LABARBERA, M. : Physical constraints in scallop swimming: take-off and swimming mechanics Take-off from the substrate and swimming were recorded for the cold-temperate scallops Chlamys hastata (N=10), C. rubida (N=22), and Crassodoma gigantea (N=7) and the warm-temperate Argopecten irradians (N=43) using high speed video. The Chlamys species and Argopecten swim throughout their lives, but Crassodoma […]

Thomas, F.I.M.; Bolton, T.F.: Mechanical forces imposed on echinoid eggs during spawning: mitigation of force by fibrous networks within egg extracellular layers Eggs of echinoids are exposed to mechanical forces during spawning. The magnitude of these forces depends on the properties of the eggs and the relative dimensions of the egg and gonopores. Recent evidence […]

MOORE,A.M.F.*; CHIU,H.; LAWRENCE,B.A.: Mechanical Characterization of Egg Case Silk in the Black Widow Spider (Latrodectus hesperus) Silk from egg case of the black widow spider (Latrodectus hesperus) differs in amino acid composition from the animal’s dragline silk. Because the primary function of an egg case is non-load bearing, we expected that the molecular differences in […]

SHERRARD, K.M.: Limits to early juvenile suspension feeding performance in sea squirts Post-metamorphic marine invertebrates are maximally different from adults in size, though often similar to them in morphology and behavior. How does small size affect early juvenile performance? Ascidians, as sessile suspension feeders, provide a convenient system in which to investigate this question. In […]

PRATT, M.C.: Growth and survival of an erect and encrusting bryozoan in different flow habitats Bryozoans are active filter feeding invertebrates that can exhibit a wide variety of different colonial growth forms. These growth forms can roughly be divided into species that are erect or encrusting. I compared the effects of hydrodynamics on the growth […]

Koehl, M.* A. R. *; Hadfield, M.G.; Cooper, T.; Reidenbach, M.A.; Koseff, J.R.: Can Larvae of Benthic Animals Use Dissolved Chemical Cues in Wave-Driven Flow? Can chemical cues in the water affect the settlement of larvae of benthic marine invertebrates in habitats subjected to the wave-driven water flow that characterizes many coastal habitats? We addressed […]

AHN, A.N.: Using in vivo stimulation and strain conditions to explain how two muscles function differently under identical conditions Even when experiencing identical strain and stimulation conditions, two leg muscles of the cockroach, Blaberus discoidalis, function differently. Both muscles are innervated by the same, single excitatory motor neuron, extend a single degree-of-freedom joint, and have […]

SRYGLEY, R.B.: Locomotor Mimicry among Passion-vine Butterflies Heliconius With regard to prey motion, the evolution of mimicry has been investigated in three areas: 1) locomotor mimicry, 2) anti-apostatic selection, and 3) escape mimicry. Locomotor mimicry is the similarity in motion of two distantly-related prey species. Because of evolutionary convergence in key morphological features that are […]

KIRKTON, S.D.*; HARRISON, J.F.: Effects of Allometric Growth on Oxygen Sensitivity and Jumping Performance in the American Locust Body size changes within instars and across the lives of insects could have significant respiratory and locomotory consequences because of possible problems with oxygen delivery in larger insects. We investigated the effect of across and within instar […]

Jindrich, D. L.*; Full, R. J.: Dynamic Stabilization of Rapid Hexapodal Locomotion Mechanical properties of muscles, connective tissues, and skeletal elements contribute to reducing energy costs, but can also simplify the control of rapid locomotion in animals. Passive mechanical behavior of the musculo-skeletal system may play a role in stability. Rapidly acting, musculo-skeletal ‘preflexes’ have […]