylogeny: molecular, morphological, and paleontological approaches
    H B Shaffer
    Section of Evolution and Ecology and Center for Populatiion Biology, University of California, Davis, California 95616, USA
    Syst Biol 46:235-68. 1997
    We present phylogenetic analyses of both molecular and morphological data for the 23 major lineages of living turtles and seven key fossil taxa...
  44. ncbi Trade-off between current reproductive effort and delay to next reproduction in the leatherback sea turtle
    Philippe Rivalan
    Laboratoire Ecologie, Systematique et Evolution, UMR 8079, CNRS, ENGREF and Université Paris Sud, Batiment 362, 91405 Orsay Cedex, France
    Oecologia 145:564-74. 2005
    ..These inferences led us to conclude that a trade-off between current and future reproduction exists in leatherbacks nesting in French Guiana, likely linked to the resource provisioning required to invest in reproduction...
  45. ncbi Robust hierarchical state-space models reveal diel variation in travel rates of migrating leatherback turtles
    Ian D Jonsen
    Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada B3H4J1
    J Anim Ecol 75:1046-57. 2006
    ..3. Using the largest Atlantic satellite telemetry data set for critically endangered leatherback turtles, we show that the diel pattern in travel rates of these turtles changes over different phases of their migratory ..
  46. pmc Persistent leatherback turtle migrations present opportunities for conservation
    George L Shillinger
    Hopkins Marine Station, Stanford University, Pacific Grove, California, USA
    PLoS Biol 6:e171. 2008
    ..Populations of leatherback turtles (Dermochelys coriacea) in the eastern Pacific have declined by >90% during the past two decades, primarily due ..
  47. pmc The 'lost years' of green turtles: using stable isotopes to study cryptic lifestages
    Kimberly J Reich
    Archie Carr Center for Sea Turtle Research, Department of Zoology, PO Box 118525, University of Florida, Gainesville, FL 32611, USA
    Biol Lett 3:712-4. 2007
    ..Stable isotopes in scute from young herbivorous green turtles in shallow-water habitats revealed that they spend 3-5 years as carnivores in oceanic habitats before making a ..
  48. ncbi Bridging the gap between community ecology and historical biogeography: niche conservatism and community structure in emydid turtles
    P R Stephens
    Odum School of Ecology, University of Georgia, Athens, GA 30602, USA
    Mol Ecol 18:4664-79. 2009
    ..Our results show how understanding the causes of patterns of historical biogeography may help explain patterns of community structure...
  49. ncbi When surfacers do not dive: multiple significance of extended surface times in marine turtles
    S Hochscheid
    Stazione Zoologica Anton Dohrn, Villa Communale 1, Naples, Italy
    J Exp Biol 213:1328-37. 2010
    Marine turtles spend more than 90% of their life underwater and have been termed surfacers as opposed to divers...
  50. ncbi Contrasting demographic and genetic estimates of dispersal in the endangered Coahuilan box turtle: a contemporary approach to conservation
    Jennifer G Howeth
    Section of Integrative Biology, University of Texas at Austin, 1 University Station C0930, Austin, TX 78712, USA
    Mol Ecol 17:4209-21. 2008
    ..coahuila conveys a sustainable evolutionary trajectory of the species pending preservation of threatened wetland habitats and a range-wide network of corridors...
  51. ncbi Simulating transoceanic migrations of young loggerhead sea turtles: merging magnetic navigation behavior with an ocean circulation model
    Nathan F Putman
    Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
    J Exp Biol 215:1863-70. 2012
    Young loggerhead sea turtles (Caretta caretta) from eastern Florida, USA, undertake a transoceanic migration in which they gradually circle the Sargasso Sea before returning to the North American coast...
  52. pmc Transitional fossils and the origin of turtles
    Tyler R Lyson
    Department of Geology and Geophysics, Yale University, New Haven, CT 06511, USA
    Biol Lett 6:830-3. 2010
    The origin of turtles is one of the most contentious issues in systematics with three currently viable hypotheses: turtles as the extant sister to (i) the crocodile-bird clade, (ii) the lizard-tuatara clade, or (iii) Diapsida (a clade ..
  53. ncbi Prevalence of Salmonella spp in cloacal, fecal, and gastrointestinal mucosal samples from wild North American turtles
    Carley A Saelinger
    School of Veterinary Medicine, University of Pennsylvania, Philadelphia, 19104, USA
    J Am Vet Med Assoc 229:266-8. 2006
    To determine prevalence of Salmonella spp in samples collected from wild North American turtles.
  54. ncbi Living together but remaining apart: Atlantic and Mediterranean loggerhead sea turtles (Caretta caretta) in shared feeding grounds
    Carlos Carreras
    Department of Animal Biology, Faculty of Biology, University of Barcelona, Avda Diagonal 645, E 08028 Barcelona, Spain
    J Hered 102:666-77. 2011
    Juvenile loggerhead sea turtles (Caretta caretta) from Atlantic nesting populations migrate into the western Mediterranean, where they share feeding grounds with turtles originating in the Mediterranean...
