Genomes and Genes
Summary: A group of elongate elasmobranchs. Sharks are mostly marine fish, with certain species large and voracious.
Publications316 found, 100 shown here
- Residency and spatial use by reef sharks of an isolated seamount and its implications for conservationAdam Barnett
Fisheries, Aquaculture and Coasts Centre, Institute for Marine and Antarctic Studies, Hobart, Tasmania, Australia
PLoS ONE 7:e36574. 2012..The protection of sharks at these seamounts should be an integral component of conservation plans...
- Patterns and ecosystem consequences of shark declines in the oceanFrancesco Ferretti
Biology Department, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia B3H4J1, Canada
Ecol Lett 13:1055-71. 2010..Large sharks in particular have experienced rapid declines over the last decades...
- Cascading effects of the loss of apex predatory sharks from a coastal oceanRansom A Myers
Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4J1, Canada
Science 315:1846-50. 2007..As abundances of all 11 great sharks that consume other elasmobranchs (rays, skates, and small sharks) fell over the past 35 years, 12 of 14 of these ..
- Predicting ecological consequences of marine top predator declinesMichael R Heithaus
Department of Biological Sciences, Florida International University, North Miami, FL 33181, USA
Trends Ecol Evol 23:202-10. 2008..We conclude that marine predators should be managed for the maintenance of both density- and risk-driven ecological processes, and not demographic persistence alone...
- Collapse and conservation of shark populations in the Northwest AtlanticJulia K Baum
Department of Biology, Dalhousie University, Halifax, NS, Canada B3H 4J1
Science 299:389-92. 2003..Scalloped hammerhead, white, and thresher sharks are each estimated to have declined by over 75% in the past 15 years...
- Transoceanic migration, spatial dynamics, and population linkages of white sharksRamón Bonfil
Wildlife Conservation Society, 2300 Southern Boulevard, Bronx, NY 10460, USA
Science 310:100-3. 2005..electronic tag and photographic identification data showing a complex suite of behavioral patterns in white sharks. These include coastal return migrations and the fastest known transoceanic return migration among swimming fauna, ..
- Opportunistic visitors: long-term behavioural response of bull sharks to food provisioning in FijiJuerg M Brunnschweiler
Independent Researcher, Zurich, Switzerland
PLoS ONE 8:e58522. 2013..n = 48 individuals) and acoustic tracking data (n = 82 transmitters; array of up to 16 receivers) of bull sharks Carcharhinus leucas from a long-term shark feeding site at the Shark Reef Marine Reserve and reefs along the Beqa ..
- A review of the biology, fisheries and conservation of the whale shark Rhincodon typusD Rowat
Marine Conservation Society Seychelles, P O Box 1299, Victoria, MAHE, Seychelles
J Fish Biol 80:1019-56. 2012..Notwithstanding these advances, there remain notable gaps in the knowledge of this species particularly with respect to the life history of neonates and adults who are not found in the feeding aggregations...
- Transequatorial migrations by basking sharks in the western Atlantic OceanGregory B Skomal
Massachusetts Division of Marine Fisheries, Oak Bluffs, MA 02557, USA
Curr Biol 19:1019-22. 2009..Previous satellite archival tagging in the North Atlantic has shown that basking sharks move seasonally, are often associated with productive frontal zones, and may make occasional dives to mesopelagic ..
- Reef sharks exhibit site-fidelity and higher relative abundance in marine reserves on the Mesoamerican Barrier ReefMark E Bond
School of Marine and Atmospheric Sciences, SUNY Stony Brook, Stony Brook, New York, United States of America
PLoS ONE 7:e32983. 2012Carcharhinid sharks can make up a large fraction of the top predators inhabiting tropical marine ecosystems and have declined in many regions due to intense fishing pressure...
- Loss of large predatory sharks from the Mediterranean SeaFrancesco Ferretti
Department of Biology, Life Sciences Centre, 1355 Oxford Street, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada
Conserv Biol 22:952-64. 2008..dating back to the early 19th and mid 20th century to reconstruct long-term population trends of large predatory sharks in the northwestern Mediterranean Sea...
- A comparison of the seasonal movements of tiger sharks and green turtles provides insight into their predator-prey relationshipRichard Fitzpatrick
School of Marine and Tropical Biology, James Cook University, Cairns, Queensland, Australia
PLoS ONE 7:e51927. 2012..At Raine Island (Australia), the highest density green turtle Chelonia mydas rookery in the world, tiger sharks Galeocerdo cuvier have been observed to feed on green turtles, and it has been suggested that they may specialise ..
- Feeding anatomy, filter-feeding rate, and diet of whale sharks Rhincodon typus during surface ram filter feeding off the Yucatan Peninsula, MexicoPhilip J Motta
Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, USA
Zoology (Jena) 113:199-212. 2010..During surface ram filter feeding, sharks swam at an average velocity of 1.1m/s with 85% of the open mouth below the water's surface...
- Relative abundance and size of coastal sharks derived from commercial shark longline catch and effort dataJ K Carlson
NOAA Fisheries Service, Southeast Fisheries Science Center, 3500 Delwood Beach Drive, Panama City, FL 32408, USA
J Fish Biol 80:1749-64. 2012In the north-west Atlantic Ocean, stock assessments conducted for some commercially harvested coastal sharks indicate declines from 64 to 80% with respect to virgin population levels...
- Using stable isotope analysis to understand the migration and trophic ecology of northeastern Pacific white sharks (Carcharodon carcharias)Aaron B Carlisle
Hopkins Marine Station of Stanford University, Pacific Grove, California, United States of America
PLoS ONE 7:e30492. 2012..Electronic tagging has demonstrated that white sharks exhibit a regular migratory pattern, occurring at coastal sites during the late summer, autumn and early winter ..
