RIFFELL, J.A.*; ZIMMER, R.K.; Univ. of California, Los Angeles; Univ. of California, Los Angeles: Sex and the single cell: The relationship between flow microenvironment, gamete traits and fertilization success. Fertilization rate is an important factor mediating the production of offspring and, hence, population dynamics. For marine organisms that broadcast their sperm and eggs into the […]

BUCHHOLZ, D.R.*; HSIA, V.; FU, L.; SHI, Y.-B.; National Institutes of Health, Bethesda: In-vivo molecular mechanisms of thyroid hormone receptor during frog metamorphosis Frog metamorphosis is an excellent model to study in-vivo roles of thyroid hormone receptor (TR). Exogenous thyroid hormone (T3) acts as an “on” switch in premetamorphic tadpoles to initiate hormone-induced changes in […]

LEE, W-K; FEZZAA, K; WESTNEAT, M; BETZ, O; DONOHUE, K; Argonne National Laboratory; Argonne National Laboratory; Field Museum of Natural History, Chicago; University of Kiel, Germany; Harvard University: Imaging applications of synchrotron radiation for biomechanics and morphology The advent of third generation hard x-ray synchrotron facilities have greatly enhanced research in many fields. In biology, […]

HALE, ME; KHEIRBEK, MA; PRINCE, VE; Univ. of Chicago; Univ. of Chicago; Univ. of Chicago: Hox gene misexpression generates functional neurons in zebrafish locomotor neural circuits. Startle behaviors of fishes are initiated by neurons with cell bodies in the hindbrain and axons that extend along the length of the spinal cord. Such neurons include the […]

CATTERFELD, GE; HOYT, DF; DUTTO, DJ; WICKLER, SJ; COGGER, EA; California State Polytechnic University, Pomona: Trotting at low vs. high speeds: different gait dynamics of fore- and hind limbs Statistical analysis of our previously reported ground reaction force (GRF) and stride parameter data from horses trotting from ca. 1.5-5.0 m/s identified some deviations in the […]

HOYT, DF; WICKLER, SJ; DUTTO, DJ; California State Polytechnic University, Pomona; California State Polytechnic University, Pomona; California State Polytechnic University, Pomona: The trot-gallop transition: insights from energetics, muscle function and biomechanics Recently, it was shown that the trot gallop transition occurs at a lower speed when going up an incline than on the level, but […]

BERTRAM, John E.A.; Florida State Univ., Tallahassee: The mechanics behind galloping in larger mammals: not what you would expect! Interpretation of the details of morphological form and functional strategies requires an understanding of the critical determinants influencing the performance of the system. In locomotion, substantial insight into the mechanics of a system can sometimes be […]

FRANZ, T.M.*; DEMES, B.; CARLSON, K.J.; Stony Brook University; Stony Brook University; Stony Brook University: The kinetics of leaping in strepsirrhine primates This study explores the forces associated with leaping in two primate species and how they compare to forces of nonprimate mammals performing similar tasks. Takeoff and landing forces were analyzed for two species […]

RAICHLEN, D.A.; University of Texas at Austin: The effects of distally distributed limb mass on quadrupedal locomotion The effects of limb mass distribution on the energetic costs of quadrupedalism are currently unclear. Although several researchers have predicted that animals with distally distributed limb mass should have higher energetic costs, Taylor et al. (1974) found that […]

BIKNEVICIUS, A.R.*; MULLINEAUX, D.R.; CLAYTON, H.M.; Ohio Univ.; Michigan State Univ.; Michigan State Univ.: Taking the walk for a run: Locomotor mechanics of lateral sequence singlefoot gaits. The locomotor mechanics of lateral sequence singlefoot gaits were investigated. Icelandic horses using a walk and a t�lt, often described as a “running walk”, were ridden to record […]