Meeting Abstract 53.2  Jan. 6  Gene transcription during exposure to, and recovery from, cold and desiccation stress in Drosophila melanogaster SINCLAIR, Brent J.*; ROBERTS, Stephen P.; GIBBS, Allen G.; University of Western Ontario; University of Nevada – Las Vegas; University of Nevada – Las Vegas bsincla7@uwo.ca Tolerance to low temperature and desiccation are often thought to be […]

Meeting Abstract 53.3  Jan. 6  Endothelin from the killifish, Fundulus heteroclitus HYNDMAN, Kelly A*; EVANS, David H; University of Florida, Gainesville; Mount Desert Biological Laboratory, Salisbury Cove ME khyndman@zoo.ufl.edu Endothelin-1 (ET-1) is a vasoactive, paracrine peptide found in all vertebrates. It is produced in a variety of cells including endothelial, vascular smooth muscle, and transporting epithelial cells […]

Meeting Abstract 53.4  Jan. 6  Amino Acid Transporter Gene Expression During Sea Urchin Development MEYER, E.*; MANAHAN, D. T.; Univ. Southern California; Univ. Southern California elishame@usc.edu The mechanisms that regulate transport of organic nutrients during early animal development are not fully understood. Several amino acid transporter genes were cloned from a cDNA library of 4-cell-stage embryos of […]

Meeting Abstract 53.6  Jan. 6  A study on cation/H+ exchangers in the midgut of Manduca sexta larvae: Flux experiments, tissue mRNA expression analysis and cellular localization. BLAESSE, Anne-Kathrin*; BROEHAN, Gunnar; WEIHRAUCH, Dirk; University of Osnabrueck, Germany; University of Osnabrueck, Germany; University of Osnabrueck, Germany weihrauchblues@gmx.net The midgut epithelium of M. sexta consists mainly of two cell types: […]

Meeting Abstract 53.4  Saturday, Jan. 5  Sexual signals, performance, and testosterone in Bahamian Anolis lizards HUSAK, J.F.*; IRSCHICK, D.J.; MEYERS, J.J.; MOORE, I.T.; Univ. of Massachusetts; Univ. of Massachusetts; Univ. of Massachusetts; Virginia Tech husak@bio.umass.edu Sexual signals often convey information about male �quality� to rivals. As an example, the size of male throat fans (dewlaps) in territorial […]

Meeting Abstract 53.5  Saturday, Jan. 5  Seasonal differences in the reproductive endocrinology of two recently-diverged songbird (Junco hyemalis) populations following a unique colonization event ATWELL, J.W.*; CARDOSO, G.C.; KETTERSON, E.K.; Indiana Univ.; Univ. of Chicago; Indiana Univ. jwatwell@indiana.edu In variable environments, selection is expected to favor endocrine mechanisms that efficiently coordinate seasonal physiology and behavior to maximize […]

Meeting Abstract 53.2  Saturday, Jan. 5  Induction of female pheromone production in male garter snakes PARKER, M. Rockwell*; MASON, Robert T.; Oregon State Univ.; Oregon State Univ. parkermi@science.oregonstate.edu Organisms that rely solely on chemical signals to determine the sex of conspecifics serve as good models for understanding the effect of hormonal manipulation on signal production. Red-sided garter […]

Meeting Abstract 53.3  Saturday, Jan. 5  Hormonal mediation of female aggression: A possible role for androgens in the sex-role reversed pipefish, Syngnathus scovelli SCOBELL, Sunny K.*; KNAPP, Rosemary; JONES , Adam G.; 1-Texas A&M University, College Station; 2-University of Oklahoma, Norman; University of Oklahoma, Norman; Texas A&M University, College Station sscobell@bio.tamu.edu Little is known about the hormonal […]

Meeting Abstract 53.1  Saturday, Jan. 5  Effects of estradiol on sexual motivation and preferences towards conspecific calls in female t�ngara frogs CHAKRABORTY, Mukta*; BURMEISTER, S.S; Univ. of North Carolina, Chapel Hill mukta@email.unc.edu Sex steroid hormones influence reproductive behavior in most vertebrates. In t�ngara frogs, females use acoustic cues to choose mates. Males produce a simple �whine� call, […]

Meeting Abstract 53.6  Saturday, Jan. 5  Effects of Testosterone on Sexually Dimorphic Traits in Mexican Banded Geckos (Coleonyx elegans) GOLINSKI, A.**; KRATOCHVIL, L.; JOHN-ALDER, H.; Rutgers Univ., New Brunswick; Charles Univ., Prague; Rutgers Univ., New Brunswick golinski@aesop.rutgers.edu Eyelid geckos (Eublepharidae) exhibit genetic (GSD) and temperature-dependent (TSD) sex determination as well as sexual dimorphisms in head and body […]