- An unprecedented aggregation of whale sharks, Rhincodon typus, in Mexican coastal waters of the Caribbean SeaRafael de la Parra Venegas
Proyecto Dominó, Comisión Nacional de Áreas Naturales Protegidas, Cancun, Quintana Roo, Mexico
PLoS ONE 6:e18994. 2011Whale sharks, Rhincodon typus, are often perceived as solitary behemoths that live and feed in the open ocean. To the contrary, evidence is accumulating that they are gregarious and form seasonal aggregations in some coastal waters...
- A comparison of spatial and movement patterns between sympatric predators: bull sharks (Carcharhinus leucas) and Atlantic tarpon (Megalops atlanticus)Neil Hammerschlag
Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA
PLoS ONE 7:e45958. 2012..Thus, improved understanding of predator movements is important for evaluating the potential ecosystem effects of their declines...
- Migration pathways, behavioural thermoregulation and overwintering grounds of blue sharks in the Northwest AtlanticSteven E Campana
Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, Nova Scotia, Canada
PLoS ONE 6:e16854. 2011..Although recaptures of tagged sharks have shown that the species is highly migratory, migration pathways towards the overwintering grounds remain ..
- Residency, habitat use and sexual segregation of white sharks, Carcharodon carcharias in False Bay, South AfricaAlison Kock
Department of Zoology, University of Cape Town, Cape Town, South Africa
PLoS ONE 8:e55048. 2013White sharks (Carcharodon carcharias) are threatened apex predators and identification of their critical habitats and how these are used are essential to ensuring improved local and ultimately global white shark protection...
- A first estimate of white shark, Carcharodon carcharias, abundance off Central CaliforniaTaylor K Chapple
Wildlife, Fish and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616, USA
Biol Lett 7:581-3. 2011The decline of sharks in the global oceans underscores the need for careful assessment and monitoring of remaining populations...
- Ongoing collapse of coral-reef shark populationsWilliam D Robbins
School of Marine and Tropical Biology, James Cook University, Townsville, Queensland 4811, Australia
Curr Biol 16:2314-9. 2006..On coral reefs, sharks are strongly interacting apex predators and play a key role in maintaining healthy reef ecosystems...
- Large-scale absence of sharks on reefs in the greater-Caribbean: a footprint of human pressuresChristine A Ward-Paige
Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
PLoS ONE 5:e11968. 2010..pelagic and coastal shark populations have declined dramatically with increased fishing; however, the status of sharks in other systems such as coral reefs remains largely unassessed despite a long history of exploitation...
- Habitat use and movement patterns of bull sharks Carcharhinus leucas determined using pop-up satellite archival tagsJ K Carlson
NOAA, National Marine Fisheries Service, Southeast Fisheries Science Center, 3500 Delwood Beach Road, Panama City, FL 32408, USA
J Fish Biol 77:661-75. 2010Habitat use, movement and residency of bull sharks Carcharhinus leucas were determined using satellite pop-up archival transmitting (PAT) tags throughout coastal areas in the U.S., Gulf of Mexico and waters off the south-east U.S...
- Contrasting patterns of individual specialization and trophic coupling in two marine apex predatorsPhilip Matich
Marine Sciences Program, Florida International University, 3000 NE 151st, North Miami, FL 33181, USA
J Anim Ecol 80:294-305. 2011..turnover rates were used to quantify patterns of individual specialization in two species of 'generalist' sharks (bull sharks, Carcharhinus leucas, and tiger sharks, Galeocerdo cuvier). 4...
- Hormonal control of luminescence from lantern shark (Etmopterus spinax) photophoresJulien M Claes
Catholic University of Louvain, Louvain la Neuve, Belgium
J Exp Biol 212:3684-92. 2009..spinax. This clearly highlights the diversity of fish luminescence and confirms its multiple independent apparitions during the course of evolution...
- Environmental influences on patterns of vertical movement and site fidelity of grey reef sharks (Carcharhinus amblyrhynchos) at aggregation sitesGabriel M S Vianna
Australian Institute of Marine Science, Perth, Western Australia, Australia
PLoS ONE 8:e60331. 2013We used acoustic telemetry to describe the patterns of vertical movement, site fidelity and residency of grey reef sharks (Carcharhinus amblyrhynchos) on the outer slope of coral reefs in Palau, Micronesia, over a period of two years and ..
- Phylogeny of sharks of the family Triakidae (Carcharhiniformes) and its implications for the evolution of carcharhiniform placental viviparityJ Andrés López
Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA
Mol Phylogenet Evol 40:50-60. 2006..aplacental species). The phylogenetic framework presented here is used to infer key events in the evolution and loss of placental viviparity among carcharhiniform sharks.
- Microspectrophotometric evidence for cone monochromacy in sharksNathan Scott Hart
School of Animal Biology, The University of Western Australia, Crawley, WA 6009, Australia
Naturwissenschaften 98:193-201. 2011b>Sharks are apex predators, and their evolutionary success is in part due to an impressive array of sensory systems, including vision. The eyes of sharks are well developed and function over a wide range of light levels...
- Seasonal and long-term changes in relative abundance of bull sharks from a tourist shark feeding site in FijiJuerg M Brunnschweiler
ETH Zurich, Zurich, Switzerland
PLoS ONE 6:e16597. 2011..because of major concerns originating from the need of tour operators to use bait or chum to reliably attract sharks. We used direct underwater sampling to document changes in bull shark Carcharhinus leucas relative abundance at ..
- The use and abuse of photographic identification in sharks and raysA D Marshall
Manta Ray and Whale Shark Research Centre, Marine Megafauna Association, Tofo Beach, Inhambane, Mozambique
J Fish Biol 80:1361-79. 2012..Here the first detailed review of photo-identification as a research technique for sharks and rays is provided, and its assumptions, current applications and potential highlighted...