  55. ncbi Temperature-dependent sex determination and global change: are some species at greater risk?
    Vincent Hulin
    Laboratoire Ecologie, Systématique et Evolution UMR8079, Faculté des Sciences d Orsay, Universite Paris Sud, Batiment 362, Orsay, France
    Oecologia 160:493-506. 2009
    ..From our analyses, we predict that species with a larger TRT should be more likely to evolve in response to new thermal conditions, thus putting them at lower risk to global change...
  56. ncbi Mixed-stock analysis reveals the migrations of juvenile hawksbill turtles (Eretmochelys imbricata) in the Caribbean Sea
    B W Bowen
    Hawaii Institute of Marine Biology, University of Hawaii, PO Box 1346, Kaneohe, Hawaii 96744, USA
    Mol Ecol 16:49-60. 2007
    Hawksbill turtles (Eretmochelys imbricata) migrate between nesting beaches and feeding habitats that are often associated with tropical reefs, but it is uncertain which nesting colonies supply which feeding habitats...
  57. pmc Megafaunal meiolaniid horned turtles survived until early human settlement in Vanuatu, Southwest Pacific
    Arthur W White
    School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
    Proc Natl Acad Sci U S A 107:15512-6. 2010
    Meiolaniid or horned turtles are members of the extinct Pleistocene megafauna of Australia and the southwest Pacific. The timing and causes of their extinction have remained elusive...
  58. ncbi Myxidium scripta n. sp. identified in urinary and biliary tract of Louisiana-farmed red-eared slider turtles Trachemys scripta elegans
    John F Roberts
    Department of Infectious Disease and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32610, USA
    Dis Aquat Organ 80:199-209. 2008
    ..in the renal tubules in 3 of 6, the gall bladder lumen in 2 of 6, and the bile ductule in 1 of 6 red eared slider turtles Trachemys scripta elegans. In total, myxozoa were identified in 4 of 6 turtles...
  59. pmc Jellyfish support high energy intake of leatherback sea turtles (Dermochelys coriacea): video evidence from animal-borne cameras
    Susan G Heaslip
    Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
    PLoS ONE 7:e33259. 2012
    ..The location of these prey may be predictable at large oceanographic scales, given that leatherback turtles perform long distance migrations (1000s of km) from nesting beaches to high latitude foraging grounds...
  60. ncbi Integration of morphological data sets for phylogenetic analysis of Amniota: the importance of integumentary characters and increased taxonomic sampling
    Robert V Hill
    Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York 11794 8081, USA
    Syst Biol 54:530-47. 2005
    Several mutually exclusive hypotheses have been advanced to explain the phylogenetic position of turtles among amniotes...
  61. ncbi Longitude perception and bicoordinate magnetic maps in sea turtles
    Nathan F Putman
    Department of Biology, University of North Carolina, Chapel Hill, Chapel Hill, NC 27599, USA
    Curr Biol 21:463-6. 2011
    ..Here we report, however, that hatchling loggerhead sea turtles (Caretta caretta) from Florida, USA, when exposed to magnetic fields that exist at two locations with the same ..
  62. ncbi Perception of airborne odors by loggerhead sea turtles
    C S Endres
    Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
    J Exp Biol 212:3823-7. 2009
    Sea turtles are known to detect chemical cues, but in contrast to most marine animals, turtles surface to breathe and thus potentially have access to olfactory cues both in air and in water...
  63. pmc Rapid evolution of Beta-keratin genes contribute to phenotypic differences that distinguish turtles and birds from other reptiles
    Yang I Li
    Department of Physiology, Anatomy and Genetics, MRC Functional Genomics Unit, University of Oxford, United Kingdom
    Genome Biol Evol 5:923-33. 2013
    ..shell at a molecular level, we surveyed the diversity of beta-keratin genes from the genome assemblies of three turtles, Chrysemys picta, Pelodiscus sinensis, and Chelonia mydas, which together represent over 160 Myr of chelonian ..
  64. ncbi Patterns of lipid storage and mobilisation in the female green sea turtle ( Chelonia mydas)
    M Hamann
    School of Biological Sciences, Department of Anatomy and Developmental Biology, The University of Queensland, St Lucia, QLS 4072, Australia
    J Comp Physiol B 172:485-93. 2002
    ....
  65. ncbi Prevalence of Salmonella shedding in faeces by captive chelonians
    P Strohl
    Département de Santé Publique Vétérinaire, Ecole Nationale Veterinaire de Lyon, BP 83, 69280 Marcy l Etoile, France
    Vet Rec 154:56-8. 2004
  66. ncbi Diel foraging behavior of gravid leatherback sea turtles in deep waters of the Caribbean Sea
    JAMES CASEY
    Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 South College Road, Wilmington, NC 28403, USA
    J Exp Biol 213:3961-71. 2010
    It is generally assumed that leatherback turtles (Dermochelys coriacea), like other species of sea turtle, do not feed while offshore from nesting beaches, and rely instead on fat reserves to fuel reproductive activities...
