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Full-Text Articles in Life Sciences
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
VIMS Articles
During the fall of 2007, Centropristis philadelphica (rock seabass) and Hypleurochilus geminatus (crested blenny) were collected from Chesapeake Bay. These captures are significant as they represent the first substantiated record of C. philadelphica from Chesapeake Bay and only the second and third validated records of H. geminatus. Additionally, the first record of H. geminatus from Chesapeake Bay was only recently recognized since the specimen had been previously misidentified as Parablennius marmoreus (seaweed blenny). The collection of seven individuals of H. geminatus in 2007, from two locations, indicates that the species may be resident within the Chesapeake Bay estuary.
Abstracts Of Technical Papers Presented At The 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009, National Shellfisheries Association
Abstracts Of Technical Papers Presented At The 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009, National Shellfisheries Association
VIMS Articles
No abstract provided.
Idiopathic Lesions And Visual Deficits In The American Lobster (Homarus Americanus) From Long Island Sound, Ny, Christopher R. Magel, Jeffrey D. Shields, Richard Brill
Idiopathic Lesions And Visual Deficits In The American Lobster (Homarus Americanus) From Long Island Sound, Ny, Christopher R. Magel, Jeffrey D. Shields, Richard Brill
VIMS Articles
In 1999, a mass mortality of the American lobster (Homarus americanus) occurred in western Long Island Sound (WLIS). Although the etiology of this event remains unknown, bottom water temperature, hypoxia, heavy metal poisoning, and pesticides are potential causal factors. Lobsters from WLIS continue to display signs of morbidity, including lethargy and cloudy grey eyes that contain idiopathic lesions. As the effect of these lesions on lobster vision is unknown, we used electroretinography (ERG) to document changes in visual function in lobsters from WLIS, while using histology to quantify the extent of physical damage. Seventy-three percent of lobsters from WLIS showed …
A Molecular Phylogeny Of The Remoras And Their Relatives, Kn Gray, Jan Mcdowell, Bb Collette, Je Graves
A Molecular Phylogeny Of The Remoras And Their Relatives, Kn Gray, Jan Mcdowell, Bb Collette, Je Graves
VIMS Articles
The Echeneoidea comprise three families of cosmopolitan tropical/subtropical marine fishes: the Echeneidae (remoras), Coryphaenidae (dolphin fishes), and Rachycentridae (cobia). Complete nucleotide sequences from the mitochondrial 12S rRNA, 16S rRNA, protein-coding ND2, and nuclear ITS-1 gene regions were used to reconstruct the phylogenetic history of these fishes. Parsimony, maximum likelihood, and Bayesian analyses of combined data sets resolved trees of similar topology. Congruent with evolutionary hypotheses based on larval morphology, a monophyletic Rachycentridae + Coryphaenidae was resolved with high support. Within a monophyletic Echeneidae, the subfamilies Echeneinae and Remorinae were monophyletic. In agreement with recent morphological analyses, the genus Remora was …
Use Of Pop-Up Satellite Archival Tag Technology To Study Postrelease Survival Of And Habitat Use By Estuarine And Coastal Fishes: An Application To Striped Bass (Morone Saxatilis), John E. Graves, Andrij Z. Horodysky, Robert J. Latour
Use Of Pop-Up Satellite Archival Tag Technology To Study Postrelease Survival Of And Habitat Use By Estuarine And Coastal Fishes: An Application To Striped Bass (Morone Saxatilis), John E. Graves, Andrij Z. Horodysky, Robert J. Latour
VIMS Articles
Pop-up satellite archival tags (PSATs) have been used to study movements, habitat use, and postrelease survival of large pelagic vertebrates, but the size of these tags has historically precluded their use on smaller coastal species. To evaluate a new generation of smaller PSATs for the study of postrelease survival and habitat use of coastal species, we attached Microwave Telemetry, Inc., X-tags to ten striped bass (Morone saxatilis) 94-112 cm total length (TL) caught on J hooks and circle hooks during the winter recreational fishery in Virginia. Tags collected temperature and depth information every five minutes and detached from the fish …
Estimation Of Bottom Trawl Catch Efficiency For Two Demersal Fishes, The Atlantic Croaker And White Perch, In Chesapeake Bay, Joel C. Hoffman, Chris F. Bonzek, Robert J. Latour
Estimation Of Bottom Trawl Catch Efficiency For Two Demersal Fishes, The Atlantic Croaker And White Perch, In Chesapeake Bay, Joel C. Hoffman, Chris F. Bonzek, Robert J. Latour
VIMS Articles
The use of fisheries-independent trawl survey data to estimate fish abundance in shallow coastal systems can present challenges for producing reliable population estimates. We used hydroacoustic and trawl data to estimate the catch efficiency of a demersal trawl that is presently used in surveys to support stock assessments in Chesapeake Bay, USA. Specifically, we determined the efficiency of catching Atlantic croakers Micropogonias undulatus and white perch Morone americana, two of the most common species captured in the trawl survey. Monotypic hauls (>90% by abundance) from 2003 to 2004 were used to estimate catch efficiency, defined as the ratio of …
