VAN DER HAM, J.L.*; FELGENHAUER, B.E.; Univ. of Louisiana at Lafayette; Univ. of Louisiana at Lafayette: The Comparative Ultrastructure of the Aesthetascs of Speleonectes tanumekes (Crustacea, Remipedia) and Crustaceans from Stressful Environments. Osmotic stress of the freshwater environment may have a shortening effect on the length of crustacean aesthetascs. Desiccation associated with the terrestrial and […]

CHRISTEL, C.M.; DENARDO, D.F.; Arizona State University; Arizona State University: Release of Exendin-4 controlled by mechanical action in Gila Monsters, Heloderma suspectum Exendin-4 is a peptide produced exclusively by the salivary glands of the Gila Monster, Heloderma suspectum. Although exendin-4 is considered a venom component, circulating plasma levels of exendin-4 have been shown to increase […]

MEAD, K. S.; Denison University, Granville OH: Physical Tuning: Does Antennule Morphology Correlate With The Hydrodynamics Of The Flow Environment In The Crayfish Orconectes virilis? Through a variety of physical mechanisms and at several scales, the local flow environment affects the shape of waterborne chemical signals. For instance, waves, current, turbulence, and substrate roughness affect […]

FONTANA, M. F.; ASK, K. A.; MACDONALD, R. J.; CARNES, A. M.; STAUB *, N. L.; Gonzaga University, Spokane, WA; Gonzaga University, Spokane, WA; Gonzaga University, Spokane, WA; Gonzaga University, Spokane, WA; Gonzaga University, Spokane, WA: Loss of traditional mucous glands in the plethodontid salamander Ensatina eschscholtzii Amphibians possess two types of skin glands: mucous […]

REED, W.R.; CLARK, M.E.; BENOY, G.; North Dakota State University; North Dakota State University; University of Calgary: Parental and environmental factors generating variation in growth rates in free-living birds Variation in growth rates during the juvenile period can have a large influence on variation in adult morphological, behavioral and life-history characteristics. In birds, the mechanisms […]

ANGIELCZYK, K.D.*; ROOPNARINE, P.D.; California Academy of Sciences; California Academy of Sciences: Morphological integration and modularity in the plastron of Emys marmorata (Testudines, Emydidae) Several recent studies have used geometric morphometrics to examine morphological integration and modularity, but in most cases the methods used required the potentially interacting modules to be defined a priori. Here […]

NASSAR, P.N.*; JENKINS, F.A., Jr.; Univ. of Pennsylvania; Harvard Univ.: Kinematic analysis of the thoracic cage in guinea fowl (Numida meleagris) during terrestrial locomotion Running guinea fowl (Numida meleagris) entrain their ventilation with their stride using a variety of breaths : stride ratios. The kinematics of the thoracoabdominal skeleton during locomotion are still mostly unknown, […]

KELLY, S.A.*; GARLAND, T., Jr.; Univ. of Calif., Riverside: Experimental Evolution and Phenotypic Plasticity of Hindlimb Bones in High-Activity House Mice A primary factor in the acquisition and maintenance of vertebrate skeletal mass and strength is mechanical loading. Studies of rodents have generally found that both forced and voluntary chronic exercise causes increased hindlimb bone […]

CURTIN, A.J.; ZUG, G.R.; AVERY, H.W.; SPOTILA, J.R.; Drexel University; Natl Museum Natural History, Smithsonian Institution; Drexel University; Drexel University: Bone Growth Patterns as Indicators of Life History Parameters in Desert Tortoise (Gopherus agassizii) Populations Ecological constraints influence bone growth strategies, and thus life history strategies, in a wide variety of amphibians and reptiles, however […]

GUGLIELMO, CG*; PRICE, ER; HAYS, QR; Univ. of Montana; Univ. of Montana; Univ. of Montana: The effects of diet macronutrient composition on fuel selection during exercise in a migratory bird Dendroica coronata In mammals diet macronutrient composition affects exercise fuel utilization and endurance performance. High carbohydrate diets used by marathon athletes enhance glycogen utilization, high […]