Meeting Abstract P3.20  Saturday, Jan. 5  Differential growth and the evolution of novel vertebral morphology: lessons from the cypriniform Weberian apparatus BIRD, NC*; HERNANDEZ, LP; George Washington University; George Washington University nbird@gwu.edu The Weberian apparatus, a complex assemblage of vertebral elements linking the inner ear to the swimbladder, significantly enhances hearing within Otophysi. We are interested in […]

Meeting Abstract P3.15  Saturday, Jan. 5  Diet-induced developmental gut plasticity: Implications for the evolution of alternate feeding strategies within and between species LEDON-RETTIG, C.*; PFENNIG, D.W.; NASCONE-YODER, N.; Univ. North Carolina, Chapel Hill; Univ. North Carolina, Chapel Hill; North Carolina State Univ. ledonret@email.unc.edu Many species exhibit phenotypic plasticity in digestive tract morphology and physiology, and this plasticity […]

Meeting Abstract P3.8  Saturday, Jan. 5  Diastolic filling time limits cardiac output in thermally stressed grass shrimp (Palaemonetes pugio): Physiological limits to temperature extremes REIBER, C.L.; MIKA, T.L.*; University of Nevada Las Vegas; University of Nevada Las Vegas carl.reiber@unlv.edu Metabolic rate increases with increasing temperature in poikilothermic animals, to maintain aerobic metabolism, internal oxygen delivery rates must […]

Meeting Abstract P3.67  Saturday, Jan. 5  Developmental temperature affects larval anuran shape trajectories JORGENSEN, Michael/E.*; SHEIL, Christopher; Ohio University mj207406@ohio.edu Few studies have quantified and described the differences in ontogenetic trajectories of developing amphibians. Here, differences in larval anuran ontogeny are examined after manipulating an abiotic developmental factor��temperature. Developmental series of American Toad (Anaxyrus americanus) larvae were […]

Meeting Abstract P3.83  Saturday, Jan. 5  Control of salt gland secretion in two insectivorous lizard species HAZARD, L.C.**; LECHUGA, C.; ZILINSKIS, S.; Montclair State University, NJ; Montclair State University, NJ; Montclair State University, NJ hazardl@mail.montclair.edu When dietary salt content is high, some reptile species rely on cranial salt glands to supplement renal ion excretion. The salt glands […]

Meeting Abstract P3.75  Saturday, Jan. 5  Compromised weaponry enhances crayfish tailflipping ESPINOZA, S.Y.*; FAULKES, Z.; The University of Texas-Pan American Beluhua@aol.com As a defense strategy, many crustaceans perform one of two well described stereotyped single fast tailflips (~6 ms in adult crayfish), which are triggered by a neural circuit that includes medial giant interneurons (MG) and lateral […]

Meeting Abstract P3.65  Saturday, Jan. 5  Comparative Analysis of the Ontogeny of Color Pattern in two Neotropical cichlid fishes, Thorichthys meeki and Cichlasoma nigrofasciatum BEECHING, S.C.*; PIKE, R.E.; Slippery Rock University of Pennsylvania simon.beeching@sru.edu Rapid speciation, complex behavior, and striking color patterns have placed cichlid fishes (Perciformes; Cichlidae) among the most important taxa in the study of […]

Meeting Abstract P3.100  Saturday, Jan. 5  Collared Lizards Decrease Testosterone Levels in Response to Staged Territorial Intrusions: A Test of the Challenge Hypothesis CURTIS, J.L.*; BAIRD, T.A.; HEWS, D.K; Univ. of Central Oklahoma, Edmond; Univ. of Central Oklahoma, Edmond; Indiana State Univ., Terra Haute jennifercurtisl@yahoo.com The challenge hypothesis (CH) has been useful in explaining patterns of androgen […]

Meeting Abstract P3.29  Saturday, Jan. 5  Cichlid brain diversity develops at the boundaries SYLVESTER, JB*; VAN STAADEN , MJ; FRASER, GJ; STREELMAN, JT; Georgia Institute of Technology; Bowling Green State University; Georgia Institute of Technology; Georgia Institute of Technology gth644s@mail.gatech.edu Cichlid brain diversity develops at the boundaries Jonathan B. Sylvester, Moira van Staaden, Gareth J. Fraser, J. […]

Meeting Abstract P3.7  Saturday, Jan. 5  Characterization of Carbohydrates that Depress Crayfish Cardiac Rhythms following Chemoreception PAN, V.*; SILVERTHORN, D.U.; University of Texas – Austin; University of Texas – Austin silverthorn@mail.utexas.edu It has previously been observed that freshwater crayfish demonstrate a depression in cardiac rhythm upon detection of certain carbohydrates. The location and structure of the molecular […]