STORRS, Sara I.*; SEMLITSCH, Raymond D.; University of Missouri: Is hermaphroditism natural in amphibians?: A case of contaminated controls Is hermaphroditism natural in amphibians? Preliminary histological data from an outdoor mesocosm study suggest that a female biased sex ratio and abnormal gonads in control animals may be the result of contamination. The experiment was initiated […]

WANG, S.W.**; KITAISKAIA, E.V.; HATCH, S.A.; IVERSON, S.J.; KITAYSKY, A.S.; Univ. of Fairbanks, Alaska; Univ. of Fairbanks, Alaska; USGS, Alaska Science Center; Dalhousie Univ., Nova Scotia; Univ. of Fairbanks, Alaska: Diet affects the adrenocortical function in northern fulmars (Fulmarus glacialis) Previous studies have shown that variations in corticosterone secretion in birds might reflect either changes […]

BREUNER, CW*; CORNELIUS, JM; HAHN, TP; Univ. of Texas at Austin; Univ. of California Davis; Univ. of California Davis: Androgens and arrival biology in a migratory songbird Seasonal breeders rely on photoperiod to initiate breeding. However, local conditions can modulate the timing of nesting onset. One important component of reproductive development affected by local conditions […]

PRATT, M.C.; Bowdoin College, Brunswick, ME: Will an opportunistic invasive bryozoan displace or coexist with other epiphytic bryozoans in the Gulf of Maine? The bryozoan Membranipora membranacea was introduced into the Gulf of Maine in 1987 and within two years became the dominant epiphyte on kelps. While we know that Membranipora can increase the likelihood […]

CASPER, AF*; JOHNSON, LE; University of South Florida St. Petersburg: Patterns of microevolution and displacement in a rapidly expanding species: Insights from comparative physiological ecology of zebra and quagga mussels This research explores whether a contiguous population of adult zebra and quagga mussels (Dreissena polymorpha and D. bugensis) in a stable, divergent mosaic of river […]

WALLACE, B.P. *; SEMINOFF, J.A.; KILHAM, S.S.; SPOTILA, J.R.; DUTTON, P.H.; Duke University Marine Lab; NOAA-National Marine Fisheries Service, Southwest Science Fisheries Center; Drexel University; Drexel University ; NOAA-National Marine Fisheries Service, Southwest Science Fisheries Center: Leatherback turtles as oceanographic indicators: stable isotope analyses reveal a trophic dichotomy between ocean basins Oceanographic sampling is often […]

DUNBAR, M.B.; TOMASI, T.E.**; University of Regina; Missouri State University: Hibernation Energetics of Eastern Red Bats (Lasiurus borealis) Many bats use torpor to conserve energy during daily or seasonal periods of inactivity. Seasonal torpor (hibernation) allows bats to avoid thermoregulatory costs of extreme conditions. Unlike other temperate hibernating bats, eastern red bats (Lasiurus borealis) do […]

WELLS, S.L.*; MCCONAUGHA, J.R.; Old Dominion University; Old Dominion University: Fecundity and Reproductive Energetics in the Chesapeake Bay Blue Crab, Callinectes sapidus The blue crab, Callinectes sapidus, has historically been a major fishery in the Chesapeake Bay. Both fishery dependent and independent data indicate that the population declined abruptly in the mid-1990�s and has remained […]

BARIMO, J.F. **; MCDONALD, M.D.; WASLH, P.J.; University of Miami; University of Miami; University of Miami: The influence of photoperiod on pulsatile urea excretion in toadfish (Opsanus beta) The gulf toadfish Opsanus beta (Batrachoididae) is one of the few teleosts to maintain a functional ornithine-urea cycle (O-UC) during adult life and possess the capability to […]

FULLER, R.; Univeristy of Illinois: Testing the assumptions of the sensory bias model The sensory bias hypothesis proposes that natural selection on non-mating behaviors (e.g. foraging, anti-predator behavior, etc.) results in correlated responses in female mating preferences due to the fact that the behaviors share a common sensory system. I tested the conditions under which […]