- Ontogenetic and among-individual variation in foraging strategies of northeast Pacific white sharks based on stable isotope analysisSora L Kim
Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, California, USA
PLoS ONE 7:e45068. 2012..most importantly related to trophic level), as well as differences in baseline values among the regions in which sharks forage, and both prey and habitat preferences may shift with age...
- Low genetic differentiation across three major ocean populations of the whale shark, Rhincodon typusJennifer V Schmidt
The Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, United States of America
PLoS ONE 4:e4988. 2009Whale sharks are a declining species for which little biological data is available. While these animals are protected in many parts of their range, they are fished legally and illegally in some countries...
- Unusually high levels of n-6 polyunsaturated fatty acids in whale sharks and reef manta raysL I E Couturier
School of Biomedical Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
Lipids 48:1029-34. 2013..Whale sharks and reef manta rays are regularly observed feeding on surface aggregations of coastal crustacean zooplankton ..
- The hydrodynamic function of shark skin and two biomimetic applicationsJohannes Oeffner
Museum of Comparative Zoology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA
J Exp Biol 215:785-95. 2012..Shark skin denticles might thus enhance thrust, as well as reduce drag...
- Morphometric and ultrastructural comparison of the olfactory system in elasmobranchs: the significance of structure-function relationships based on phylogeny and ecologyVera Schluessel
School of Biomedical Sciences, University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
J Morphol 269:1365-86. 2008..Statistical analyses using generalized least squares phylogenetic regression revealed that bentho-pelagic sharks and rays possess significantly more olfactory lamellae and larger sensory epithelial surface areas than benthic ..
- Ontogeny of photophore pattern in the velvet belly lantern shark, Etmopterus spinaxJulien M Claes
Catholic University of Louvain, Laboratory of Marine Biology, Place Croix du Sud, Kellner Building, B 1348, Louvain la Neuve, Belgium
Zoology (Jena) 112:433-41. 2009..it was shown by luminescence modelling and confirmed by direct observations of spontaneous luminescence in living sharks. This heterogeneity certainly represents a trade-off between an efficient ventral camouflage and a strong ..
- Deep-diving behaviour of a whale shark Rhincodon typus during long-distance movement in the western Indian OceanJ M Brunnschweiler
Institute of Zoology, University of Zurich, Winterthurerstrasse 190, Zurich, Switzerland
J Fish Biol 74:706-14. 2009..Dives to depths well into the mesopelagic and bathypelagic zones (1286 m maximum depth) were recorded in a bathymetrically non-constraining habitat. The water temperature range recorded during the fish's movement was 3.4-29.9 degrees C...
- Testing morphologically based phylogenetic theories within the cartilaginous fishes with molecular data, with special reference to the catshark family (Chondrichthyes; Scyliorhinidae) and the interrelationships within themBrett A Human
Division of Chemical Pathology, Department of Clinical Laboratory Sciences, University of Cape Town, Observatory 7925, South Africa
Mol Phylogenet Evol 39:384-91. 2006..The placement of the skates and rays in these analyses support the Batoidea as being sister to the Elasmobranchii...
- Global population structure of the spiny dogfish Squalus acanthias, a temperate shark with an antitropical distributionA Verissimo
Virginia Institute of Marine Science, College of William and Mary, P O Box 1346, Gloucester Point, VA 23062, USA
Mol Ecol 19:1651-62. 2010..Finally, the available data strongly argue for the taxonomic separation of the North Pacific spiny dogfish from S. acanthias and a re-evaluation of the specific status of S. acanthias is warranted...
- Inferred global connectivity of whale shark Rhincodon typus populationsA M M Sequeira
The Environment Institute and School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, SA, Australia
J Fish Biol 82:367-89. 2013..This will assist endeavours to predict the longer-term response of the species to ocean warming and changing patterns of human-induced mortality...
- Direct genetic evidence for reproductive philopatry and associated fine-scale migrations in female blacktip reef sharks (Carcharhinus melanopterus) in French PolynesiaJohann Mourier
Laboratoire d Excellence CORAIL, USR 3278 CNRS EPHE, CRIOBE, BP 1013, 98729, Moorea, French Polynesia
Mol Ecol 22:201-14. 2013..There have been some attempts to investigate breeding patterns of reef sharks from litter reconstruction using molecular analyses...
- Population trends in Pacific Oceanic sharks and the utility of regulations on shark finningShelley C Clarke
Oceanic Fisheries Program, Secretariat of Pacific Community, B P D5, 98848, Noumea Cedex, New Caledonia
Conserv Biol 27:197-209. 2013..management of shark resources, we analyzed a long-term record of species-specific catches, sizes, and sexes of sharks collected by onboard observers in the western and central Pacific Ocean from 1995 to 2010...
- A genetic assessment of polyandry and breeding-site fidelity in lemon sharksJoseph D DiBattista
Redpath Museum and Department of Biology, McGill University, 859 Sherbrooke Street West, Montreal, Quebec, Canada
Mol Ecol 17:3337-51. 2008..Four hundred and eight juvenile or subadult sharks were genotyped over eight complete breeding seasons...
- Survey sequencing and comparative analysis of the elephant shark (Callorhinchus milii) genomeByrappa Venkatesh
Institute of Molecular and Cell Biology, Singapore
PLoS Biol 5:e101. 2007Owing to their phylogenetic position, cartilaginous fishes (sharks, rays, skates, and chimaeras) provide a critical reference for our understanding of vertebrate genome evolution...
