HANCOCK, J.A.*; BIKNEVICIUS, A.R.; STEVENS, N.J.; Ohio University, Athens; Ohio University, Athens; Ohio University, Athens: Head movements and terrestrial locomotion in tinamous (Eudromia elegans) Since the first photographic analysis of the fore-aft movement of the head in birds by Dunlap and Mowrer (1930), it has been known that the movement consists of a thrust phase […]

GOLDMAN, D.I.*; FULL, R.J.; University of California, Berkeley: Dynamics of Rapid Vertical Climbing in Hexapods A general model for rapid, dynamic legged climbing is emerging. Despite differences in morphology, the single leg ground reaction force patterns of climbing cockroaches were remarkably similar to that discovered in geckos. We measured these forces in the cockroach Blaberus […]

COWAN, N.; LEE, J.; FULL, R.J.; Johns Hopkins Univ.; Univ. of California, Berkeley: Dynamical control of antennal wall following in the American cockroach During rapid locomotion, the antenna of a cockroach, Periplaneta americana , transduces contact and strain stimuli to neural impulses. These impulses are used for locomotion control, enabling the cockroach to execute rapid […]

DUDEK, DM; GOLDMAN, DI; FULL, RJ; Univ. of California, Berkeley: A Hysteretic Model Predicts a Biological Structure�s Response to Perturbations: A Test Case Using Insect Legs Biological structures are often modeled using a linear spring (k) and viscous damper (c) in parallel (Voigt model). This model is commonly used because it is linear and analytical […]

PRATT, M.C.; Bowdoin College, Brunswick, ME: Will an opportunistic invasive bryozoan displace or coexist with other epiphytic bryozoans in the Gulf of Maine? The bryozoan Membranipora membranacea was introduced into the Gulf of Maine in 1987 and within two years became the dominant epiphyte on kelps. While we know that Membranipora can increase the likelihood […]

CASPER, AF*; JOHNSON, LE; University of South Florida St. Petersburg: Patterns of microevolution and displacement in a rapidly expanding species: Insights from comparative physiological ecology of zebra and quagga mussels This research explores whether a contiguous population of adult zebra and quagga mussels (Dreissena polymorpha and D. bugensis) in a stable, divergent mosaic of river […]

WALLACE, B.P. *; SEMINOFF, J.A.; KILHAM, S.S.; SPOTILA, J.R.; DUTTON, P.H.; Duke University Marine Lab; NOAA-National Marine Fisheries Service, Southwest Science Fisheries Center; Drexel University; Drexel University ; NOAA-National Marine Fisheries Service, Southwest Science Fisheries Center: Leatherback turtles as oceanographic indicators: stable isotope analyses reveal a trophic dichotomy between ocean basins Oceanographic sampling is often […]

DUNBAR, M.B.; TOMASI, T.E.**; University of Regina; Missouri State University: Hibernation Energetics of Eastern Red Bats (Lasiurus borealis) Many bats use torpor to conserve energy during daily or seasonal periods of inactivity. Seasonal torpor (hibernation) allows bats to avoid thermoregulatory costs of extreme conditions. Unlike other temperate hibernating bats, eastern red bats (Lasiurus borealis) do […]

WELLS, S.L.*; MCCONAUGHA, J.R.; Old Dominion University; Old Dominion University: Fecundity and Reproductive Energetics in the Chesapeake Bay Blue Crab, Callinectes sapidus The blue crab, Callinectes sapidus, has historically been a major fishery in the Chesapeake Bay. Both fishery dependent and independent data indicate that the population declined abruptly in the mid-1990�s and has remained […]

Meeting Abstract 69.11  Jan. 7  modeling time-varying fluid forces on an anuran foot to determine the power requirements of the ankle joint during swimming RICHARDS, Christopher T*; BIEWENER, Andrew A; Harvard University richards@fas.harvard.edu During swimming, the anuran foot generates drag-based hydrodynamic power both by moving parallel to the direction of swimming (translation) and by pivoting about the […]