TURNER, Robbin J; LIGHTON, John R; Sable Systems International; University of Nevada, Las Vegas: Bigger is better: The interactions of water relations, body size and metabolism in the terrestrial isopod, Armadillidium vulgare. The broadly distributed woodlouse, Armadillidium vulgare is a common representative of mesic to mesic-xeric habitats. These crustaceans� adaptations for water balance � loss, […]

LOCKHART, S.J.; MOOI, R.; JONES, C.D.; California Academy of Sciences; California Academy of Sciences; AMLR, Southwest Fisheries Science Center: Benthic imagery of echinoids living in Antarctic shelf habitats In March of 2003, the US Antarctic Marine Living Resources (AMLR) program conducted a benthic trawl survey of demersal fish and associated invertebrates in the regions around […]

GERLACH, N.M.*; KETTERSON, E.D.; Indiana University, Bloomington; Indiana University, Bloomington: Behavioral responses to a GnRH challenge in male dark-eyed juncos (Junco hyemalis) This study examined the role of gonadotropin-releasing hormone (GnRH) in eliciting courtship behavior in a male songbird. GnRH is a peptide produced by the hypothalamus that stimulates secretion of gonadotropins from the pituitary. […]

PORTOCARRERO, R.J.; WUNDERLICH, R.E.*; James Madison University; James Madison University: Arm and tail use during terrestrial bipedalism in Propithecus verreauxi Leaping primates use arm and tail movements to assist the overall acceleration of the body and to initiate rotations. The extent to which primates use the arms or tail is dependent on body size. Propithecus […]

MCCURDY, DG*; FORBES, MR; MAUTNER, SI; COOK, K; LOGAN, SL; LANCASTER, D; Albion College; Carleton University; Carleton University; Carleton University; Albion College; Albion College; ; : Are female-biased sex ratios in a key amphipod caused by male-biased predation or sex-distorting parasites? The burrowing amphipod Corophium volutator is a key prey species for migratory shorebirds and […]

SCHOLL, A.M.*; VAJDA, A.M.; NORRIS, D.O.; Univ. of Colorado, Boulder; Univ. of Colorado, Boulder; Univ. of Colorado, Boulder: Androgen Increases Tyrosine Hydroxylase Immunoreactivity in the Preoptic Neurons of the Brain of Developing Tiger Salamander, Ambystoma tigrinum This study investigated possible effects of precocious exposure to the gonadal steroids estradiol (E2) and dihydrotestosterone (DHT) on the […]

HUTCHINSON, J.R.; ANDERSON, F.C.; BLEMKER, S.S.; DELP, S.L.; Royal Veterinary College, Univ. London; Stanford Univ., CA; Stanford Univ., CA; Stanford Univ., CA: Analysis of hindlimb muscle moment arms in Tyrannosaurus rex using a three-dimensional musculoskeletal computer model. We have developed a 3D graphics-based model of the musculoskeletal system of the theropod dinosaur Tyrannosaurus rex to […]

DULEH, SN; POPE, RK; Indiana University South Bend; Indiana University South Bend: Active Rac1B in Dictyostelium Discoideum Co-localizes with F-actin at Cell:Cell Contacts Rac, a small G-protein in the Ras superfamily, is involved in the accumulation and organization of actin filaments. Actin filaments and associated proteins are responsible for cellular movement, cytokinesis, and phagocytosis. To […]

WEBSTER, MD; COHRS, CA; EISENSCHENK, JJ; OLSON, KA; MEULENERS, AM; St. John’s University; College of St. Benedict; St. John’s University; St. John’s University; College of St. Benedict: Acclimation to heat in the Cactus Mouse, Peromyscus eremicus. We compared metabolic rate and body composition in two groups of P. eremicus housed under for three weeks at […]

WALTER, Rebecca; CARRIER, David; KIM, Hyein; Univ. of Utah: Acceleration in Dogs An animal�s ability to accelerate rapidly is likely to play an important role in many predator-prey interactions. To better understand the mechanics of acceleration in quadrupedal mammals, gait characteristics and ground forces of dogs were analyzed during rapid accelerations. Dogs were videotaped as […]