DUONG, C.A.*; DICKSON, K.A.; California State University Fullerton: The contribution of mitochondrial proton leak as a heat source in lamnid sharks Endothermic fishes can elevate the temperature of certain tissues above ambient temperature because the tissues are served by counter-current heat exchangers that conserve metabolic heat. In lamnid sharks, warming of the locomotor musculature, visceral […]

COVI, J.A.*; HAND, S.C.; Louisiana State University; Louisiana State University: Physiological effects of V-ATPase inhibition on whole embryos of the brine shrimp, Artemia franciscana Upon exposure to anoxia, encysted embryos of the brine shrimp, Artemia franciscana, enter a potentially ametabolic state, the transition into which is facilitated in large part by an intracellular acidification exceeding […]

HOUSER, Dorian S.; CHAMPAGNE, Cory; CROCKER, Daniel E.; Sonoma State University; Sonoma State University; Sonoma State University: Glycerol gluconeogenesis in simultaneously fasting and lactating northern elephant seals Female elephant seals (Mirounga angustirostris) fast while lactating creating a metabolic conflict between energy-demanding and energy-conserving physiological mechanisms. During the ~4 week lactation period, ~90% of energy needs […]

HEAD, J.M.*; TERWILLIGER, N.B.; Univ. of Oregon, OIMB: Expression of hif-1α in the brachyuran crustacean Cancer magister. We are investigating the possible role of the hypoxia-dependent transcription factor, Hypoxia Inducible Factor-1 (HIF-1), in the response of crustaceans to hypoxia. In other organisms, the alpha subunit of HIF-1 dimerizes with the beta subunit under hypoxic conditions […]

COBLENTZ, F. E.*; TOWLE, D. W.; SHAFER, T. H.; University of North Carolina at Wilmington; Mount Desert Island Biological Laboratory; University of North Carolina at Wilmington: Expressed sequence tags from normalized cDNA libraries prepared from gill and hypodermal tissues of the blue crab, Callinectes sapidus Two cDNA libraries were constructed from gill and hypodermal tissue […]

DAVIDOWITZ, G.*; ROFF, D.A.; NIJHOUT, H.F.; University of Arizona; University of California, Riverside; Duke University: The physiological regulation of simultaneously selected life history traits. Integrating physiology and selection experiments can be a powerful tool when asking one of the central questions of evolutionary biology: why do traits respond to selection the way that they do? […]

KINDSVATER, HK*; BONSALL, MB; MANGEL, M; Univ. of Florida; Univ. of Oxford; Univ. of California, Santa Cruz: Physical and Ecological Correlates of Longevity in Pacific Rockfishes (Sebastes) We examined correlations in ecological and physical habitat traits of members of the genus Sebastes, a diverse group of fishes in the family Scorpaenidae that inhabit the North […]

WALGUARNERY, J.W.; University of Tennessee, Knoxville: Nonrandom patterns of sex determination in Anolis lizards Despite the general selective advantage afforded parents investing equally in sons and daughters, deviations from random sex determination do occur and can provide important insight into reproductive adaptation. Recently it was discovered that individuals of the lizard, Anolis carolinensis, a taxon […]

MILLER, Christine W.*; EMLEN, Douglas J.; University of Montana; University of Montana: Maternal effects shift the allometry of a sexually selected trait in the heliconia bug Sexually selected traits are especially sensitive to environmental conditions. Mothers frequently influence the environment experienced by their offspring, and, thus, play an important role in the expression of sexually […]

FERRIS, M. T.*; BURCH, C. L.; University of North Carolina, Chapel Hill; University of North Carolina, Chapel Hill: Host range evolution of the bacteriophage &Phi 6: Are trade-offs required? Viral adaptation to novel hosts can alter fitness on other hosts, and this change depends on the host-specific effects that mutations exhibit. Here we show that […]