RUBENSON, J*; MARSH, R.L.; Biology Department, Northeastern University: Joint moments and powers during the swing-phase of running in the guinea fowl (Numida meleagris) Although locomotor kinematics and segmental energetics have been analyzed across bipedal species, few comparative studies have adopted a traditional Newton-Euler dynamic analysis of locomotion. This type of analysis is fundamental to understanding […]

GEISLER, B.; DITTMORE, A.; GALLERY, B.; STRATTON, T.; FEARING, R.; AUTUMN, K.*; Lewis & Clark College; Lewis & Clark College; Lewis & Clark College; Lewis & Clark College; Univ. of California, Berkeley; Lewis & Clark College; ; : Deformation of isolated gecko setal arrays: bending or buckling? 2. Kinetics. Conventional pressure sensitive adhesives (PSAs) are […]

PEATTIE, A.M.*; DELANNOY, S.M.; RUSSELL, A.P.; FULL, R.J.; Univ. of California, Berkeley; Univ. of Calgary; Univ. of Calgary; Univ. of California, Berkeley: Deformation of isolated gecko setal arrays: bending or buckling? 1. Kinematics. The adhesive material of the gecko foot consists of arrays of millions of microscopic, branched hairs (setae). To attach effectively to rough […]

SPAGNA, J.C.*; GOLDMAN, D.I.; FULL, R.J.; Univ. of California, Berkeley; Univ. of California, Berkeley; Univ. of California, Berkeley: Contribution of a Distributed Foot to Running Performance in Arthropods Arthropods are capable of stable running at high speeds over irregular surfaces. Foot-substrate interactions must contribute to this ability, yet foot placement during dynamic movement remains largely […]

HYDE, Martha L; West Texas A&M University: Bipedal Locomotion In Two Species of Kangaroo Mice in the Laboratory Previous work on Great Basin Desert kangaroo mice (9-13 g), Microdipodops pallidus and M. megacephalus have been shown to move bipedally as their nearest relatives, the kangaroo rats. Neither species of kangaroo mouse show a sustained bipedal […]

BOUGHTON, R.K.*; KAMP, M.F.; BRIDGE, E.; SCHOECH, S.J.; Univ. Memphis: Testosterone, immune function, and energetics in Japanese Quail Evolutionary theory predicts that the high energetic cost of reproduction will induce a trade-off between reproduction and other physiologic functions, such as the immune system. Though this assumes a cost to maintaining or increasing immune function, few […]

CZARNOWSKI, M.R.*; LOMBARDO, M.P.; POWER, H.W.; HASSELQUIST, D.; Rutgers University, New Brunswick; Grand Valley State University; Rutgers University, New Brunswick; Lund University, Sweden: Sudden energetic deficit in male tree swallows (Tachycineta bicolor) has negligible effect on immunocompetence and glucocorticosteroid levels An organism�s response to a sudden, unpredictable event is integral in determining its current and […]

FRENCH, S.S.*; MOORE, M.C.; Arizona State University; Arizona State University: Immune Function Varies with Reproductive Stage in Female Tree Lizards, Urosaurus ornatus A major challenge in integrative biology is understanding the mechanisms by which organisms regulate trade-offs among various functions competing for limiting resources. Key among these competing processes are reproduction and immune function, and […]

OWEN-ASHLEY, N. T.*; HASSELQUIST, D.; WINGFIELD, J. C.; Univ. of Washington, Seattle; Lund University, Sweden; Univ. of Washington, Seattle: Examining the indirect pathways of testosterone-induced immunosuppression in male songbirds. I.) Effects of corticosterone and estradiol on acquired immune function Recent evidence suggests that testosterone (T)-induced immunosuppression in male birds occurs through a combination of indirect […]

CHAKRABORTY, Mukta *; HEWS, Diana K.; Indiana State University; Indiana State University: Endocrine-immune interactions in male Sceloporus lizards: testing assumptions of the immunocompetence handicap hypothesis Variation in male secondary sexual traits contributes to explaining variation in reproductive success. Regulation of secondary sex traits is often mediated by the endocrine system, especially testosterone. Although high testosterone […]