Animal Sciences Commons^™

Marine Resource Bulletin Vol. 11, No. 5, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

No abstract provided.

Marine Resource Bulletin Vol. 11, No. 4, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

No abstract provided.

Tb89: Motor And Elective Activity Of The Duodenum Of Broilers, C. Mba-Mezoui, F. H. Bird, C. B. Chawan

Technical Bulletins

Recordings of pressure changes and electrical activity from the proximal small intestine of seven to eight-week-old unanesthetized chickens were made with chronically implanted transducers. The recordings were used to quantitate and determine the relationships among basic electric rhythm (BER), spike potentials (SP), and intestinal contractions (IC) of the duodenum. The omnipresence of the BER was demonstrated. SP were recorded whenever IC were detected. SP numbers and amplitudes were directly related to the strength of IC. Acetylcholine caused a general increase in the number and amplitude of both SP and IC. Epinephrine completely abolished both SP and IC. The results suggest …

Marine Resource Bulletin Vol. 11, No. 3, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

No abstract provided.

1979 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International Agricultural Exposition Catalogs

No abstract provided.

Marine Resource Bulletin Vol. 11, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

No abstract provided.

Kepone® Residues In Chesapeake Bay Biota, M. E. Bender, R. J. Huggett, W. J. Hargis Jr.

VIMS Books and Book Chapters

Oysters from the James displayed variations in Kepone residue levels related to water temperature and their spawning cycle. Oyster depuralion rates were related to temperature. In summer the "biological half. life" of Kepone in oysters was about one week, while during the winter about 40 days were required for residue levels to decline by 50 per cent. Residues in blue crabs varied as a function of sex, males having considerably higher residues than females. Fin fish levels from the James varied greatly, with residue levels being dependent on species and length of residence for migratory fishes .. Average Kepone residues …

Coliform Depuration Of Chesapeake Bay Oysters, Dexter S. Haven, Frank O. Perkins, Reinaldo Morales-Alamo, Martha W. Rhodes

VIMS Books and Book Chapters

Oysters contaminated in nature depurated fecal coliforms to levels below 50/100 g in 48 hr over a wide range of environmental conditions typical of the lower Chesapeake Bay region. Temperature was found to be the most crilical environmental factor with conditions below 10-12°C having the potential of inhibiting depuration. Coliform clearance did not appear to be correlated with pumping rate or biodeposition activity of oysters. Oysters infected with the pathogens Dermocystidium marinum and Minchinia nelsoni (MSX) depurated as rapidly as uninfected ones. Meat quality and size of oysters likewise did not affect depuration.

Four commercial-size tanks of different designs were …

Marine Resource Bulletin Vol. 11, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

No abstract provided.

Freshwater And Marine Fishes, Robert E. Jenkins

VIMS Books and Book Chapters

The current list of freshwater fishes known from Virginia stands at 206 species, including 10 that are diadromous and 4 others ranked as freshwater-estuarine. Eight of the freshwater and one of the freshwater-estuarine species were introduced to the state. Several additional strictly freshwater fishes are expected to be discovered. The Virginia freshwater ichthyofauna is relatively rich in species compared with most other states. For example, Maryland and Delaware together have 99 species (Lee et aZ., 1976), West Virginia 151 (Denoncourt et aZ., 1975), Kentucky 201 (Clay, 1975), and North Carolina 195 (Menhinick et aZ., 1974). Some of these totals reflect …

Proceedings Of Workshop On Soft Shell Blue Crabs : September 22, 1979, Charleston, South Carolina, David M. Cupka, Willard A. Van Engel

VIMS Books and Book Chapters

The Workshop on Soft Shell Blue Crabs was held on September 22, 1979 at the Marine Resources Center of the South Carolina Wildlife and Marine Resources Department in Charleston, South Carolina.

The purposes of the workshop were to describe current research and development activities relative to soft shell blue crabs in the Coastal Plains Region; to review existing laws and regulations in regards to soft shell crab fisheries and shedding operations; and to discuss methods for harvesting, handling, shedding and marketing soft shell blue crabs.