VAN CLEEFF, J.*; BLACHE, D.; MARTIN, G.: Early castration of male emus (Dromaius novaehollandiae) reduces their feed efficiency and attenuates vernal fattening without impairing appetite The emu responds to increasing photoperiod with an increase in appetite and fat deposition. This response is normally delayed until breeding season hormones, stimulated by short days, have been cleared […]

MAURES, T.*; DUAN, C. : EXPRESSION OF INSULIN-LIKE GROWTH FACTOR BINDING PROTEIN-1 IN ZEBRAFISH Regulation of growth factor and hormone action by soluble hormone binding proteins has emerged as a common theme for a variety of peptides including insulin-like growth factors (IGFs). Among the best studied hormone binding proteins are members of the IGF binding […]

GOLDMAN, J.A.: The effect of the free water surface on animals that jump out of water As an animal such as a dolphin, fish, or penguin jumps out of water, it passes through a complex hydrodynamic regime where the viscous, inertial, and gravitational forces act on its body in an uncertain way. I explored two […]

HOLLIDAY, C.M.; RIDGLEY, R.C.; SEDLMAYR, J.C.; WITMER, L.M.: The Articular Cartilage of Extant Archosaur Limb Bones: Implications for Dinosaur Functional Morphology and Allometry Extinct archosaurs show variably ossified limb bones implying differing amounts of unpreserved articular cartilage. This “lost anatomy” is underappreciated such that the ends of bones are often considered as joint surfaces, potentially […]

KORFF, W.L.: Slip slidin’ away: Comparative kinematics of two sand dwelling lizard species Convergence of morphological characters in similar environments is often cited as an indicator of morphological adaptation. Comparative studies that are designed to elucidate relationships between morphology and performance can strengthen conclusions of adaptive convergence that are based solely on correlation. Lizards with […]

HSIEH, S.T.*; LAUDER, G.V.: Running on water: quantitative flow visualization of basilisk lizard locomotion Previous work on water surface locomotion in basilisk lizards has focused on limb kinematics and mechanical models of force generation. Nothing is known about the effect of limb motion on subsurface water flow and the orientation of forces resulting from limb […]

USHERWOOD, J.R.; LARSON, S.G.; BERTRAM, J.E.A.: Mechanisms of force and power production in unsteady ricochetal brachiation Force production and kinematics during ricochetal brachiation of white handed gibbons Hylabates lar were recorded. Both the mechanisms of force production, and power input, may be inferred for accelerating and decelerating brachiation by combining force data with kinematics. Examples […]

REILLY, Stephen M.*; WILLEY, Jeffrey S.; BIKNEVICIUS, Audrone R.: Locomotory dymanics of a Semi-erect posture: Correlating kinematics with kinetics in walking alligators. Ground reaction forces, whole body mechanics and limb kinematics were quantified for alligators as several subjects walked over force platforms. Kinematic and kinetic analyses will be brought together to describe the dynamic relationships […]

KOJESZEWSKI, T. B. *; FISH, F. E.; West Chester University; West Chester University: Swimming of the Florida manatee: Mechanics and efficiency of an aquatic grazer Swimming performance is associated with the foraging ecology of aquatic animals. Marine mammal predators may be characterized based on prey capture techniques that affects how efficient the animal needs to […]

HAMILTON, J.L.; Brown University, Providence, RI: Surface descent in Thick-billed murres (Uria lomvia): Are wings enough? Thick-billed murres (Uria lomvia; Family Alcidae) are able to dive to depths exceeding 200 meters. Murres are positively buoyant and, thus, must overcome their own buoyancy when diving. My study investigates how murres use their limbs as they descend […]