Watts, P.*; Fish, F.: Fluid Dynamic Role of Tubercles on Humpback Whale Flippers Tubercles are leading edge protrusions on the flippers of humpback whales (Megaptera novaeangliae). Humpback whales are the only baleen whales that capture prey through routine tight maneuvers. We investigated the fluid dynamic benefits of tubercles with regard to force production by the […]

ROMMEL, S.A.*; PABST, D.A.; MCLELLAN, W.A.: Convergent evolution in the vascular systems of three marine mammals Conservation of thermal energy in aquatic mammals is essential for the maintenance of high core temperatures in a heat conducting aquatic environment. Seals, dolphins, and manatees have gross morphological adaptations such as large size, modification of appendages, and blubber […]

THOMPSON, J.T.: The ontogeny of squid mantle structure and function The mantle of cephalopod molluscs is composed of a complicated arrangement of several different muscle and connective tissue components. Much is known about mantle structure and function in adult squid. However, significant alterations in mantle organization occur during ontogeny that may entail significant changes in […]

BARKER, J.U.; ASHLEY-ROSS, M.A.*: The effect of fiber type heterogeneity on work and power output of hindlimb muscles of the tiger salamander Most vertebrate muscles are composed of a mixture of fiber types. However, study of the mechanical performance of muscle has concentrated on homogeneous bundles of muscle fibers. Muscles in the hindlimb of the […]

Wyneken, J.*; Steinberg, F.: The Use of CT and Functional MRI to Examine Cardiopulmonary Structure and Function in Ecologically Distinct Species of Turtles. Sea turtles are secondarily aquatic are migratory specialists. As such, they possess suites of morphological, behavioral and physiological adaptations for migratory life. These include unique sets of cardiopulmonary structures that may serve […]

HOOGE, M.D.*; TYLER, S.: Non-muscle actin in sclerotic components of the female reproductive system of acoel turbellarians The seminal bursa of many acoel turbellarians is associated with an insemination canal, called a mouthpiece or nozzle, that appears sclerotized–that is, stiff and refractile by light microscopy. The mouthpiece is composed of stacks of ring-shaped cells and […]

CAVEY, M.J.*; WILKENS, J.L.: F-actin in the Amuscular Arteries of the American Lobster Seven vessels leave the heart of the lobster Homarus americanus: the unpaired anterior median artery, sternal artery, and dorsal abdominal artery and the paired anterior lateral arteries and hepatic arteries. Superficially, these arteries have a common, relatively-simple organization, consisting of an elastic […]

SCHAACK, S.*; CHAPMAN, L.J.: Cascading effects of hypoxia on the functional morphology, ecology, and diversification of an African cyprinid. Adaptive change in one character may affect associated, but functionally unrelated, characters in an adaptive or non-adaptive way. For example, in some fish species, individuals living in low oxygen environments have larger gills than conspecifics living […]

HOLBERTON,R.*; WILSON,C.M.; SIMS,C.; CASH, W.B.: The Role of Corticosterone and the Effects of its Inhibition During the Development of Migratory Condition in Dark-eyed Juncos. To understand corticosterone’s role in the development of migratory feeding and fattening, dexamethasone (DXM) was used to inhibit an increase in baseline corticosterone often observed during migration. Dark-eyed juncos (Junco hyemalis) […]

WILSON, C.M.*; HOLBERTON, R.L.: The Endocrine Basis for Trade-offs between Immediate Survival and Reproductive Success in Arctic- and Temperate-breeding Yellow Warblers While temperate breeding birds can renest or produce more than one successful clutch each year, Arctic-breeders are unlikely to raise more than one clutch annually due to shorter breeding seasons and unpredictable weather. Despite […]