- Global estimates of shark catches using trade records from commercial marketsShelley C Clarke
Joint Institute for Marine and Atmospheric Research, University of Hawaii and National Research Institute of Far Seas Fisheries, 5 7 1 Shimizu Orido, Shizuoka 424 8633, Japan
Ecol Lett 9:1115-26. 2006Despite growing concerns about overexploitation of sharks, lack of accurate, species-specific harvest data often hampers quantitative stock assessment...
- The extent of population genetic subdivision differs among four co-distributed shark species in the Indo-Australian archipelagoJenny R Ovenden
Molecular Fisheries Laboratory, Department of Primary Industries and Fisheries, Queensland Government, Queensland, Australia
BMC Evol Biol 9:40. 2009..Both countries exploit a variety of fisheries species, including whaler (Carcharhinus spp.) and hammerhead sharks (Sphyrna spp.)...
- Expanded niche for white sharksAndre M Boustany
Tuna Research and Conservation Center, Stanford University and Monterey Bay Aquarium, Hopkins Marine Station, Pacific Grove, California 93950, USA
Nature 415:35-6. 2002..the inherent difficulty of studying swift and powerful marine animals made ecological information about sharks of the family Lamnidae difficult to obtain...
- Sexual segregation of pelagic sharks and the potential threat from fisheriesGonzalo R Mucientes
Instituto de Investigaciones Marinas, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain
Biol Lett 5:156-9. 2009Large pelagic sharks are declining in abundance in many oceans owing to fisheries exploitation...
- Worldwide phylogeography of the blacktip shark (Carcharhinus limbatus) inferred from mitochondrial DNA reveals isolation of western Atlantic populations coupled with recent Pacific dispersalD B Keeney
Fisheries and Illinois Aquaculture Center, Department of Zoology, Southern Illinois University Carbondale, Carbondale, IL 62901 6511, USA
Mol Ecol 15:3669-79. 2006..In this study, we examined the genetic relationships of blacktip shark populations (n = 364 sharks) throughout the majority of the species' range using the entire mitochondrial control region (1067-1070 ..
- Evidence for reproductive philopatry in the bull shark Carcharhinus leucasB J Tillett
Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT 0810, Australia
J Fish Biol 80:2140-58. 2012Reproductive philopatry in bull sharks Carcharhinus leucas was investigated by comparing mitochondrial (NADH dehydrogenase subunit 4, 797 base pairs and control region genes 837 base pairs) and nuclear (three microsatellite loci) DNA of ..
- Isotopic incorporation rates for shark tissues from a long-term captive feeding studySora Lee Kim
Department of Earth and Planetary Sciences, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
J Exp Biol 215:2495-500. 2012..We report the incorporation of carbon and nitrogen into the tissues of leopard sharks (Triakis semifasciata)...
- Evidence that mechanisms of fin development evolved in the midline of early vertebratesRenata Freitas
Department of Zoology, University of Florida, PO Box 118525, Gainesville, Florida 32611, USA
Nature 442:1033-7. 2006....
- White sharks (Carcharodon carcharias) scavenging on whales and its potential role in further shaping the ecology of an apex predatorChris Fallows
Apex Expeditions, Cape Town, South Africa
PLoS ONE 8:e60797. 2013..Here we present findings from multiple opportunistic observations of white sharks scavenging on whale carcasses in False Bay, South Africa...
- Function of the heterocercal tail in sharks: quantitative wake dynamics during steady horizontal swimming and vertical maneuveringC D Wilga
Department of Biological Sciences, University of Rhode Island, 100 Flagg Road, Kingston, RI 02881, USA
J Exp Biol 205:2365-74. 2002The function of the heterocercal tail in sharks has long been debated in the literature...
- Re-creating missing population baselines for Pacific reef sharksMarc O Nadon
Joint Institute for Marine and Atmospheric Research, University of Hawaii, 1000 Pope Road, Honolulu, HI 96822, USA
Conserv Biol 26:493-503. 2012b>Sharks and other large predators are scarce on most coral reefs, but studies of their historical ecology provide qualitative evidence that predators were once numerous in these ecosystems...
- A review of the application of molecular genetics for fisheries management and conservation of sharks and raysC L Dudgeon
The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
J Fish Biol 80:1789-843. 2012..Where possible, examples from the Indo-Pacific region, which has been underrepresented in previous reviews, are emphasized within a global perspective...
- Global diversity hotspots and conservation priorities for sharksLuis O Lucifora
Consejo Nacional de Investigaciones Cientificas y Tecnicas, Centro de Investigaciones Ecológicas Subtropicales, Centro de Investigaciones del Bosque Atlántico, Puerto Iguazú, Misiones, Argentina
PLoS ONE 6:e19356. 2011b>Sharks are one of the most threatened groups of marine animals, as high exploitation rates coupled with low resilience to fishing pressure have resulted in population declines worldwide...
- Molecular phylogeny and node time estimation of bioluminescent Lantern Sharks (Elasmobranchii: Etmopteridae)Nicolas Straube
Zoologische Staatssammlung München, Sektion Ichthyologie, Münchhausenstrasse 21, 81247 München, Germany
Mol Phylogenet Evol 56:905-17. 2010Deep-sea Lantern Sharks (Etmopteridae) represent the most speciose family within Dogfish Sharks (Squaliformes)...
- Seasonal and ontogenetic changes in movement patterns of sixgill sharksKelly S Andrews
Northwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Seattle, Washington, United States of America
PLoS ONE 5:e12549. 2010..It is of particular interest to understand the patterns of movement for species which are susceptible to human activities (e.g. fishing), or that exert a large influence on community structure, such as sharks.