  67. ncbi Kinematics of aquatic and terrestrial prey capture in Terrapene carolina, with implications for the evolution of feeding in cryptodire turtles
    A P Summers
    Department of Biology, University of Massachusetts, Amherst 01003, USA
    J Exp Zool 281:280-7. 1998
    ..In all of these turtles, hyoid depression produced oral cavity expansion during aquatic feeding, but the earthworm prey were never sucked ..
  68. ncbi Fourteen nuclear genes provide phylogenetic resolution for difficult nodes in the turtle tree of life
    Anthony J Barley
    Department of Evolution and Ecology, University of California, Davis, CA 95616, USA
    Mol Phylogenet Evol 55:1189-94. 2010
    ..of molecular methods in attempts at resolving the evolutionary relationships among the major clades of turtles, some nodes in the tree have proved to be extremely problematic and have remained unresolved...
  69. pmc Complexity and variation in loggerhead sea turtle life history
    Catherine M McClellan
    Division of Marine Science and Conservation, Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, NC 28516, USA
    Biol Lett 3:592-4. 2007
    Juvenile loggerhead sea turtles spend more than a decade in the open ocean before returning to neritic waters to mature and reproduce...
  70. ncbi Multifunctional and specialized spinal interneurons for turtle limb movements
    Ari Berkowitz
    Department of Zoology, University of Oklahoma, Norman, Oklahoma, USA
    Ann N Y Acad Sci 1198:119-32. 2010
    ..Future investigations will focus on how multifunctional and specialized spinal interneurons interact to generate each motor output...
  71. ncbi Using open robust design models to estimate temporary emigration from capture-recapture data
    W L Kendall
    USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708, USA
    Biometrics 57:1113-22. 2001
    ..We apply our model to estimate survival and breeding probability in a study of hawksbill sea turtles (Eretmochelys imbricata), where previous approaches are not appropriate.
  72. pmc Modulation of plateau properties in dorsal horn neurones in a slice preparation of the turtle spinal cord
    R E Russo
    Department of Medical Physiology, Panum Institute, University of Copenhagen, Denmark
    J Physiol 499:459-74. 1997
    ..9. We propose that modulation of postsynaptic plateau properties in dorsal horn neurones by activation of type I metabotropic glutamate receptors and NK-1 tachykinin receptors is involved in processing nociceptive information...
  73. ncbi Bottom-up and climatic forcing on the worldwide population of leatherback turtles
    Vincent S Saba
    Department of Fisheries Science, Virginia Institute of Marine Science, College of William and Mary, Rt 1208 Greate Road, Gloucester Point, Virginia 23062, USA
    Ecology 89:1414-27. 2008
    Nesting populations of leatherback turtles (Dermochelys coriacea) in the Atlantic and western Indian Oceans are increasing or stable while those in the Pacific are declining...
  74. ncbi Dating cryptodiran nodes: origin and diversification of the turtle superfamily Testudinoidea
    João M Lourenço
    Institut des Sciences de l Evolution, Universite Montpellier 2, CC064, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France
    Mol Phylogenet Evol 62:496-507. 2012
    The superfamily Testudinoidea is the most diverse and widely distributed clade of extant turtles. Surprisingly, despite an extensive fossil record, and increasing amount of molecular data available, the temporal origin of this group is ..
  75. ncbi Effects of illegal harvest of eggs on the population decline of leatherback turtles in Las Baulas Marine National Park, Costa Rica
    Pilar Santidrian Tomillo
    Department of Bioscience and Biotechnology, Drexel University, Philadelphia, PA 19104, USA
    Conserv Biol 22:1216-24. 2008
    Within 19 years the nesting population of leatherback turtles (Dermochelys coriacea) at Parque Nacional Marino Las Baulas declined from 1500 turtles nesting per year to about 100...
  76. ncbi Leatherback nests increasing significantly in Florida, USA; trends assessed over 30 years using multilevel modeling
    Kelly Stewart
    Duke Center for Marine Conservation, Nicholas School of the Environment, Duke University Marine Lab, 135 Duke Marine Lab Rd, Beaufort, North Carolina 28516, USA
    Ecol Appl 21:263-73. 2011
    ..For sea turtles, changes in abundance are difficult to detect because most life stages occur in the water...
  77. ncbi Evolution of sexual size dimorphisms in emydid turtles: ecological dimorphism, rensch's rule, and sympatric divergence
    Patrick R Stephens
    Odum School of Ecology, 140 E Green St, University of Georgia, Athens, Georgia 30602, USA
    Evolution 63:910-25. 2009
    ..Emydid turtles include species with both male and female-biased SSD, and some emydids exhibit among the most extreme SSD in ..
  78. ncbi Detecting female precise natal philopatry in green turtles using assignment methods
    Patricia L M Lee
    Institute of Environmental Sustainability, Department of Biological Sciences, University of Wales Swansea, Swansea SA2 8PP, UK
    Mol Ecol 16:61-74. 2007
    It is well established that sea turtles return to natal rookeries to mate and lay their eggs, and that individual females are faithful to particular nesting sites within the rookery...
