LEE, P.N.*; CALLAERTS, P.; HARTMANN, B.; FARFAN, C.; MARTINDALE, M.Q.; DE COUET, H.G.: Hox Gene Expression in the Sepiolid Squid, Euprymna scolopes Cephalopods represent a highly derived group within the Mollusca. They have evolved extensive alterations in the basic molluscan body plan, including a reduction or loss of the shell, novel recruitment of the mantle […]

WELCH, A.W.: How do parental genetic quality and genetic compatibility affect offspring growth in gray tree frogs? Females in many species discriminate among potential mates, and one benefit of mate choice can be enhanced genetic quality of offspring. Offspring genetic quality may be enhanced if a female selects a mate of high genetic quality or […]

CASHON, R/E; HUNT VON HERBING, I: Hemoglobin gelation in boreal fishes: adaptation to the cold? Recent studies of fish red blood cells found that a regular paracrystalline array of hemoglobin (Hb) tetamers formed under low oxygen conditions in 2 species of boreal fishes, Atlantic cod (Gadus morhua) and toadfish,(Opsanus tau). This phenomenon is termed hemoglobin […]

GUADAGNOLI, Jutta A.*; REIBER, Carl L.*: Hemodynamics of the grass shrimp P. Pugio under normoxic and hypoxic conditions We investigated the hemodynamics of the of the grass shrimp Palaemonetes pugio under normoxic and hypoxic conditions. In many larger decapod crustaceans such as crayfish, crabs and lobsters, exposure to progressive hypoxia results in a decrease in […]

BOURNE, G.B.: Hemodynamic properties of an open vascular bed Open circulatory systems differ from closed ones primarily in the nature of the microvasculature. The dynamics of fluid passage through closed systems are fairly well understood. We have less knowledge of fluid dynamics in open vascular beds. In this study, pressure-flow relationships were used to further […]

SCHAPKER, Heidi; BREITHAUPT, Thomas; SHURANOVA, Zhanna; BURMISTROV, Yuri; COOPER, Robin L.: Heart and Ventilatory Measures In Crayfish During Environmental Disturbances & Social Interactions Most animals assess the environment in which they live and alter their behavior according to various stimuli. As an observer, one looks for changes in the behavior of the animal which indicates […]

PELTIER, T.C.; BARBOZA, P.S.: Growth in the arctic: effects of sex and diet on muskoxen Muskoxen born in May must grow to survive their first winter from October until plants emerge in May-June. We predicted that growth of lean tissue is affected by dietary N and by sex because adult males are larger than females. […]

ELLERBY, D.J.*; MARSH, R.L.; CARR, J.A.: Gill muscle function in the horseshoe crab Limulus polyphemus Gas exchange in Limulus is carried out via five paired gill plates on the underside of the opisthosoma. During ventilation, slow rhythmical movements of the gill plates induce water flow through the gill lamellae. Rapid, high amplitude movements of the […]

FINKLER, M.S.*; STEYERMARK, A.C.; LANG, J.W.; JENKS, K.; SOTHERLAND, P.R.: Geographic variation in snapping turtle egg composition across a longitudinal transect. Snapping turtles (Chelydra serpentina) have an extensive range across North America, inhabiting aquatic habitats in diverse thermal and hydric climates. Although geographic variation in reproductive characters such as female size, clutch size, and egg […]

LOUIE , K.D.; KOEPFLI, K.P.; JACOBS, D.K.: Genetic Variation in the Eastern Pacific Bay Pipefish (Syngnathus leptorhynchus) The bay pipefish (Syngnathus leptorhynchus), inhabits estuaries along the eastern Pacific from Alaska to Baja California. This pipefish is elongate, slender, and cryptic in its protective eelgrass habitat. Fishes of this species are specialized because females deposit their […]