- Shark tales: a molecular species-level phylogeny of sharks (Selachimorpha, Chondrichthyes)Ximena Velez-Zuazo
Department of Biology, University of Puerto Rico Rio Piedras UPRRP, San Juan, PR 00931 3360, PR, USA
Mol Phylogenet Evol 58:207-17. 2011b>Sharks are a diverse and ecologically important group, including some of the ocean's largest predatory animals. Sharks are also commercially important, with many species suffering overexploitation and facing extinction...
- Gauging the threat: the first population estimate for white sharks in South Africa using photo identification and automated softwareAlison V Towner
Dyer Island Conservation Trust, Great White House, Kleinbaai, Gansbaai, South Africa
PLoS ONE 8:e66035. 2013South Africa is reputed to host the world's largest remaining population of white sharks, yet no studies have accurately determined a population estimate based on mark-recapture of live individuals...
- Functional morphology of the pectoral fins in bamboo sharks, Chiloscyllium plagiosum: benthic vs. pelagic station-holdingC D Wilga
Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881 0816, USA
J Morphol 249:195-209. 2001Bamboo sharks (Chiloscyllium plagiosum) are primarily benthic and use their relatively flexible pectoral and pelvic fins to rest on and move about the substrate...
- Mineralized cartilage in the skeleton of chondrichthyan fishesMason N Dean
Ecology and Evolutionary Biology, University of California Irvine, 321 Steinhaus Hall, Irvine, CA 92697 2525, USA
Zoology (Jena) 109:164-8. 2006The cartilaginous endoskeleton of chondrichthyan fishes (sharks, rays, and chimaeras) exhibits complex arrangements and morphologies of calcified tissues that vary with age, species, feeding behavior, and location in the body...
- Global phylogeography with mixed-marker analysis reveals male-mediated dispersal in the endangered scalloped hammerhead shark (Sphyrna lewini)Toby S Daly-Engel
Department of Zoology, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
PLoS ONE 7:e29986. 2012..A previous survey of maternal (mtDNA) markers demonstrated strong genetic partitioning overall (global Φ(ST) = 0.749) and significant population separations across oceans and between discontinuous continental coastlines...
- Evaluating the performance of methods for estimating the abundance of rapidly declining coastal shark populationsDouglas J McCauley
Hopkins Marine Station, Stanford University, Pacific Grove, California 93950, USA
Ecol Appl 22:385-92. 2012..trials and computer simulations to critically examine the operation of four common methods for counting coastal sharks: stationary point counts, belt transects, video surveys, and mark and recapture abundance estimators...
- Widespread utility of highly informative AFLP molecular markers across divergent shark speciesKyall R Zenger
Reprogen, Faculty of Veterinary Science, University of Sydney, Camden, NSW, Australia
J Hered 97:607-11. 2006..Data collection that relies on direct observation can be logistically challenging with sharks. Consequently, molecular methods are becoming increasingly important to obtain knowledge that is critical for ..
- Selection and characterization of naturally occurring single-domain (IgNAR) antibody fragments from immunized sharks by phage displayHelen Dooley
Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, Scotland, UK
Mol Immunol 40:25-33. 2003..Selection of such a library generated from nurse sharks (Ginglymostoma cirratum) immunized with the model antigen hen egg-white lysozyme (HEL) enabled the successful ..
- Oceans apart? Short-term movements and behaviour of adult bull sharks Carcharhinus leucas in Atlantic and Pacific Oceans determined from pop-off satellite archival taggingJ M Brunnschweiler
ETH Zurich, Raemistrasse 101, CH 8092 Zurich, Switzerland
J Fish Biol 77:1343-58. 2010Adult bull sharks Carcharhinus leucas were monitored with electronic tags to investigate horizontal and vertical movements in the Atlantic and Pacific Oceans. In both locations, C...
- Mutagenic mapping of the Na-K-Cl cotransporter for domains involved in ion transport and bumetanide bindingP Isenring
Department of Cellular and Molecular Physiology, Yale University, New Haven, Connecticut 06510, USA
J Gen Physiol 112:549-58. 1998..Unlike for the ions, changes in bumetanide affinity were nonlinear and difficult to interpret: the Ki(bumetanide) of a number of the constructs was outside the range of sNKCC1 and hNKCC1 Kis...
- The status of chondrichthyan conservation in the Indo-Australasian regionW T White
CSIRO Marine and Atmospheric Research, G P O Box 1538, Hobart, Tasmania 7001, Australia
J Fish Biol 76:2090-117. 2010The status of chondrichthyan (sharks, batoids and chimaeras) conservation in the Indo-Australasian region is examined, and issues relevant to the conservation of this fauna at the subregional level [Australia, Indonesia (excluding West ..
- World phylogeography and male-mediated gene flow in the sandbar shark, Carcharhinus plumbeusDavid S Portnoy
Department of Wildlife and Fisheries, Texas A and M University, TAMU 2258, College Station, TX 77843 2258, USA
Mol Ecol 19:1994-2010. 2010..Collectively, these data suggest complex spatial/temporal relationships between shark populations that may feature pulses of female dispersal and more continuous male-mediated gene flow...
- Incidence of organochlorine pesticides in muscle and liver tissues of South African great white sharks Carcharodon carchariasDaniel Schlenk
Department of Environmental Sciences, Science Lab 1, University of California Riverside, Riverside, CA 92521, USA
Mar Pollut Bull 50:208-11. 2005
- Into the blue: gene duplication and loss underlie color vision adaptations in a deep-sea chimaera, the elephant shark Callorhinchus miliiWayne L Davies
UCL Institute of Ophthalmology, London EC1V 9EL, United Kingdom
Genome Res 19:415-26. 2009..Our findings have important implications for the present knowledge of color vision evolution in early vertebrates...