  79. ncbi Behavioral inference of diving metabolic rate in free-ranging leatherback turtles
    Corey J A Bradshaw
    School for Environmental Research, Institute of Advanced Studies, Charles Darwin University, Darwin, Northern Territory 0909, Australia
    Physiol Biochem Zool 80:209-19. 2007
    ..endothermy? Recent measurements have provided the first estimates of field metabolic rate (FMR) in leatherback turtles using doubly labeled water; however, the technique is prohibitively expensive and logistically difficult and ..
  80. ncbi Morphology and function of the feeding apparatus of Pelusios castaneus (Chelonia; Pleurodira)
    P Lemell
    Department of Comparative Anatomy and Morphology, Institute of Zoology, University of Vienna, Austria
    J Morphol 244:127-35. 2000
    ..to point out the major functional and biomechanical distinctions between aquatic and terrestrial feeding turtles as well as several intermediate forms...
  81. ncbi Cloning and expression of aromatase in a turtle with temperature-dependent sex determination
    Chris Murdock
    Department of Biology, University of Alabama at Birmingham, 1300 University Blvd, Birmingham, AL 35294 1170, USA
    Gen Comp Endocrinol 130:109-19. 2003
    ..The current results suggest that the expression of aromatase may not be a pivotal regulatory step in the sex determination cascade of this turtle...
  82. pmc Ontogeny of the alligator cartilago transiliens and its significance for sauropsid jaw muscle evolution
    Henry P Tsai
    Integrative Anatomy, Department of Pathology and Anatomical Sciences, University of Missouri, Columbia, Missouri, United States of America
    PLoS ONE 6:e24935. 2011
    ..Finally, these findings indicate that similar tendon organs exist among potentially homologous muscle groups in birds and turtles, thus impacting inferences of jaw muscle homology and evolution in sauropsids in general.
  83. ncbi Body plan of turtles: an anatomical, developmental and evolutionary perspective
    Hiroshi Nagashima
    Laboratory for Evolutionary Morphology, RIKEN Center for Developmental Biology, 2 2 3 Minatojima minami, Chuo, Kobe, Hyogo, 650 0047, Japan
    Anat Sci Int 87:1-13. 2012
    ..The basic structure of the carapace comprises vertebrae and ribs. The pectoral girdle of turtles sits inside the carapace or the rib cage, in striking contrast to the body plan of other tetrapods...
  84. ncbi Stereological estimate of the total number of neurons in spinal segment D9 of the red-eared turtle
    Solveig Walløe
    Research Laboratory for Stereology and Neuroscience, Bispebjerg Hospital, DK 2400 Copenhagen, Denmark
    J Neurosci 31:2431-5. 2011
    ..These findings also form a crucial quantitative foundation for integrating electrophysiological data into mathematical circuit models...
  85. pmc Long-term climate forcing in loggerhead sea turtle nesting
    Kyle S Van Houtan
    Marine NOAA Fisheries Service, Pacific Islands Fisheries Science Center, Honolulu, Hawaii, United States of America
    PLoS ONE 6:e19043. 2011
    ..Future studies should consider environmental baselines in assessments of marine turtle population variability and persistence...
  86. ncbi Salmonella in free living terrestrial and aquatic turtles
    J Hidalgo-Vila
    Estacion Biologica de Donana, CSIC, Avda Maria Luisa s n, 41013 Sevilla, Spain
    Vet Microbiol 119:311-5. 2007
    Detection of Salmonella in pet turtles has been the focus of extensive research, but its incidence in free living turtles is not well known...
  87. ncbi Deep genealogical lineages in the widely distributed African helmeted terrapin: evidence from mitochondrial and nuclear DNA (Testudines: Pelomedusidae: Pelomedusa subrufa)
    Mario Vargas-Ramírez
    Museum of Zoology Museum für Tierkunde, Senckenberg Dresden, Dresden, Germany
    Mol Phylogenet Evol 56:428-40. 2010
    ..subrufa...
  88. ncbi The diving behaviour of green turtles undertaking oceanic migration to and from Ascension Island: dive durations, dive profiles and depth distribution
    G C Hays
    School of Biological Sciences, University of Wales Swansea, Singleton Park, Swansea SA2 8PP, UK
    J Exp Biol 204:4093-8. 2001
    Satellite telemetry was used to record the submergence duration of green turtles (Chelonia mydas) as they migrated from Ascension Island to Brazil (N=12 individuals) while time/depth recorders (TDRs) were used to examine the depth ..
  89. ncbi Two herpesviruses associated with disease in wild Atlantic loggerhead sea turtles (Caretta caretta)
    Brian A Stacy
    University of Florida, College of Veterinary Medicine, Small Animal Clinical Sciences, P O Box 100126, Gainesville, FL 32610, USA
    Vet Microbiol 126:63-73. 2008
    Herpesviruses are associated with lung-eye-trachea disease and gray patch disease in maricultured green turtles (Chelonia mydas) and with fibropapillomatosis in wild sea turtles of several species...
