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Full-Text Articles in Life Sciences
Abstracts Of Papers Presented At The 16th International Pectinid Workshop Halifax, Nova Scotia, Canada May 11–18, 2007, G. Jay Parsons
Abstracts Of Papers Presented At The 16th International Pectinid Workshop Halifax, Nova Scotia, Canada May 11–18, 2007, G. Jay Parsons
VIMS Articles
VIMS Author Contributions: Scallop dredge selectivity: A review of sequential ring size increases from 1994 to 2003 in the US sea scallop fishery By: DuPaul, William D.; Rudders, David B. Pages: 1307-1308 Industry-based sea scallop dredge surveys in support of rotational area management By: Rudders, B.; DuPaul, William D. Pages: 1337-1338 Size-selectivity of the commercial northwest Atlantic sea scallop (Placopecten magellanicus) dredge By: Yochum, Noelle; DuPaul, William D. Pages: 1355-1355
Specific Identification Of Western Atlantic Ocean Scombrids Using Mitochondrial Dna Cytochrome C Oxidase Subunit I (Coi) Gene Region Sequences, Ma Paine, Jan Mcdowell, John E. Graves
Specific Identification Of Western Atlantic Ocean Scombrids Using Mitochondrial Dna Cytochrome C Oxidase Subunit I (Coi) Gene Region Sequences, Ma Paine, Jan Mcdowell, John E. Graves
VIMS Articles
Identification of scombrids (tunas, mackerels, bonitos, etc.) is difficult when morphological characters are ambiguous or missing, such as with early life history stages or tissues found in the stomachs of predators. The mitochondrial cytochrome c oxidase subunit I (COI) gene region was evaluated as a molecular marker for the specific identification of the 17 members of the family Scombridae common to the western Atlantic Ocean. A 950 base pair region in the COI gene was sequenced from up to 20 individuals of each species, and suites of nucleotide polymorphisms that unambiguously distinguish among these scombrid species were identified. A shorter …
Genetic Identity Of Yoy Bluefin Tuna From The Eastern And Western Atlantic Spawning Areas, J Carlsson, Jan Mcdowell, Jel Carlsson, John Graves
Genetic Identity Of Yoy Bluefin Tuna From The Eastern And Western Atlantic Spawning Areas, J Carlsson, Jan Mcdowell, Jel Carlsson, John Graves
VIMS Articles
We used 320 young-of-the-year (YOY) specimens of the highly migratory and overfished Atlantic bluefin tuna, Thunnus thynnus, Linnaeus 1758, to evaluate the hypothesis that Atlantic bluefin tuna comprises 2 stocks with spawning grounds in the Gulf of Mexico and in the Mediterranean Sea. Significant genetic differentiation at 8 nuclear microsatellite loci (F-ST = 0.0059, P = 0.0005) and at the mitochondrial control region (Phi(ST) = 0.0129, P = 0.0139) was detected among YOY Atlantic bluefin tuna captured on spawning grounds in the Gulf of Mexico (n = 40) versus the western (n = 255) and eastern (n = 25) basins …
Recent Additions Of Warmwater Fish Species To Chesapeake Bay, Aimee D. Halvorson
Recent Additions Of Warmwater Fish Species To Chesapeake Bay, Aimee D. Halvorson
VIMS Articles
During September 2004 and June 2005, the Virginia Institute of Marine Science (VIMS) Juvenile Fish and Blue Crab Trawl Survey collected specimens of three warmwater fish species uncommon to Chesapeake Bay. Captures of Trachinocephalus myop.s (Snakefish), Citharichthys Wfjc/'fj/^.v (Spotted WhifT'). and Mullus auratus {Red Goatfish)are the first substantiated records for these species from Chesapeake Bay. These captures also represent extensions in the documented geographic ranges of Snakefish and Spotted Whiff. Occurrences of multiple species heretofore rarely encountered in Chesapeake Bay warrant further attention in view of concerns regarding climate change and its effect on local marine faunas.
Correcting For Effective Area Fished In Fishery-Dependent Depletion Estimates Of Abundance And Capture Efficiency, Jf Walter, Jm Hoenig, T Gedamke
Correcting For Effective Area Fished In Fishery-Dependent Depletion Estimates Of Abundance And Capture Efficiency, Jf Walter, Jm Hoenig, T Gedamke
VIMS Articles
Depletion methods are widely used to estimate capture efficiency and abundance. However, they are highly dependent on the depletion area assumed. In open-ocean depletion studies, it is difficult to determine the true area of depletion. Satellite vessel monitoring systems (VMS) offer the potential to determine the area effectively fished. Observer-collected catch-and-effort data from the 1999 Atlantic sea scallop fishery in Georges Bank Closed Area II were used to obtain spatially-explicit DeLury depletion estimates of dredge efficiency and abundance, with corrections for fished area made using VMS data. Non-area-corrected efficiency estimates often had theoretically impossible values, indicating that the naively assumed …
Activity In The Pallial Nerve Of Knobbed (Busycon Carica) And Channeled (Busycotypus Canaliculatum) Whelks Recorded During Exposure Of The Osphradiurn To Odorant Solutions, Christopher Magel, Kristin Wakefield, Nancy Targett, Richard Brill
Activity In The Pallial Nerve Of Knobbed (Busycon Carica) And Channeled (Busycotypus Canaliculatum) Whelks Recorded During Exposure Of The Osphradiurn To Odorant Solutions, Christopher Magel, Kristin Wakefield, Nancy Targett, Richard Brill
VIMS Articles
Adult horseshoe crabs (Limulus polyphemus) are the preferred bait in the U.S. east coast whelk pot fishery, but their harvest is being restricted because of severe population declines in the Chesapeake and Delaware bays. To identify other baits, the activity in the pallial nerve of whelks was determined during exposure of the osphradium to odorant solutions prepared from horseshoe crab eggs, horseshoe crab hemolymph, and hard clam (Mercenaria mercenaria) tissue. All three elicited significant responses; bait based on them may provide an alternative to the use of adult horseshoe crabs, although extensive behavioral testing remains to be done. Channeled whelk …