- Postprandial response of gastric pH in leopard sharks (Triakis semifasciata) and its use to study foraging ecologyYannis P Papastamatiou
Department of Biological Sciences, California State University Long Beach, 1250 Bellflower Blvd, Long Beach, CA 90840, USA
J Exp Biol 207:225-32. 2004Changes in gastric pH of leopard sharks Triakis semifasciata were quantified as an indicator of feeding frequency and ration size...
- Long-term natal site-fidelity by immature lemon sharks (Negaprion brevirostris) at a subtropical islandDemian D Chapman
Institute for Ocean Conservation Science and School of Marine and Atmospheric Science, Stony Brook University, Stony Brook, NY 11794, USA
Mol Ecol 18:3500-7. 2009Although many sharks begin their life confined in nursery habitats, it is unknown how rapidly they disperse away from their natal area once they leave the nursery...
- The first cytokine sequence within cartilaginous fish: IL-1 beta in the small spotted catshark (Scyliorhinus canicula)Steve Bird
Department of Zoology, University of Aberdeen, Aberdeen, United Kingdom
J Immunol 168:3329-40. 2002..The cloning of IL-1beta in S. canicula, the first cytokine sequenced within cartilaginous fish, verifies previous bioactivity evidence for the presence of inflammatory cytokines...
- Low worldwide genetic diversity in the basking shark (Cetorhinus maximus)A Rus Hoelzel
School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH13LE, UK
Biol Lett 2:639-42. 2006..We provide evidence for a bottleneck event within the Holocene, estimate an effective population size (Ne) that is low for a globally distributed species, and discuss the implications...
- Development of the cerebellar body in sharks: spatiotemporal relations of Pax6 expression, cell proliferation and differentiationIsabel Rodríguez-Moldes
Department of Cell Biology and Ecology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
Neurosci Lett 432:105-10. 2008..Our results reveal that a transient secondary matrix zone, the external germinal layer, is formed in sharks at early stages of cerebellar development and is the source of the earliest Pax6-expressing (granule) cells...
- Global phylogeography and seascape genetics of the lemon sharks (genus Negaprion)J K Schultz
Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Kaneohe, HI 96744, USA
Mol Ecol 17:5336-48. 2008..role of coastal habitat preference and philopatry in shaping the distribution and population structure of lemon sharks. The genus Negaprion comprises the amphiatlantic lemon shark (N...
- Electroreception in juvenile scalloped hammerhead and sandbar sharksStephen M Kajiura
Department of Zoology and Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Kaneohe, HI 96744, USA
J Exp Biol 205:3609-21. 2002The unique head morphology of sphyrnid sharks might have evolved to enhance electrosensory capabilities...
- Biomass, size, and trophic status of top predators in the Pacific OceanJohn Sibert
Joint Institute for Marine and Atmospheric Research, University of Hawaii, Honolulu, HI 96822, USA
Science 314:1773-6. 2006..These results indicate substantial, though not catastrophic, impacts of fisheries on these top-level predators and minor impacts on the ecosystem in the Pacific Ocean...
- Satellite tagging and cardiac physiology reveal niche expansion in salmon sharksKevin C Weng
Tuna Research and Conservation Center, Stanford University, Hopkins Marine Station, 120 Oceanview Boulevard, Pacific Grove, CA 93950, USA
Science 310:104-6. 2005..We used a satellite tag attached to the dorsal fin to track salmon sharks (Lamna ditropis) for up to 3.2 years...
- Large-scale movement and reef fidelity of grey reef sharksMichelle R Heupel
School of Earth and Environmental Sciences, James Cook University, Townsville, Queensland, Australia
PLoS ONE 5:e9650. 2010Despite an Indo-Pacific wide distribution, the movement patterns of grey reef sharks (Carcharhinus amblyrhynchos) and fidelity to individual reef platforms has gone largely unstudied...
- Use of isotopic analysis of vertebrae in reconstructing ontogenetic feeding ecology in white sharksJames A Estrada
Department of Biological Sciences, University of New England, Biddeford, Maine 04004, USA
Ecology 87:829-34. 2006....
- Microsatellite and mitochondrial DNA analyses of the genetic structure of blacktip shark (Carcharhinus limbatus) nurseries in the northwestern Atlantic, Gulf of Mexico, and Caribbean SeaD B Keeney
Fisheries and Illinois Aquaculture Center, Department of Zoology, Life Sciences II, Southern Illinois University Carbondale, 1125 Lincoln Drive, Carbondale, IL 62901 6511, USA
Mol Ecol 14:1911-23. 2005..DNA control region sequences and eight nuclear microsatellite loci scored in neonate and young-of-the-year sharks. Significant structure was detected with both markers among nine nurseries (mitochondrial PhiST = 0.350, P < 0...
- State-dependent risk-taking by green sea turtles mediates top-down effects of tiger shark intimidation in a marine ecosystemMichael R Heithaus
Department of Biological Sciences, Marine Biology Program, Florida International University, Biscayne Bay Campus ACI 371, 3000 NE 151 St, North Miami, FL 33181, USA
J Anim Ecol 76:837-44. 2007..Bay, Australia, we found that herbivorous green sea turtles (Chelonia mydas Linnaeus, 1758) threatened by tiger sharks (Galeocerdo cuvier Peron and LeSueur, 1822) select microhabitats in a condition-dependent manner...
- Molecular organization of 5S rDNA in sharks of the genus Rhizoprionodon: insights into the evolutionary dynamics of 5S rDNA in vertebrate genomesDanillo Pinhal
Departamento de Morfologia, Instituto de Biociencias, UNESP Universidade Estadual Paulista, CEP 18618 000, Botucatu, SP, Brazil
Genet Res (Camb) 91:61-72. 2009..study, we attempted a molecular characterization of the 5S rDNA in two closely related species of carcharhiniform sharks, Rhizoprionodon lalandii and Rhizoprionodon porosus, as well as a further comparative analysis of available data ..
