LANDYS, M.M.*; GOYMANN, W.; SOMA, K.K.; SLAGSVOLD, T.; Univ. of Oslo, Norway; Max Planck Institute of Ornithology, Andechs; Univ. of British Columbia, Vancouver; Univ. of Oslo, Norway: Dehydroepiandrosterone (DHEA) and territorial aggression in the European nuthatch During breeding, territorial aggression in male birds is closely linked to secretion of gonadal testosterone (T). However, hormonal regulation […]

BUCKLEY, Christine R.*; ADOLPH, Steven C.; IRSCHICK, Duncan J.; Tulane University; Harvey Mudd College; Tulane University: Persistence of incubation effects on the phenotypes of hatchling western fence lizards, Sceloporus occidentalis The conditions under which an organism develops can have profound effects on its phenotype and subsequent evolution. Recently, incubation temperatures and their effects on offspring […]

ANGIELCZYK, K.D.*; PARHAM, J.F.; California Academy of Sciences; Joint Genome Institute: Geometric Morphometric Analysis of Plastron Shape in the Western Pond Turtle (Emys marmorata): Implications for Conservation and Paleontology We present results of a geometric morphometric study of plastron shape in Emys marmorata. We digitized 19 landmarks on the sulci between the plastral scutes using […]

ROBBINS, T.R.*; WARNER, D.A.; University of South Florida; The University of Sydney: Fluctuations in the incubation environment: Does the pattern or magnitude influence egg survival and hatchling phenotypes in a lizard? Environmental and maternal factors can shape offspring phenotypes in ways that could influence offspring survival and fitness. Most studies that evaluate environmental effects on […]

WESTERMAN, E.L.*; HARRIS, L.G.; University of New Hampshire; University of New Hampshire: Environmentally caused changes in asexual reproduction rates in two invasive sea squirts: Botryllus schlosseri and Botrylloides violaceus An increase in global ocean temperatures over the last century has coincided with an increase in invasive species. Ascidians have been particularly successful as invaders and […]

SCHMIDT, K. *; STARCK, J.M.; Ludwig-Maximilians-University of Munich; Ludwig-Maximilians-University of Munich: Developmental plasticity vs. phylotypic constraints during early embryogenesis of zebra fish, Danio rerio During the phylotypic stage vertebrate embryos pass through a period of morphological similarity. In zebra fish, Danio rerio, multiple correlations among characters stabilize morphology during the phylotypic stage, but a considerable […]

HAYES, JP*; SEARS, MW; BANTA, MR; O’CONNOR, CS; University of Nevada, Reno: Out in the cold: Physiological performance affects behavior of deer mice Physiological performance (e.g., summit metabolism (VO2max) or basal metabolic rate (BMR) is often thought to be ecologically significant. If VO2max (which describes the upper limit to heat production) and BMR (which describes […]

LIKNES, E.T.; GUGLIELMO, C.G.; SWANSON, D.L.*; Augustana College; University of Western Ontario; University of South Dakota: Fuel Storage And Mobilization Strategies Associated With Seasonal Acclimatization Of Resident Passerines Seasonal acclimatization in small birds wintering in cold climates generally results in the upregulation of metabolism in winter to meet enhanced thermoregulatory demands. We measured lipid and […]

RUSSELL, GA*; CHAPPELL, MA; HAMMOND, KA; Univ. of California, Riverside: Effects of high altitude development and cold acclimation on summit metabolism and organ mass in the deer mouse, Peromyscus maniculatus A key to understanding putatively adaptive changes in metabolic rate is identifying causative changes in organ or organ system mass. Changes in summit metabolism (maximum […]

WOODS, H.A.; Univ. of Texas, Austin: Causes and consequences of temperature-oxygen interactions in metabolism Biochemical reaction rates change more with temperature than do physical rates such as diffusion. Consequently, organisms exposed to rapid or high-magnitude temperature variation may experience profound variation in relative oxygen supply and demand. This problem is faced by all ectotherms that […]