Research Topics
| Karen M WarkentinSummaryAffiliation: Boston University Country: USA Publications
| Collaborators
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Detail Information
Publications
Hatching timing, oxygen availability, and external gill regression in the tree frog, Agalychnis callidryasKaren M Warkentin
Smithsonian Tropical Research Institute, P O Box 2072, Balboa, Panama
Physiol Biochem Zool 75:155-64. 2002..Together, these results suggest that external gills enhance the oxygen uptake of embryos and are necessary to extend embryonic development past the onset of hatching competence...
Plasticity of hatching in amphibians: evolution, trade-offs, cues and mechanismsKaren M Warkentin
Department of Biology, Boston University, Boston, MA 02215, USA
Integr Comp Biol 51:111-27. 2011..I discuss promising directions for research and the opportunities that the hatching of amphibians offers for integrative studies of the mechanisms, ecology and evolution of a critical transition between life-history stages...- Oxygen, gills, and embryo behavior: mechanisms of adaptive plasticity in hatchingKaren M Warkentin
Department of Biology, Boston University, 5 Cummington St, Boston, MA 02215, USA
Comp Biochem Physiol A Mol Integr Physiol 148:720-31. 2007..Respiratory plasticity and oxygen-sensitive behavior appear critical for the hatching plasticity that balances a predation risk trade-off across life stages... - Flexible information sampling in vibrational assessment of predation risk by red-eyed treefrog embryosKaren M Warkentin
Department of Biology, Boston University, Boston, MA 02215, USA
J Exp Biol 210:614-9. 2007..This flexible sampling is consistent with embryos balancing a trade-off between the value and cost of information... - Environmentally cued hatching across taxa: embryos respond to risk and opportunityKaren M Warkentin
Department of Biology, Boston University, Boston, MA 02215, USA
Integr Comp Biol 51:14-25. 2011..Integrative and comparative studies of the timing of hatching will improve our understanding of embryos as both evolving and developing organisms... - Temporal pattern cues in vibrational risk assessment by embryos of the red-eyed treefrog, Agalychnis callidryasKaren M Warkentin
Department of Biology, Boston University, Boston, 02215, USA
J Exp Biol 209:1376-84. 2006..Vibration-cued hatching in A. callidryas embryos offers an opportunity to experimentally assess the behavioral decision rules underlying an effective and costly anti-predator defense... - Development, surface exposure, and embryo behavior affect oxygen levels in eggs of the red-eyed treefrog, Agalychnis callidryasKaren M Warkentin
Department of Biology, Boston University, Boston, MA, 02215, USA
Physiol Biochem Zool 78:956-66. 2005..Embryos may maintain development under hypoxic conditions by strategic positioning of respiratory surfaces, particularly external gills, to exploit the patchy distribution of oxygen within their eggs... 
Spatial contagion drives colonization and recruitment of frogflies on clutches of red-eyed treefrogsMyra C Hughey
Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA
Biol Lett 8:887-9. 2012..This study demonstrates how reward contagion can influence colonization dynamics and suggests that colonization patterns caused by contagion may have important population- and community-level consequences...- Frequency information in the vibration-cued escape hatching of red-eyed treefrogsMichael S Caldwell
Department of Biology, Boston University, Boston, MA 02215, USA
J Exp Biol 212:566-75. 2009..Moreover, comparing frequency spectra of predator and benign vibrations suggests that the presence of energy in frequencies outside the range characteristic of attacks might serve as an indicator of benign disturbance... - To hatch and hatch not: similar selective trade-offs but different responses to egg predators in two closely related, syntopic treefrogsIvan Gomez Mestre
Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA
Oecologia 153:197-206. 2007..callidryas, and spontaneous hatching is earlier and more synchronous. This is congruent with predictions based on selection by egg predators in the absence of a strong escape hatching response... - External gills and adaptive embryo behavior facilitate synchronous development and hatching plasticity under respiratory constraintJessica R Rogge
Department of Biology, Boston University, Boston, MA 02215, USA
J Exp Biol 211:3627-35. 2008..Such behavior may be critical both to delay hatching after hatching competence and to obtain sufficient oxygen for normal, synchronous development at earlier stages... - Wasp predation drives the assembly of fungal and fly communities on frog egg massesMyra C Hughey
Department of Biology, Boston University, 5 Cummington Street, Boston, MA, 02215, USA
Oecologia 168:1057-68. 2012..Processing chain interactions may be a generally important mechanism increasing the diversity of local communities, including very ephemeral ones... - Vibrational signaling in the agonistic interactions of red-eyed treefrogsMichael S Caldwell
Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA
Curr Biol 20:1012-7. 2010.... - Predicting predation through prey ontogeny using size-dependent functional response modelsMichael W McCoy
Department of Biology, Virginia Commonwealth University, Richmond, USA
Am Nat 177:752-66. 2011..Our results highlight the importance of incorporating prey size when modeling consumer-prey dynamics in size-structured, growing prey populations... - Amphibian embryo and parental defenses and a larval predator reduce egg mortality from water moldIvan Gomez-Mestre
Department of Biology, Boston University, 5 Cummington Street, Boston, Massachusetts 02215, USA
Ecology 87:2570-81. 2006..Finally, despite being potential toad hatchling predators, R. sylvatica tadpoles can have a positive effect on B. americanus eggs. They eat water mold off infected toad clutches, increasing their hatching success... - Prey responses to predator chemical cues: disentangling the importance of the number and biomass of prey consumedMichael W McCoy
Department of Biology, East Carolina University, Greenville, North Carolina, USA
PLoS ONE 7:e47495. 2012.... - Opposite shifts in size at metamorphosis in response to larval and metamorph predatorsJames R Vonesh
Department of Biology, Boston University, Boston, MA 02215, USA
Ecology 87:556-62. 2006..Interestingly, predator effects on larval duration were not independent; tadpoles delayed emerging in response to spiders, but only in the absence of water bugs...