- Hypoxic survival strategies in two fishes: extreme anoxia tolerance in the North European crucian carp and natural hypoxic preconditioning in a coral-reef sharkGoran E Nilsson
Department of Molecular Biosciences, University of Oslo, PO Box 1041, NO 0316 Oslo, Norway
J Exp Biol 207:3131-9. 2004..Interestingly, hypoxic preconditioning lowers its metabolic rate and its critical P(O(2)). Moreover, repeated anoxia appears to stimulate metabolic depression in an adenosine-dependent way...
- Evolution of the trypanorhynch tapeworms: parasite phylogeny supports independent lineages of sharks and raysPeter D Olson
Department of Zoology, The Natural History Museum, Cromwell Road, London SW75BD, UK
Int J Parasitol 40:223-42. 2010..the original hosts of the two primary parasite lineages to be alternatively rajiform batoids and carcharhiniform sharks. This fundamental split provides independent support for rejecting the notion that rays are derived sharks, and ..
- Are indirect genetic benefits associated with polyandry? Testing predictions in a natural population of lemon sharksJoseph D DiBattista
Redpath Museum and Department of Biology, McGill University, 859 Sherbrooke St West, Montreal, Quebec, Canada
Mol Ecol 17:783-95. 2008..of polyandry in a natural population, by using data from a long-term genetic and demographic study of lemon sharks (Negaprion brevirostris) at Bimini, Bahamas...
- Population genetic structure of Earth's largest fish, the whale shark (Rhincodon typus)A L F Castro
Department of Biology, University of South Florida, SCA110, 4202 E Fowler Ave, Tampa, FL 33620, USA
Mol Ecol 16:5183-92. 2007..To assess the population structure of whale sharks (Rhincodon typus), we sequenced complete mitochondrial DNA control regions from individuals collected across a ..
- Evolution of high-performance swimming in sharks: transformations of the musculotendinous system from subcarangiform to thunniform swimmersSven Gemballa
Evolution, Bio Geosphere Dynamics Program EBID, Department of Zoology, D 72076 Tubingen, Germany
J Morphol 267:477-93. 2006In contrast to all other sharks, lamnid sharks perform a specialized fast and continuous "thunniform" type of locomotion, more similar to that of tunas than to any other known shark or bony fish...
- The elasmobranch spiracular organ. I. Morphological studiesM A Barry
Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
J Comp Physiol A 163:85-92. 1988..In both species, hyomandibula flexion should result in hair cell depolarization, and sensory afferent excitation, based on the direction of the observed (skate) or expected (shark) deflection of hair cell cilia...
- Lamprey parasitism of sharks and teleosts: high capacity urea excretion in an extant vertebrate relicMichael P Wilkie
Department of Biology, Mount Allison University, Sackville, NB, Canada E4L 1E4
Comp Biochem Physiol A Mol Integr Physiol 138:485-92. 2004We observed 10 sea lampreys (Petromyzon marinus) parasitizing basking sharks (Cetorhinus maximus), the world's second largest fish, in the Bay of Fundy...
- Nuclear and mitochondrial DNA reveals isolation of imperilled grey nurse shark populations (Carcharias taurus)H Ahonen
Department of Biological Sciences, Macquarie University, Sydney, 2109 NSW, Australia
Mol Ecol 18:4409-21. 2009Loss of sharks and other upper-trophic marine predators has sparked worldwide concern for the stability of ocean ecosystems...
- Response of juvenile scalloped hammerhead sharks to electric stimuliStephen M Kajiura
Department of Biological Sciences, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431, USA
Zoology (Jena) 112:241-50. 2009b>Sharks can use their electrosensory system to detect electric fields in their environment...
- Review: Analysis of the evolutionary convergence for high performance swimming in lamnid sharks and tunasD Bernal
Center for Marine Biotechnology and Biomedicine and Marine Biology Research Division, Scripps Institution of Oceanography, UCSD, La Jolla, CA 92093 0204, USA
Comp Biochem Physiol A Mol Integr Physiol 129:695-726. 2001..However, two Recent groups, the lamnid sharks (Family Lamnidae) and tunas (Family Scombridae), display remarkable similarities in features related to swimming ..
- Suction generation in white-spotted bamboo sharks Chiloscyllium plagiosumCheryl D Wilga
Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881, USA
J Exp Biol 211:3128-38. 2008..In this study we investigated the mechanism for suction generation during feeding in white-spotted bamboo sharks, Chiloscyllium plagiosum and compared it with that in teleosts...
- Fluid dynamics of feeding behaviour in white-spotted bamboo sharksSandra Nauwelaerts
Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881, USA
J Exp Biol 211:3095-102. 2008..The hydrodynamics of suction feeding in white-spotted bamboo sharks (Chiloscyllium plagiosum) was studied in three behaviours: successful strikes, intraoral transports of prey and ..
- Quantification of the maternal-embryonal nutritional relationship of elasmobranchs: case study of wobbegong sharks (genus Orectolobus)C Huveneers
Threatened Endangered and Protected Species subprogram, SARDI Aquatic Sciences, 2 Hamra Avenue, Adelaide, South Australia 5165, Australia
J Fish Biol 78:1375-89. 2011The present study used wobbegong sharks (genus Orectolobus) to assess the threshold value proposed by previous research to categorize strict lecithotrophic from incipient histotrophic species...