  90. ncbi Ranavirus-associated morbidity and mortality in a group of captive eastern box turtles (Terrapene carolina carolina)
    Ryan De Voe
    Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina 27606, USA
    J Zoo Wildl Med 35:534-43. 2004
    Seven captive eastern box turtles (Terrapene carolina carolina) from a large collection of North American chelonians in North Carolina became acutely ill in the fall of 2002. Five of the turtles died...
  91. ncbi Swimming for your life: locomotor effort and oxygen consumption during the green turtle (Chelonia mydas) hatchling frenzy
    David T Booth
    The University of Queensland, Physiological Ecology Group, School of Integrative Biology, QLD 4072, Australia
    J Exp Biol 212:50-5. 2009
    ....
  92. pmc Isotope analysis reveals foraging area dichotomy for atlantic leatherback turtles
    Stephane Caut
    Laboratory for Oceanology, MARE Center, B6C Liège University, Sart Tilman, Liege, Belgique
    PLoS ONE 3:e1845. 2008
    ..Atlantic leatherback turtles undertake long migrations across ocean basins from subtropical and tropical nesting beaches to productive frontal ..
  93. ncbi Phylogeography of the green turtle, Chelonia mydas, in the Southwest Indian Ocean
    J Bourjea
    Institut Français de Recherche pour l Exploitation de la Mer Ifremer de La Réunion, Rue Jean Bertho, BP 60, 97 822 Le Port Cedex, Ile de La Réunion, France
    Mol Ecol 16:175-86. 2007
    ..We also found compelling genetic evidence that green turtles nesting at the rookeries of the South Mozambique Channel (SMC) and those nesting in the North Mozambique Channel (..
  94. pmc Timing of organogenesis support basal position of turtles in the amniote tree of life
    Ingmar Werneburg
    Paläontologisches Institut und Museum der Universität Zürich, Zurich, Switzerland
    BMC Evol Biol 9:82. 2009
    The phylogenetic position of turtles is the most disputed aspect in the reconstruction of the land vertebrate tree of life...
  95. pmc Steroid signaling and temperature-dependent sex determination-Reviewing the evidence for early action of estrogen during ovarian determination in turtles
    Mary Ramsey
    Section of Integrative Biology, University of Texas, 2400 Speedway, Austin, TX 78712, United States
    Semin Cell Dev Biol 20:283-92. 2009
    ..Localized estrogen production facilitates ovarian development while inhibiting male-specific gene expression. At male-producing temperatures aromatase is not upregulated, thereby allowing testis development...
  96. ncbi Salmonella species in free-living spur-thighed tortoises (Testudo graeca) in central western Morocco
    J Hidalgo-Vila
    Estacion Biologica de Donana, Consejo Superior de Investigaciones Cientificas, Avenida Maria Luisa s n, Seville, Spain
    Vet Rec 162:218-9. 2008
  97. ncbi Turtle groups or turtle soup: dispersal patterns of hawksbill turtles in the Caribbean
    J M Blumenthal
    Department of Environment, Box 486, Grand Cayman KY1 1106, Cayman Islands
    Mol Ecol 18:4841-53. 2009
    Despite intense interest in conservation of marine turtles, spatial ecology during the oceanic juvenile phase remains relatively unknown...
  98. ncbi Microhabitat selection by sea turtles in a dynamic thermal marine environment
    Gail Schofield
    Department of Environmental and Natural Resources Management, University of Ioannina, G Seferi 2, GR 30100 Agrinio, Greece
    J Anim Ecol 78:14-21. 2009
    ..As the sea warmed in the summer, this selection was no longer evident. 4. As loggerhead turtles are ectothermic, this early season warm-water selection presumably speeds up egg maturation rates before ..
  99. ncbi On the carapacial ridge in turtle embryos: its developmental origin, function and the chelonian body plan
    Hiroshi Nagashima
    Laboratory for Evolutionary Morphology, Center for Developmental Biology, RIKEN, 2 2 3 Minatojima minami, Kobe 650 0047, Japan
    Development 134:2219-26. 2007
    ....
  100. ncbi Conservation implications of complex population structure: lessons from the loggerhead turtle (Caretta caretta)
    B W Bowen
    Hawaii Institute of Marine Biology, University of Hawaii, P O Box 1346, Kaneohe, HI 96744, USA
    Mol Ecol 14:2389-402. 2005
    ..Loggerhead turtles (Caretta caretta) have both traits, providing an instructive case history for wildlife management...
  101. ncbi Testing hypotheses of aging in long-lived painted turtles (Chrysemys picta)
    Justin D Congdon
    Savannah River Ecology Laboratory, Drawer E, Aiken, SC 29802, USA
    Exp Gerontol 38:765-72. 2003
    For 38 of the past 50 years, Painted Turtles were studied on the University of Michigan's E.S. George Reserve in southeastern Michigan...

Research Grants60

  1. The role of the primitive choana in amniote craniofacial morphogenesis
    John Abramyan; Fiscal Year: 2013
    ..Mice have a complete secondary palate, chickens have a natural cleft palate and turtles have primitive palate...
