Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 6 of 6

Full-Text Articles in Life Sciences

Evaluation Of Fixed Gear For The Capture Of Summer Flounder In Coastal Waters Of Virginia, Robert A. Fisher, David Rudders Jun 1999

Evaluation Of Fixed Gear For The Capture Of Summer Flounder In Coastal Waters Of Virginia, Robert A. Fisher, David Rudders

Reports

No abstract provided.


Juvenile Fish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Volume 1998, Patrick J. Geer Jun 1999

Juvenile Fish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Volume 1998, Patrick J. Geer

Reports

The Virginia Institute of Marine Science (VIMS) has conducted a trawl survey dating back to 1955. Over the years methods and objectives have varied according to funding sources and state and/or federal mandates.· The present thmst of the program is to provide juvenile indices of relative abundance for recreationally, commercially, and ecologically important fish and invertebrates. These measures of juvenile abundance are widely used as a key element in the management of the Atlantic States' coastal fishery resources. Estimates of juveniles (age-0) have proven to be a reliable and early indicator offuture year-class strength. A review of previously available indices …


Results Of Modifications To Sea Scallop Dredge Twine Tops To Facilitate The Reduction Of Finfish Bycatch: Georges Bank Closed Area Ii Experimental Fishery September-October 1998, William D. Dupaul, David B. Rudders, David Kerstetter Mar 1999

Results Of Modifications To Sea Scallop Dredge Twine Tops To Facilitate The Reduction Of Finfish Bycatch: Georges Bank Closed Area Ii Experimental Fishery September-October 1998, William D. Dupaul, David B. Rudders, David Kerstetter

Reports

No abstract provided.


Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. Ii. Salinity Effects, Michelle C. Paraso, Susan E. Ford, Eric N. Powell, Eileen E. Hofmann, John M. Klinck Jan 1999

Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. Ii. Salinity Effects, Michelle C. Paraso, Susan E. Ford, Eric N. Powell, Eileen E. Hofmann, John M. Klinck

CCPO Publications

An oyster population model coupled with a model for Haplosporidium nelsoni, the causative agent of the oyster disease MSX, was used with salinity time-series constructed from Delaware River flow measurements to study environmentally-induced variations in the annual cycle of this disease in Delaware Bay oyster populations. Model simulations for the lower Bay (high salinity) sire reproduced the annual cycle observed in lower Delaware Bay. Simulations at both upper Bay (low salinity) and lower Bay sites produced prevalences and intensities that were consistent with field observations. At all sites, low freshwater discharge resulted in increased disease levels, whereas high freshwater …


Prevalence Of Enzootic Bovine Leukosis In The South Marmara Region And Observations Of Some Management Practices, Hasan Batmaz, K. Tayfun Çarli, Ayşi̇n Şen, Engi̇n Kennerman, Ahmet Mi̇nbay, Zeki̇ Yilmaz, Vi̇ldan Caner, Can Baklaci Jan 1999

Prevalence Of Enzootic Bovine Leukosis In The South Marmara Region And Observations Of Some Management Practices, Hasan Batmaz, K. Tayfun Çarli, Ayşi̇n Şen, Engi̇n Kennerman, Ahmet Mi̇nbay, Zeki̇ Yilmaz, Vi̇ldan Caner, Can Baklaci

Turkish Journal of Veterinary & Animal Sciences

Seven hundred seventeen cattle, over the age of six months in the South Marmara Region (Bursa, Balıkesir and Çanakkale) were tested for the presence of Bovine Leukemia Virus (BLV)-antibody with ELISA.Blood and milk samples were taken from 362 and 355 cattle, respectively. Totally, sixty-nine cattle (9.62%) were found to be carriers of antibodies against BLV-gp 51 antigen.The BLV infection rate was found to be 13.25% and 5.91% in the sera and milk samples tested, respectively. The infection rate were determined to be 14.19 % in Bursa and 3.52 % in Balıkesir, but BLV seropositive cattle were not found in Çanakkale. …


Exploratory Field Evaluation Of Hook-Release Mortality In Tautog (Tautoga Onitis) In Lower Chesapeake Bay, Virginia, John A. Lucy, Michael D. Arendt Jan 1999

Exploratory Field Evaluation Of Hook-Release Mortality In Tautog (Tautoga Onitis) In Lower Chesapeake Bay, Virginia, John A. Lucy, Michael D. Arendt

Reports

In April 1996, the Atlantic States Marine Fisheries Commission approved a Tautog Fishery Management Plan (FMP) requiring states to systematically adopt a 14 in. (356 mm) TL minimum size limit. Release-mortality was assumed to be 25%. Between October and December 1997-1998, 299 tautog (235-520 mm TL; 9-20 in.) were caught using angling gear to estimate release mortality in Virginia's tautog fishery. Fishing occurred at shallow (3-10 m; 10-33 ft.) and deep (12-17 m; 39-56 ft.) water depths at temperatures between 9-l 8°C ( 48-64°F). Tautog were tagged, accumulated in aerated livewells, then returned to depth of capture in galvanized wire …