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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 …
Comparison Of Growth Rates Between Diploid Deby Eastern Oysters (Crassostrea Virginica, Gmelin 1791), Triploid Eastern Oysters, And Triploid Suminoe Oysters (C. Ariakensis, Fugita 1913), Juliana Harding
VIMS Articles
Oyster size and morphology affect individual oyster physiology, reproductive biology, and habitat production as well as population ecological services and availability for commercial harvest. Options for oyster restoration and fishery facilitation for eastern oyster (Crassostrea virginica) populations in the Chesapeake Bay include the use of disease resistant diploid eastern oysters (DEBY strain), triploid eastern oysters, and triploid Suminoe oysters (Crassostrea ariakensis) with the objective of providing a marketable product in a reasonable time frame. Shell height-at-age, growth in shell height in relation to environmental conditions, ontogenetic changes in morphology, and changes in biomass for groups of triploid Suminoe, triploid eastern, …
The Effects Of Female Size On Fecundity In A Large Marine Gastropod Rapana Venosa (Muricidae), Juliana M. Harding, Roger L. Mann, Catherine W. Kilduff
The Effects Of Female Size On Fecundity In A Large Marine Gastropod Rapana Venosa (Muricidae), Juliana M. Harding, Roger L. Mann, Catherine W. Kilduff
VIMS Articles
The life history strategy of the veined rapa whelk Rapana venosa, a temperate marine gastropod, includes generation times of 1 y, individual longevity of > 10 y, annual production of egg cases, and an adult size range of 40 to > 160 mm shell length (SL). This life history combined with the animal's generalist ecological preferences and broad physiological tolerances makes rapa whelks well suited for ecological success along a gradient of habitat and community types. Ballast water transport of veliger larvae across traditional zoogeographic boundaries has resulted in the establishment of invasive rapa whelk populations in Chesapeake Bay, USA, as well …
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 …
Northern Quahog (=Hard Clam) Mercenaria Mercenaria Age At Length Relationships And Growth Patterns In The York River, Virginia 1954 To 1970, Juliana Harding
Northern Quahog (=Hard Clam) Mercenaria Mercenaria Age At Length Relationships And Growth Patterns In The York River, Virginia 1954 To 1970, Juliana Harding
VIMS Articles
Northern quahogs Mercenaria mercenaria were grown in trays suspended in the York River, Virginia from November 1954 (4 months old) to December 1970 (16 years old). Measurements of shell length (mm) were made at least once a year from 1954 to 1970 and measurements of shell width (mm) were made in November 1962 and August 1965 and then once per year from 1967 through 1970. Quahog densities within the trays ranged from 1500 m(-2) (November 1954 to October 1955) to 269 m(-2) (November 1955 to December 1970). Quahog shell length (mm) increased with age (yr) and was described with a …
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 …
Why Oyster Restoration Goals In The Chesapeake Bay Are Not And Probably Cannot Be Achieved, Roger L. Mann, Eric N. Powell
Why Oyster Restoration Goals In The Chesapeake Bay Are Not And Probably Cannot Be Achieved, Roger L. Mann, Eric N. Powell
VIMS Articles
Efforts to restore the native oyster in the Chesapeake Bay enjoy enormous public support and have consumed and continue to consume vast, some would argue unreasonable and unjustifiable, amounts of funding. Despite this support the stated goals of restoration efforts are poorly defined and consequently provide no realistic measures of success in terms of time, space, or biomass. Quantitative approaches used successfully in management of and rebuilding plans for other marine and estuarine species have not been appropriately applied. Basic information in oyster population dynamics and ecology has been inadequately appreciated in defining the quantitative problem. Given these limitations it …
A Sex-Specific Metabolite Identified In A Marine Invertebrate Utilizing Phosphorus-31 Nuclear Magnetic Resonance, Robert A. Kleps, Terrell C. Myers, Rom Lipcius, Thomas Henderson
A Sex-Specific Metabolite Identified In A Marine Invertebrate Utilizing Phosphorus-31 Nuclear Magnetic Resonance, Robert A. Kleps, Terrell C. Myers, Rom Lipcius, Thomas Henderson
VIMS Articles
Hormone level differences are generally accepted as the primary cause for sexual dimorphism in animal and human development. Levels of low molecular weight metabolites also differ between men and women in circulating amino acids, lipids and carbohydrates and within brain tissue. While investigating the metabolism of blue crab tissues using Phosphorus-31 Nuclear Magnetic Resonance, we discovered that only the male blue crab (Callinectes sapidus) contained a phosphorus compound with a chemical shift well separated from the expected phosphate compounds. Spectra obtained from male gills were readily differentiated from female gill spectra. Analysis from six years of data from male and …