GOODALE, E.; Univ. of Massachusetts, Amherst: The attraction of mixed-species flocking birds to the vocalizations of other species Can playback be used to investigate the structure of a mixed-species bird flock community? I In this study, I played back the vocalizations of the two most frequent members of a large Sri Lankan flock system, the […]

KAPLAN, P.; University of Michigan: Testing the role of competition as a community organizer using limiting similarity Biotic interactions, such as competition, are the chief structurers of modern communities. A uniformitarian view would suggest the same for paleocommunities, but paleontologists have made little headway in demonstrating such a relationship through deep time. The main difficulty […]

HALPIN*, P. M.; MENGE, B. A.; HOFMANN, G. E.; Univ. of California, Santa Barbara; Oregon State Univ.; Univ. of California, Santa Barbara: Fine-scale temporal and spatial variation in the heat shock response of mussels in nature One of the potential effects of global climate change is the increase of thermal stresses on organisms. Ecologists and […]

TRACY, C/R; NUSSEAR, K/E; MEDICA, P/A; MARLOW, R/M; CORN, P/S; University of Nevada, Reno; University of Nevada, Reno; U.S. Fish and Wildlife Service, Nevada; University of Nevada, Reno; Aldo Leopold Wilderness Research Institute, Missoula: Estimates of population size in the desert tortoise may be impossible or impractical Distance sampling is currently the standard method for […]

THORNTON, S.J.; DANIEL, K.*; HULBERT, A.J.; University of British Columbia, Vancouver, Canada; University of Otago, Dunedin, New Zealand; University of Wollongong, Australia: Seasonal variations in membrane acyl composition and mitochondrial respiratory rate of muscle tissues in European hedgehogs suggest cardiac tissue is preacclimated to hibernation During hibernation, polyunsaturation of phospholipids increases to maintain membrane fluidity […]

PRUITT, NL; Colgate University: Seasonal Changes in Membrane Lipids Associated with Freeze Tolerance in Eurosta solidaginis Third instar larvae of the goldenrod gall fly Eurosta solidaginis (Diptera: Tephritidae) are freeze-tolerant in winter. Cell membranes must compensate for both low temperature and dehydration during freezing. Documented adaptations to low temperature include increased fatty acid unsaturation and […]

DANIEL, S; KORINE, C; PINSHOW, B; Jacob Blaustein Inst. Desert Res. and Ben-Gurion University of the Negev; Jacob Blaustein Inst. Desert Res. ; Jacob Blaustein Inst. Desert Res. and Ben-Gurion University of the Negev: Roost selection, thermoregulatory behavior and foraging activity in a desert dwelling bat during lactation We investigated the patterns of energy use […]

TRACY, C. R.*; CHRISTIAN, K. A.; YOUNG, J. E.; Charles Darwin University; Charles Darwin University; Charles Darwin University: Relationships between temperature preferences, hopping performance and water loss in northern Australian Hylid frogs. We measured preferred body temperature in a thermal gradient for twelve species of Hylid frogs (genus Litoria and Cyclorana) from the wet/dry tropics […]

ANDERSON, N.J.; Idaho State Univ.: Multitasking: How a tortoise manages multiple constraints on body temperature regulation. In ectotherms, body temperature is known to influence a variety of behavioral and physiological processes. Many studies have found that ectothermic vertebrates may spend much of their time regulating their body temperature in order to optimize the rates of […]

LIGON, D.B.; Oklahoma State University: Effects of Incubation Temperature on Embryonic Development In a Tortoise, Geochelone sulcata The thermal environment to which reptile embryos are exposed can vary both temporally and spatially among individuals. In response to variable incubation conditions, developing embryos may make physiological adjustments to compensate for temperature differences. Physiological compensation in response […]