  2. CELLULAR MECHANISMS OF THE VESTIBULAR SYSTEM
    Anna Lysakowski; Fiscal Year: 2013
    ..be done in the turtle posterior crista and will be integrated with morphological studies to be done in rats and turtles. There are three specific aims...
  3. Salmonella polymicrobial interactions
    BRIAN M AHMER; Fiscal Year: 2012
    ..To date, we have determined that Salmonella can detect Aeromonas hydrophila in turtles and Yersinia enterocolitica in mice and pigs...
  4. CELLULAR MECHANISMS OF THE VESTIBULAR SYSTEM
    Jay Goldberg; Fiscal Year: 2009
    ..in the turtle posterior crista and will be integrated with morphological/molecular studies to be done in rats and turtles. We propose to test three specific hypotheses...
  5. PHYSIOLOGICAL MECHANISMS OF VERTEBRATE FREEZE TOLERANCE
    RICHARD LEE JR; Fiscal Year: 1991
    ..Wood frogs (Rana sylvatica) and box turtles (Terrapene carolina) routinely survive the freezing of up to 65% of their total body water...
  6. EVOLUTION OF THE RETICULAR FORMATION
    WILLIAM CRUCE; Fiscal Year: 1990
    ..Previous work in this lab has demonstrated that the reticular formation of reptiles (snakes, lizards, turtles, and crocodiles) is anatomically quite similar to that of mammals, including humans...
  7. MECHANISMS OF FLUID BALANCE IN LOWER VERTEBRATE LUNGS
    ALLAN SMITS; Fiscal Year: 1991
    ..the role of positive intrapulmonary pressure that mechanically massages fluid out of the lung will be tested as a possible edema-preventing mechanism in toads and turtles using a tracer study to quantify rates of lymphatic return.
  8. Modulation of Muscle Activation and Strain in Turtles
    RICHARD BLOB; Fiscal Year: 2001
    ..this objective, this study will extend current electromyographic analyses of limb muscle function in freshwater turtles to correlate hindlimb kinematics with hindlimb muscle length changes (strain), as well as activity patterns (EMG),..
  9. Number Words and Number Concepts
    BARBARA SARNECKA; Fiscal Year: 2009
    ..Study 5 will tell us when children learn that number words refer to a property of sets rather than a property of individuals. For example, green is a property of an individual turtle, but five is a property of a set of turtles.
  10. Biomechanics and Energetics of Turtle Locomotion
    PETER ZANI; Fiscal Year: 2004
    ..The overall goal of this research is to evaluate the mechanics and energetics of terrestrial locomotion in turtles for comparison with other vertebrates...
  11. Development of Retinal Receptive Fields
    NORBERTO GRZYWACZ; Fiscal Year: 2006
    ..2) Turtles will be reared in abnormal light environments to test through extracellular recordings whether receptive fields ..
  12. CELLULAR BASIS OF TUNING IN THE COCHLEA
    JONATHAN ART; Fiscal Year: 2001
    ..Additional experiments will test the plasticity of channel expression by acclimating turtles to different body temperatures over a range of 20oC...
  13. SYMPOSIUM ON ORGANISMS WITH SLOW AGING
    Caleb Finch; Fiscal Year: 2000
    ..Field data for mortality and reproduction are available for certain in long-lived fish, turtles, and birds. The complex biology of long-life spans will be discussed in terms of evolutionary theory...
  14. NEURAL MECHANISMS OF GLOBAL MOTION ANALYSIS
    Philip Ulinski; Fiscal Year: 1992
    ..The proposed research takes advantage of the relative simplicity of the central visual pathways in turtles and a powerful in vitro preparation of turtle visual cortex to provide initial quantitative data on the ..
  15. PLASTICITY OF SPINAL RESPIRATORY SYNAPTIC TRANSMISSION
    Stephen Johnson; Fiscal Year: 1999
    ..Using an in vitro brainstem-spinal cord preparation from adult turtles as an experimental model, electrical stimulation will be applied to the spinal cord (C5) during reversible ..
  16. Correlation Among Retinal Directionally Selective Cells
    NORBERTO GRZYWACZ; Fiscal Year: 2005
    ..Four specific aims will test these hypotheses in directionally selective ganglion cells of turtles and rabbits, since evidence of long-contour binding exists for these cells: 1)This aim will test whether ..
  17. NEURONAL PATHWAYS UNDERLYING IN VITRO MOTOR LEARNING
    Joyce Keifer; Fiscal Year: 2003
    ..retrograde and anterograde tract tracing methods, and to determine the behavioral correlate of the abducens nerve CR by recording EMGs in a reduced preparation and by classical conditioning of the eye-blink reflex in alert turtles.
  18. NEURAL MECHANISMS OF ADAPTIVE BEHAVIOR
    Joyce Keifer; Fiscal Year: 2009
    ..For research focused on the changes to neural function induced by chronic social stress during adolescence, and to direct pharmacotherapy of associated psychiatric disorders. ..