- Complex movements, philopatry and expanded depth range of a severely threatened pelagic shark, the oceanic whitetip (Carcharhinus longimanus) in the western North AtlanticLucy A Howey-Jordan
Microwave Telemetry, Inc, Columbia, Maryland, USA
PLoS ONE 8:e56588. 2013Oceanic whitetip sharks (Carcharhinus longimanus) have recently been targeted for conservation in the western North Atlantic following severe declines in abundance...
- Immunoglobulin Constant Region Switch and Hypermutation in the Nurse SharkEllen Hsu; Fiscal Year: 2012..Elucidating shared and divergent regulatory pathways in mammals and in sharks, representatives of the earliest vertebrates with a RAG recombinase-based immune system, will allow us to gain ..
- ONTOGENY AND PHYLOGENY OF THE MHCMartin Flajnik; Fiscal Year: 2009..g. the pufferfish). In the vertebrate tree, the cartilaginous fish (elasmobranchs including the sharks, skates, and rays) and amphibians are at important phylogenetic junctures, but these animals have not been well ..
- EVOLUTION OF ADAPTIVE IMMUNITYMartin F Flajnik; Fiscal Year: 2013..The immunoglobulin (Ig) gene organization in cartilaginous fish (sharks, skates, and rays), the so-called cluster organization, allows for plasticity in the types of genes that can be ..
- Aminosterol MSI-1436 as a Therapeutic for ObesityMichael McLane; Fiscal Year: 2004..We have discovered a natural occurring (in dogfish sharks), novel aminosterol, MS1-1436, that causes body weight reduction in genetically obese or diet-induced obese ..
- Cell and Molecular Biology of Marine ElasmobranchsDavid Barnes; Fiscal Year: 2006..We propose to develop cell lines from marine elasmobranchs (sharks and skates), animals that are broadly exploited in biomedical research as models in physiology, endocrinology, ..
- REGENERATION AND GROWTH IN HAIR CELL EPITHELIAJEFFREY CORWIN; Fiscal Year: 1990..Recently I demonstrated hair cell production occurring perpetually in the ears of sharks, skates, and amphibians...
- LOWER VERTEBRATE IMMUNOGLOBULIN AND B2-MICROGLOBULINGARY LITMAN; Fiscal Year: 1980..Immunoglobulin will be isolated from the sera of sharks. CNBr and tryptic digests will be made of the immunoglobulin heavy chains and the resulting fragments will be ..
- Highly Stable, Anthrax-specific Shark Antibody FragmentMartin Flajnik; Fiscal Year: 2004..Recent work identified a novel antibody isotype, called IgNAR (novel antigen receptor) in the serum of nurse sharks. This molecule is unusual as the variable (V) regions, responsible for binding antigen, did not form a dimer as in ..
- Origins of T Helper Cell Function in Adaptive ImmunityMICHAEL CRISCITIELLO; Fiscal Year: 2005..Although all jawed vertebrates have the basic antigen receptors required, studies in sharks have suggested sub-optimal T cell function in this oldest such group compared to that of mammals...
- Validation of topography-biased antibody librariesSylvia Smith; Fiscal Year: 2005..Furthermore, this study will lay the foundation for further development of highly specific and high affinity antibodies to a diverse array of toxins. ..
- Office for Access to Biomedical Research and TrainingCHARLES BIGGER; Fiscal Year: 2008..unreadable] [unreadable] [unreadable]..
- Mechanisms of renal cell adaptation to hypertonicityDIETMAR KUELTZ; Fiscal Year: 2006..Aim 4: By studying the proteins that are targeted by GADD45 proteins during hypertonic stress in renal inner medullary cells. ..
- PREVENTION OF DENTAL CARIESShozo Takagi; Fiscal Year: 2005....
- MICROMAGNETIC RESONANCE ELASTOGRAPHYRICHARD MAGIN; Fiscal Year: 2006....
- Cochlear Type II Afferents and Nociception in the Inner*Jaime Garcia Anoveros; Fiscal Year: 2004....
- MICROARRAY ANALYSIS OF RETINAL DEGENERATION IN MICECaroline Zeiss; Fiscal Year: 2007..Colin Barnstable, Professor of Neurobiology and Ophthalmology, who is an internationally recognized molecular biologist using mouse models of retinal development and degeneration. ..
- Hypospadias: Interactions of Sex Steroids and Fgfr2Martin Cohn; Fiscal Year: 2006..This will test directly the extent to which genital developmental mechanisms are conserved across species. ..
- MODULATION OF CHOROID PLEXUS CHOLINE TRANSPORT BY METALSAlice Villalobos; Fiscal Year: 2002..abstract_text> ..
- Biomechanics and the lamprey central pattern generatorERIC TYTELL; Fiscal Year: 2008..abstract_text> ..
- GLYCOSIDASES AS RELATED TO SPHINGOLIPIDOSESYu Teh Li; Fiscal Year: 2008..Our ultimate goal is to produce recombinant enzymes and make these biomedically useful glycosidases available to investigators in various fields. ..
- STRESS MODULATION OF CHOLINE TRANSPORT BY CHOROID PLEXUSAlice Villalobos; Fiscal Year: 2002..Therefore, a greater understanding of the energetics and modulation of medicated choline transport across the CSF-blood barrier would allow more effective prevention, management and treatment of such disorders. ..
- An Imprinted Gene Cluster on Mouse Chromosome 12Jennifer Schmidt; Fiscal Year: 2008..abstract_text> ..
- CANCER CHEMOPREVENTION--ROLE OF INFECTION/IMMUNITYCharles Loprinzi; Fiscal Year: 2003..abstract_text> ..
- Hawaii Clinical & Translational Science InstituteGary Ostrander; Fiscal Year: 2006..Accomplishment of these planning phase activities would prepare UH for submission of a competitive full CTSA application for 2007. [unreadable] [unreadable] [unreadable]..