Meeting Abstract 40.6  Friday, Jan. 4  Functional diversification within and between muscle synergists during locomotion HIGHAM, T.E.*; BIEWENER, A.A.; WAKELING, J.M.; Harvard University; Harvard University; Simon Fraser University thigham@fas.harvard.edu Locomotion arises from the complex and coordinated function of limb muscles. Yet muscle function is dynamic over the course of a single stride, and between strides for animals […]

Meeting Abstract 40.4  Friday, Jan. 4  Effects of speed on muscle function of the triceps brachii in goats CARROLL, Andrew M.*; BIEWENER, Andrew A.; Concord Field Station, Harvard University; Concord Field Station, Harvard University acarroll@oeb.harvard.edu Distal limb muscles primarily function to generate force in steady running, allowing tendons to absorb and return work. Proximal limb muscles tend […]

Meeting Abstract 40.3  Friday, Jan. 4  Direct Manipulation of Extensor Muscle Phase Affects Leg Swing Trajectory, Foot Placement and Turning Dynamics in a Running Insect MULLENS, CH*; SPONBERG, S; FULL, RJ; Univ. of California, Berkeley cmullens@berkeley.edu Real time rewriting of the motor code to a muscle can reveal its causal effects on individual leg and whole body […]

Meeting Abstract 40.5  Friday, Jan. 4  Determining Neuromechanical Control Architecture Using Kinematic Phase Response to Perturbations REVZEN, S.*; BERNS, M.S.; KODITSCHEK, D.E.; FULL, R.J.; U. Cal. Berkeley; U. Cal. Berkeley; U. Penn. Philadelphia; U. Cal. Berkeley shrevz@berkeley.edu We define several neuromechanical control architectures that represent rhythmic motion. The first class is a mass-spring system interacting with the […]

Meeting Abstract 40.1  Monday, Jan. 5  Stingray Swimming in 3D: Pectoral fin locomotion BLEVINS, E.*; LAUDER, G.V.; Harvard University; Harvard University eblevins@fas.harvard.edu Stingrays swim by undulating their expanded pectoral fins, passing a propulsive wave from anterior to posterior. Basic 2D waveforms have been described for some species, but we have shown that the extreme flexibility of stingray […]

Meeting Abstract 40.6  Monday, Jan. 5  Paired fin-based locomotion in the lungfish KING, HM*; HALE, ME; Univ. Chicago; Univ. Chicago hking@uchicago.edu Lungfish are one of only two extant non-tetrapod sarcopterygian taxa, the other being coelacanths, and are of interest to biologists from anatomical, physiological and evolutionary perspectives. Despite this, little is known of their locomotion, particularly locomotion […]

Meeting Abstract 40.2  Monday, Jan. 5  Interspecific variation of pectoral fin morphology of surfperches (Embiotocidae) along Central California PERLMAN, B.M.*; FERRY-GRAHAM, L.A.; Moss Landing Marine Laboratories; Moss Landing Marine Laboratories bperlman@mlml.calstate.edu Embiotocids are a groups of near-shore fishes that overlap considerably in their distributions. As a result, they are thought to partition themselves into relatively well-defined habitats. […]

Meeting Abstract 40.5  Monday, Jan. 5  Changes in Wingstroke Kinematics Associated with an Increase in Swimming Speed in a Pteropod Mollusk, Clione limacina SZYMIK, Brett G*; SATTERLIE, Richard A; Eastern Connecticut State University; University of North Carolina Wilmington szymikb@easternct.edu In order to produce useful movement, all locomotory systems must manage the interface between the body and the […]

Meeting Abstract 40.4  Monday, Jan. 5  Biorobotic analyses of fish fin function TANGORRA, J. T.; GOTTLIEB, J.; ESPOSITO, C.; LAUDER, G. V.*; Drexel University; Drexel University; Drexel University; Harvard University glauder@oeb.harvard.edu A hallmark of aquatic propulsion in bony fishes is the use of multiple control surfaces to modulate locomotor forces and body position. Studying the in vivo […]

Meeting Abstract 40.3  Monday, Jan. 5  A New Twist on Bending: Properties of the Pectoral Fin Rays of the Benthic Longhorn Sculpin, Myoxocephalus octodecimspinosus. TAFT, Natalia K.; University of Massachusetts Amherst natashak@bio.umass.edu Many benthic fishes use their pectoral fins for substrate contact, which requires a combination of stiffness for weight bearing and flexibility for gripping the substrate. […]