  19. Cerebellar Afferent Integration Studied In Vitro
    Michael Ariel; Fiscal Year: 2007
    ..This in vitro preparation will thereby provide a unique model system for the study of learning and adaptation of motor behaviors. [unreadable] [unreadable]..
  20. PROCESSING OF BILATERAL INPUTS TO VESTIBULAR NUCLEUS
    Michael Ariel; Fiscal Year: 2002
    ..This project analyzes these bilateral inputs to gain an understanding of their role in the natural processing that results in a normal sense of balance or produces the feeling of vertigo during a pathological condition. ..
  21. Coupling & Reconfiguration of Rhythmic Motor Networks
    Stephen Johnson; Fiscal Year: 2007
    ..unreadable] [unreadable] [unreadable]..
  22. PLASTICITY OF SPINAL RESPIRATORY SYNAPTIC TRANSMISSION
    Stephen Johnson; Fiscal Year: 2001
    ..Using an in vitro brainstem-spinal cord preparation from adult turtles as an experimental model, electrical stimulation will be applied to the spinal cord (C5) during reversible ..
  23. ROS Defense Mechanisms in Brain Reoxygenation
    Sarah Milton; Fiscal Year: 2004
    ....
  24. Post-natal neurogenesis in the turtle spinal cord
    RAUL RUSSO; Fiscal Year: 2009
    ..hypothesis of this project proposes that the region surrounding the central canal in the spinal cord of young turtles is an active neurogenic zone in which Stem/Progenitor (S/P) cells proliferate, giving rise to immature neurons ..
  25. Comparative Genomics of Sex Determination in Amniotes
    Turk Rhen; Fiscal Year: 2006
    ..This approach promises to speed the rate of discovery of sex-determining genes in humans, which to date has been slow and haphazard. ..
  26. TRAINING PROGRAM IN NEUROBIOLOGY AND BEHAVIOR
    David Crews; Fiscal Year: 2003
    ..All of the laboratories comply with NIH requirements. ..
  27. EVOLUTION OF BRAIN-BEHAVIOR CONTROLLING MECHANISMS
    David Crews; Fiscal Year: 2009
    ..abstract_text> ..
  28. ENVIRONMENTAL INFLUENCES ON BRAIN PLASTICITY
    David Crews; Fiscal Year: 2002
    ..The final category of experiments is particularly important as it will discern whether the incubation temperature effects are direct or indirect. ..
  29. Epigenetic Influences on Brain and Behavior
    David Crews; Fiscal Year: 2004
    ..Specific Aim III. To establish if the different behavioral profiles exhibited in such animals in adulthood are reflected in different patterns of activity in a network of interconnected limbic nuclei. ..
  30. Development of gene transfer approaches for neuroAIDS
    Yuanan Lu; Fiscal Year: 2006
    ..Overall, the work is expected to result in significant insight into new approaches for treatment of neuroAIDS and other neurologic diseases. ..
  31. Intracellular signaling in anesthetic and hypoxic preconditioning of neurons
    Philip E Bickler; Fiscal Year: 2010
    ..The work will also identify why the aging brain may not be able to benefit from the neuroprotective actions of anesthetics or other preconditioning treatments. ..
  32. Quantifying the Role of Ca2+ in Mechanotransduction
    HAMILTON FARRIS; Fiscal Year: 2005
    ..abstract_text> ..
  33. Mechanical Tuning in Auditory Sensory Hair Bundles
    HAMILTON FARRIS; Fiscal Year: 2004
    ....
  34. Mitochondria and Cerebral ischemia: intracellular signaling
    Miguel Perez Pinzon; Fiscal Year: 2009
    ....
  35. Hypoxia and Consequences: From Molecule to Malady
    Gabriel Haddad; Fiscal Year: 2008
    ..The meeting will bring together experts from a variety of different backgrounds and fields to discuss this important unifying theme. (End of Abstract) [unreadable] [unreadable] [unreadable]..
  36. SENSORY AND MOTOR INTEGRATION IN THE SPINAL CORD
    PAUL S STEIN; Fiscal Year: 2010
    ..There is considerable similarity in the organization of spinal cord in all vertebrates, including humans. Our findings of CPG organization will be of interest to those developing new therapies for spinal-injured humans. ..
  37. MOLECULAR BASIS OF CELL TOLERANCE TO 02 DEPRIVATION
    Gabriel Haddad; Fiscal Year: 2009
    ..g., mammalian) to render them resistant ..
  38. Neuropathology and Pathogenesis of Huntington's Disease
    Anton Reiner; Fiscal Year: 2008
    ..abstract_text> ..
  39. Hypocretin Neurons
    Anthony N van den Pol; Fiscal Year: 2010
    ..Understanding the role of the endogenous opioid in hypocretin cells should also facilitate the understanding and treatment of narcolepsy. ..
  40. Lung Perfusion Heterogeneity and Mechanisms of Edema
    Susan R Hopkins; Fiscal Year: 2010
    ..abstract_text> ..
