BURNETT, K.; ILIFF, S.; BURNETT, L.*: Chronic Sub-lethal Hypoxia Increases Susceptibility of Litopenaeus vannamei to Bacterial Challenge Mortality rates of the aquacultured shrimp Litopenaeus vannamei injected with Vibrio parahaemolyticus are significantly increased when the bacterial challenge is accompanied by an immediate shift from well-aerated water to sub-lethal hypoxia (acute hypoxia). A more realistic scenario is […]

Locklair, M.R.*; Glas, P.S.: Chitin Type Substances Associated With the Embryonic Coat of the Grass Shrimp, Palaemonetes Pugio The focus of this investigation is to determine if embryonic coat proteins are composed of chitin or chitin-type derivatives. The morphological changes in the embryonic coat were shown by Glas, et al., but the composition of the […]

WHEATLY, M.G.*; ZHANG, Z.; STINER, L.T.M.: Characterization and localization of crayfish Ca pump and exchanger. The crayfish molting cycle is used to study gene expression for membrane Ca translocating proteins specifically Plasma Membrane Ca ATPase (PMCA) and Na/Ca exchanger (NCX). Amino acid sequences deduced from cDNA sequences were used to design oligo-peptide antigens (15 mers […]

BACHMAN,G.C.: Changes in leukocyte counts in hibernators from spring through summer. At high elevations, hibernators such as Belding’s ground squirrels (Spermophilus beldingi) emerge through snow and are unable to forage for the first few weeks of spring. Potentially, these individuals face a trade-off between allocating limited energy and nutrients to re-establishing physiological function, and the […]

CROSSLEY, D. A.*; BAGATTO, B. P. ; HICKS, J. W.; ALTIMIRAS, J.: Changes in cardiovascular control mechanisms during the embryonic development of the American alligator, Alligator mississippiensis Several ectothermic vertebrates possess a unique cardiac morphology that provides the potential for differential perfusion of systemic and pulmonary vasculatures. The crocodilians represent one such group with the […]

WINSTEAD, C. J.*; CLAUSSEN, D. L.: Cardiorespiratory responses of the Asian prawn, Macrobrachium rosenbergii to temperature and hypoxia Macrobrachium rosenbergii may experience thermal and hypoxic stresses during their commercial cultivation and during transport of stock or post-harvest animals. We used noninvasive methods to monitor cardiac responses, scaphognathite beating, and activity of juvenile and adult animals […]

REIBER, C.L.*; HARPER, S.L.; NEWELL, C; LAUNDRIE, N: Cardiac regulation in the grass shrimp (Palaemonetes pugio): larvae to adult. Grass shrimp exhibit an anamorphic developmental pattern where successive larval stages show only minor anatomical changes. Larval shrimp exposed to stepwise reductions in water oxygen (150, 100, 75, 50 and 25 mmHg O2)were monitored for cardiac […]

Estes, A.M.*; Kempf, S.C.; Henry, R.P.: Carbonic anhydrase induction by zooxanthellae in Cassiopea xamachana Endosymbiotic dinoflagellates of cnidarians are encased in multiple membranes, causing difficulty in acquiring inorganic carbon for photosynthesis. Host carbonic anhydrase(CA), which catalyses the reversible dehydration of HCO3-, can supply endosymbionts with unlimited CO2 by accessing the large HCO3– pool in seawater. […]

STEGALL, V.S.*; KINSEY, S.A.; MCLELLAN, W.A.; DILLAMAN, R.M.; PABST, D.A.: Biochemical changes in locomotor muscle of harbor porpoise, Phocoena phocoena, during starvation. A primary locomotor muscle (m. longissimus) of stranded, emaciated porpoises was compared to that of robust porpoises killed in fishing operations. We previously demonstrated that emaciated porpoises displayed decreases in body mass, axial […]

HOLT, S.M.; KINSEY, S.T.*: Arginine kinase flux in osmoregulating muscle cells We examined arginine kinase (AK) flux as a function of intracellular osmogregulatory state in locomotor muscle from blue crab, Callinectes sapidus. Phosphorus nuclear magnetic resonance (NMR) saturation transfer experiments were applied to measure AK flux ex vivo in isolated, superfused swimming leg muscle. Blue […]