Meeting Abstract 31.5  Wednesday, Jan. 5  Worker size effects on the tunneling performance of the red imported fire ant GRAVISH, N*; GARCIA, M; UMBANHOWAR, P.B.; GOODISMAN, M.A.D.; GOLDMAN, D.I.; Georgia Tech; Georgia Tech; Northwestern University; Georgia Tech; Georgia Tech nick.gravish@gmail.com Colonies of the red imported fire ant, Solenopsis invicta, are polymorphic (consist of a range of sizes) […]

Meeting Abstract 31.3  Wednesday, Jan. 5  Tracheal Growth and Plasticity in 5th Instar Manduca sexta HELM, BR*; DAVIDOWITZ, G; University of Arizona; University of Arizona bhelm@email.arizona.edu In insects, oxygen is supplied directly to tissues through a network of branching trachea and tracheoles: tubules that branch inward from openings along the side of the body. The tracheal system […]

Meeting Abstract 31.1  Wednesday, Jan. 5  The Role of Atmospheric Oxygen in the Evolution of Insect Body Size VANDENBROOKS, John M.*; MUNOZ, Elyse E.; WEED, Michael D.; HARRISON, Jon F.; Arizona State University; Arizona State University; Arizona State University; Arizona State University jvandenb@asu.edu While not all models agree, most estimate that over the last 500 million years […]

Meeting Abstract 31.2  Wednesday, Jan. 5  Respiratory physiology and the initiation of molting in the tobacco hornworm, Manduca sexta CALLIER, V.*; NIJHOUT, H. F.; Duke University; Duke University vc12@duke.edu In Manduca sexta, the molting process is initiated when larvae attain a set size, the critical weight. Although the critical weight phenomenon is well documented, the physiological event […]

Meeting Abstract 31.4  Wednesday, Jan. 5  Interspecific Allometry of Cockroach Tracheal Systems and the Impact of Oxygen on Their Tracheal Development MUNOZ, E.E.*; WEED, M.; HARRISON, J.F.; VANDENBROOKS, J.M.; Arizona State University; Arizona State University; Arizona State University; Arizona State University elyse.munoz@asu.edu The factors limiting insect body size are still poorly understood. One hypothesis is the possession […]

Meeting Abstract 31.3  Thursday, Jan. 5  Variation in assimilation rate among populations of Sceloporus lizards at constant and fluctuating temperatures BORCHERT, JD*; RUSCH, T; ANGILLETTA, M; Arizona State University jdborche@asu.edu We examined the assimilation rates of Sceloporus tristichus from Utah and Arizona and Sceloporus consobrinus from Nebraska and Texas. Two separate experiments were conducted: one in which […]

Meeting Abstract 31.4  Thursday, Jan. 5  The flavone, chrysin, relaxes cholecystokini or KCl-induced tension in male guinea pig gallbladder strips through multiple signaling pathways KLINE, L.W.*; KARPINSKI, E.; University of Alberta, Edmonton; University of Alberta, Edmonton lkline@ualberta.ca The flavonoids are a large group of plant-derived pholic compounds with biological effects. Chrysin has relaxant effects on both vascular […]

Meeting Abstract 31.2  Thursday, Jan. 5  Mice increase reliance on paracellular intestinal absorption in response to increased energy demand PRICE, E.R.*; RUFF, L.; GUERRA, A.; KARASOV, W.H.; University of Wisconsin – Madison; University of Wisconsin – Madison; University of Wisconsin – Madison; University of Wisconsin – Madison eprice2@wisc.edu Intestinal absorption of nutrients has traditionally been thought of […]

Meeting Abstract 31.1  Thursday, Jan. 5  Enigma of the sea urchin gut: Abiotic and biotic conditions influence form and function GIBBS, Victoria K.*; CUNNINGHAM, Adele C.; WATTS, Stephen A.; Univ. of Alabama at Birmingham; Univ. of Alabama at Birmingham; Univ. of Alabama at Birmingham victoria.gibbs@villanova.edu Seasonal reproductive cycles and factors influencing gonad production have been studied for […]

Meeting Abstract 31.2  Friday, Jan. 4  Why does immunity vary? Linking phylogenetics and life history traits to immunity in reef-building corals PINZON, JH*; BEACH-LETENDRE, JM; CAWTHORNE, A; WEIL, E; MYDLARZ, LD; Univ of Texas, Arlington; Univ of Texas, Arlington; Univ of Texas, Arlington; Univ of Puerto Rico – Mayaguez; Univ of Texas, Arlington pinzon@uta.edu Changes associated with […]