  41. 'Training in Endocrinology and Neurobiology of Aging'
    Caleb Finch; Fiscal Year: 2007
    ..Opportunities for human studies on aging, including ethnic differences in aging processes, are provided through the Alzheimer Disease Research Center and the Diabetes Research Center. ..
  42. Molecular Epidemiology and Virulence of URTD
    Lori Wendland; Fiscal Year: 2008
    ..abstract_text> ..
  43. DEVELOPMENT OF NEURONAL CIRCUITS FOR SIMPLE BEHAVIORS
    William Kristan; Fiscal Year: 2004
    ....
  44. CYCLICAL HYPOXIA--SUSCEPTIBILITY TO NEURONAL INJURY
    Gabriel Haddad; Fiscal Year: 2003
    ..This work may shed light on mechanisms of a variety of diseases, including OSAH, apnea of infancy, postnatal cardiorespiratory diseases that reduce O2 delivery, myocardial infarcts, and cerebro-vascular accidents and stroke. ..
  45. SYMPOSIUM ON ORGANISMS WITH SLOW AGING
    Caleb Finch; Fiscal Year: 2002
    ..A volunteer poster session will expand the range of organisms on the formal program and support the development of further interests by students and by researchers not so far identified with this new area. ..
  46. DEVELOPMENT OF THE GUSTATORY SYSTEM
    RICHARD NORTHCUTT; Fiscal Year: 2005
    ..To test the hypothesis that retinoic acid acts as a signal to pattern endoderm directly during gastrulation (aim 3), presumptive pharyngeal endoderm will be excised, exposed to retinoic acid, and cultured. ..
  47. Signal processing in the vestibular nuclei
    Michael Rowe; Fiscal Year: 2003
    ....
  48. Electrochemical Analysis of Dopamine Release
    Margaret Rice; Fiscal Year: 2007
    ..Because unregulated H2O2 can lead to oxidative stress, however, the findings may also point to possible targets for therapeutic intervention in these disorders. ..
  49. Imaging the Activity in Cortical Network
    Michal Zochowski; Fiscal Year: 2006
    ....
  50. CRP, inflammation, and neurodegeneration during aging
    Caleb Finch; Fiscal Year: 2006
    ..F1 hybrids will be made with APPswe/ind and the existing systemic huCRPtg (Y1) and with the neuron-specific huCRPtg (when available). The F1 hybrids will be examined for changes in deposits of Abeta-amyloid. ..
  51. Inhibins and Environmental Estrogens in Ovarian Disease
    Louis Guillette; Fiscal Year: 2007
    ..unreadable] [unreadable] [unreadable]..
  52. Cytomegalovirus in the Brain
    Anthony N van den Pol; Fiscal Year: 2010
    ..These experiments will help us understand the mechanisms associated with CMV-induced neurological dysfunction, and how to combat the virus within the brain with minimal complications. ..
  53. Prenatal TCDD and postnatal autoimmune disease
    Steven Holladay; Fiscal Year: 2007
    ..The collective experiments are designed to detect alterations in fetal immune development caused by TCDD that underlie the worsened postnatal (postpubertal) autoimmune disease caused by this chemical. ..
  54. GABA: EXCITATORY TRANSMITTER IN DEVELOPING HYPOTHALAMUS
    Anthony van den Pol; Fiscal Year: 2008
    ..GABA's excitatory actions during development are widespread throughout the brain. Thus, what we learn from our experiments on hypothalamic neurons should have general applicability to other CNS neurons. ..
  55. NPY DEPRESSION OF HIPPOCAMPAL EPILEPSY
    Anthony van den Pol; Fiscal Year: 2002
    ..NPY is potentially of great interest because its primary action in the normal hippocampus appears to be one of depressing hyperexcited neurons, without a substantial effect on normal neurotransmission. ..
  56. Regulation of Dopamine Release by ROS
    Margaret Rice; Fiscal Year: 2004
    ..Consistent with the goals of the R21 program, these data should provide ground-breaking new information about underlying mechanisms in nigrostriatal degeneration. ..
  57. Systems and Integrative Neurobiology Training Grant
    William Kristan; Fiscal Year: 2007
    ..unreadable] [unreadable] [unreadable]..
  58. ApoJ (Clusterin) in Alzheimer's Disease and Aging
    Caleb Finch; Fiscal Year: 2006
    ..In vitro studies with primary glial cultures from wildtype and apoJ-deficient mice will examine mechanisms of apoJ in microglial activation and in the sensitivity of neurons to AB. ..
  59. Annotation of the Mycoplasma alligatoris genome
    Daniel Brown; Fiscal Year: 2002
    ..The ease of PCR-based cloning and the accessibility of bioinformatics software make this an ideal project to engage undergraduate students in innovative biomedical research. ..
  60. Sleep Mechanisms in Children: Role of Metabolism
    Gabriel Haddad; Fiscal Year: 2002
    ..As seen from reviewing the state-of-the-art above, there are major gaps in our knowledge and this application focuses on a number of these gaps. ..