Courtland, H.W-.*; Wright, G. M.; DeMont, M. E.: Physical Properties of Noncollagenous Lamprey Cartilages Morphological and biochemical studies have demonstrated that lamprey cartilages are different from other vertebrate cartilages in that their major structural components lack collagen and elastin. Notable biochemical and morphological variations even suggest that a family of noncollagenous matrix proteins comprises the […]
Archives: Abstracts
In vivo shortening in the superfast tailshaker muscle of rattlesnakes
Moon, B.R.*; Urquhart, M.R.; Conley, K.E.: In vivo shortening in the superfast tailshaker muscle of rattlesnakes Sound-producing muscles typically contract at high frequencies with minimal shortening. The tailshaker muscle of western diamondback rattlesnakes (Crotalus atrox) contracts at frequencies of 20-100 Hz and has a constant energetic cost per twitch, but its extent of shortening is […]
Functional implications of asymmetrical feeding biomechanics in pleuronectiform fishes
FRANCIS, JR., A.W.*; TURINGAN, R.G.: Functional implications of asymmetrical feeding biomechanics in pleuronectiform fishes Flatfishes (Order Pleuronectiformes) differ from the generalized teleost morphology in that bilaterally symmetrical larvae metamorphose into bilaterally asymmetrical juveniles where one eye migrates to the opposite side of the head. The development of morphological asymmetry is expected to have profound consequences […]
Physical constraints in scallop swimming take-off and swimming mechanics
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 […]
Mechanical forces imposed on echinoid eggs during spawning mitigation of force by fibrous networks within egg extracellular layers
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 […]
Mechanical Characterization of Egg Case Silk in the Black Widow Spider (Latrodectus hesperus)
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 […]
Limits to early juvenile suspension feeding performance in sea squirts
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 […]
Growth and survival of an erect and encrusting bryozoan in different flow habitats
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 […]
Can Larvae of Benthic Animals Use Dissolved Chemical Cues in Wave-Driven Flow
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 […]
Using in vivo stimulation and strain conditions to explain how two muscles function differently under identical conditions
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 […]