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Publications

These publications showcase the significant science conducted in our Science Centers.

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Gas supersaturation in surface waters of aquaculture ponds Gas supersaturation in surface waters of aquaculture ponds

During the 1988 and 1989 growing seasons, dissolved gas pressures were measured in 0·04 ha to 0·06 ha earthen ponds (n = 17) used to produce channel catfish or bluegill sunfish, both with and without supplemental aeration. Surface waters in early morning hours (0630 to 0830 h) were typically saturated with nitrogen (N2) and argon (Ar), undersaturated with dissolved oxygen (DO), and...
Authors
Claude E. Boyd, Barnaby J. Watten, V. Goubier, R. Wu

Plasma chloride and gill epithelial response of channel catfish to infection with Ichthyophthirius multifillis Plasma chloride and gill epithelial response of channel catfish to infection with Ichthyophthirius multifillis

Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per gill filament during days 1–5 PE and increased to 2.1 at...
Authors
M. S. Ewing, M.C. Black, V. S. Blazer, K. M. Kocan

Short-term cold storage of Atlantic sturgeon sperm Short-term cold storage of Atlantic sturgeon sperm

Short‐term cold storage of fish sperm with oxygen, an established fisheries technique, was successfully used to preserve milt from Atlantic sturgeon (Acipenser oxyrhynchus oxyrhynchus). All milt samples stored for 5 d on ice and replenished daily with oxygen retained at least 80% motility and at least 99% viability. One sample exhibited 40% motility after 17 d. For management personnel...
Authors
M. N. DiLauro, W. F. Krise, M. A. Hendrix, S.E. Baker

Survival rates of American woodcock wintering along the Atlantic coast Survival rates of American woodcock wintering along the Atlantic coast

Because American woodcock (Scolopax minor) populations have been declining, we attached radio transmitters to woodcock at coastal plain sites to determine if survival during winter was involved in the decline. Sites were in Georgia (1982-84, 1989-92), South Carolina (1988-89), and Virginia (1991-92). Survival rates were not different between age or sex classes. Survival rates differed (P...
Authors
David G. Krementz, John T. Seginak, David R. Smith, Grey W. Pendleton

Relationship between resistance of salmonids to furunculosis and recovery of Aeromonas salmonicida from external mucus Relationship between resistance of salmonids to furunculosis and recovery of Aeromonas salmonicida from external mucus

Fish were sampled at the Ed Weed State Fish Hatchery (South Hero, Vermont, USA) in September 1992. Aeromonas salmonicida was common, with concentrations as high as 105 to 107 colony-forming units per gram of mucus, and readily recovered from most mucus samples obtained from furunculosis-sensitive populations of brook trout (Salvelinus fontinalis), lake trout (Salvelinus namaycush), and...
Authors
R. C. Cipriano, L.A. Ford, T.E. Jones
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