Meeting Abstract 78-3  Monday, Jan. 6 08:30 – 08:45  Effects of Cell Morphology, Attachment to a Surface, and Colony Formation on the Hydrodynamic Performance of Choanoflagellates KOEHL, MAR*; NGUYEN, H; FAUCI, L; University of California, Berkeley; Trinity University; Tulane University cnidaria@berkeley.edu http://ib.berkeley.edu/labs/koehl Choanoflagellates, eukaryotes that are important predators on bacteria in aquatic ecosystems, share a common ancestor […]

Meeting Abstract 78-4  Monday, Jan. 6 08:45 – 09:00  Do aquatic paedomorphs converge in both morphology and performance across phylogeny in Spelerpini Salamanders? DARCY, HE*; ANDERSON, PSL; University of Illinois Urbana-Champaign; University of Illinois Urbana-Champaign hdarcy2@illinois.edu The lungless salamander tribe Spelerpini (Caudata:Plethodontidae) presents an opportunity to study the evolution of aquatic species that arose from terrestrial lineages […]

LIBBY, T.; MEIJER, K.; FULL, R.J.: Partioning Preflex And Reflex Contributions Toward Cockroach Leg Stability: A Simulation Study It has been hypothesized that animals use neural reflexes as well as the intrinsic stiffness and damping of the musculo-skeletal system (preflexes) to manage perturbations during rapid locomotion. Previously, we imposed perturbations or sinusoidal oscillations in the […]

DUDEK, DM; FULL, RJ: Leg Function in Running Insects: Resilience and Impedance of Legs Linked to a Body Studies of locomotion have shown that many terrestrial runners have the dynamics of a spring-mass system. Our previous work using isolated, rigidly fixed legs has shown that the cockroach hind limb, with its vertically oriented joint axes, […]

SRYGLEY, R.B.*; THOMAS, A.L.R.: Flow Visualizations with Free-flying Butterflies Reveal a Variety of Unconventional Lift-generating Mechanisms Flying insects generate very high lift forces- typically twice as much lift per unit wing area as conventional wings achieve- and sometimes an order of magnitude more. Three hypotheses compete to explain the mechanism insects use to generate these […]

KIRKTON, S.D.*; HARRISON, J.F.: Effects of Body Size Changes on Jumping Performance in the American Locust Allometric changes in body size during development can cause dramatic ecological and physiological consequences. In the American locust (Schistocerca americana) body mass increases continually during development, while the femur mass changes discontinuously — increasing only between instars. We investigated […]

PEATTIE, A M; GARCIA, M S; KUO, A D; WANG, PC; FULL, R J: DAMPING ESTIMATES IN INSECT LEGS INDICATE A ROLE IN CONTROL Experiments and theoretical models suggest that the remarkable stability observed in the death-head cockroach (Blaberus discoidalis) can reside in the preflexive dynamics of the musculo-skeletal system. To determine one parameter often […]

TU, M.S.*; DANIEL, T.L.: Cardiac-like behavior in an insect flight muscle. Despite the well-known length-dependence of muscle force, few studies have actually located the operating lengths of locomotor muscles on their isometric force-length relationships. A handful of studies in frogs, fish, birds and rabbits, suggest that force may be maximized by muscle shortening across the […]

Meeting Abstract 78.1  Sunday, Jan. 6  The Biomechanics of Fatal Mandibular Fracture: A Blunt Trauma Injury Observed in North Atlantic Right Whales Killed By Vessels. CAMPBELL-MALONE, R*; BALDWIN, KC; DECEW, JC; RAYMOND, JJ; MOORE, MJ; TSUKROV, I; Brown University; Univ. of New Hampshire; Univ. of New Hampshire; Univ. of New Hampshire; Woods Hole Oceanographic Institution; Univ. of […]

Meeting Abstract 78.4  Sunday, Jan. 6  Replicating failure of vertebrae and faces – a role for rapid prototyping SUMMERS, A.P.*; PORTER, M.E.; NAGLE, L.; CARRIER, D.R.; UC Irvine; UC Irvine; Tufts Univeristy; University of Utah asummers@uci.edu We have used a rapid prototyping system to model failure mechanics of complex biological structures with high repeatability and fidelity to […]