An Investigation Of The Global Population Structure Of The Marlinsucker (Remora Osteochir) Inferred From Mitochondrial Control Region Dna Sequence Analysis, Gn Kurtis, Jan Mcdowell, Bb Collette, John Graves
An Investigation Of The Global Population Structure Of The Marlinsucker (Remora Osteochir) Inferred From Mitochondrial Control Region Dna Sequence Analysis, Gn Kurtis, Jan Mcdowell, Bb Collette, John Graves
VIMS Articles
Nucleotide sequences from the hypervariable mitochondrial control region were used to investigate phylogeographic structuring in the marlinsucker, Remora osteochir (Cuvier, 1829). Complete DNA sequences were isolated from 71 individuals collected from seven geographically distant sample locations (5 Atlantic and 2 Pacific). Analyses of molecular variance (AMOVA) and Phi st resolved significant levels of population structuring among collections from the Atlantic and Pacific oceans, whereas negligible levels of population structuring were resolved among collections from within the Atlantic or Pacific oceans. Cluster analysis of haplotypes based upon inter-haplotype divergences resolved two distinct evolutionary lineages, one composed of haplotypes that only occurred …
The Repulsive And Feeding-Deterrent Effects Of Electropositive Metals On Juvenile Sandbar Sharks (Carcharhinus Plumbeus), Richard Brill, Peter Bushnell, Leonie Smith, Coley Speaks, Rumya Sundaram, John Wang
The Repulsive And Feeding-Deterrent Effects Of Electropositive Metals On Juvenile Sandbar Sharks (Carcharhinus Plumbeus), Richard Brill, Peter Bushnell, Leonie Smith, Coley Speaks, Rumya Sundaram, John Wang
VIMS Articles
Reducing shark bycatch and depredation (i.e., damage caused by sharks to gear, bait, and desired fish species) in pelagic longline fisheries targeting tunas and swordfish is a priority. Electropositive metals (i.e., a mixture of the lanthanide elements lanthanum, cerium, neodymium, and praseodymium) have been shown to deter spiny dogfish (Squalus acanthias, primarily a coastal species) from attacking bait, presumably because of interactions with the electroreceptive system of this shark. We undertook to determine the possible effectiveness of electropositive metals for reducing the interactions of pelagic sharks with longline gear, using sandbar sharks (Carcharhinus plumbeus, family Carcharhinidae) as a model species. …
Survival And Growth Of Triploid Crassostrea Virginica (Gmelin, 1791) And C-Ariakensis (Fujita, 1913) In Bottom Environments Of Chesapeake Bay: Implications For An Introduction, Pr Kingsley-Smith, Hd Harwell, M. Lisa Kellogg, Standish K. Allen Jr., Donald W. Meritt, Kennedy Paynter, Mark Luckenbach
Survival And Growth Of Triploid Crassostrea Virginica (Gmelin, 1791) And C-Ariakensis (Fujita, 1913) In Bottom Environments Of Chesapeake Bay: Implications For An Introduction, Pr Kingsley-Smith, Hd Harwell, M. Lisa Kellogg, Standish K. Allen Jr., Donald W. Meritt, Kennedy Paynter, Mark Luckenbach
VIMS Articles
Survival and growth of triploid Crassostrea virginica and triploid C. ariakensis were investigated at four sites Surrounding Chesapeake Bay, United States, that varied tried in salinity, tidal regime, water depth, predation intensity and disease pressure. Four experimental treatments were established at each site: C. virginica; C. ariakensis; 50:50 of C. virginica: C. ariakensis: and shell only. Oysters were deployed at mean shell heights of 12.80 min and 13.85 mm (C. virginica and C. ariakensis, respectively), at an overall density of 347.5 oysters m(-2). Oyster survival and growth varied significantly, with site and species. Survival was significantly higher in C. virginica …
Population Studies Of The Native Eastern Oyster, Crassostrea Virginica, (Gmelin, 1791) In The James River, Virginia, Usa, Roger L. Mann, Melissa Southworth, Juliana M. Harding, James A. Wesson
Population Studies Of The Native Eastern Oyster, Crassostrea Virginica, (Gmelin, 1791) In The James River, Virginia, Usa, Roger L. Mann, Melissa Southworth, Juliana M. Harding, James A. Wesson
VIMS Articles
We describe oyster population trends in the James River, VA from 1993 through 2006 using quantitative fishery independent survey data collected using a stratified random design, The 23 reefs contained in the study area cover a total of 2.41 to 4.98 X 10(7) m(2). There is a marked pattern in density of oysters among X 10(7) m(2) and vary in individual size from 1.26 X 10(4) m(2) the reefs: during the Study period a small group of reefs comprising 5.4% of the total a rea consistently contained between 25.7 and 55.5% by number and 35.8 and 54.8% by biomass of …
Mortality Of The Veined Rapa Whelk, Rapana Venosa, In Relation To A Bloom Of Alexandrium Monilatum In The York River, United States, Juliana M. Harding, Roger L. Mann, P Moeller, Ms Hsia
Mortality Of The Veined Rapa Whelk, Rapana Venosa, In Relation To A Bloom Of Alexandrium Monilatum In The York River, United States, Juliana M. Harding, Roger L. Mann, P Moeller, Ms Hsia
VIMS Articles
Veined rapa whelks (Rapana venosa), carnivorous marine gastropods experienced significant mortality during an Alexandrium monilatum bloom in the lower York River, VA in September 2007. Rapa whelks stopped feeding as dissolved oxygen and chlorophyll concentrations increased with the development of the bloom. Whelk mortality was preceded by external signs of stress including reduced ventilation, inability to attach to hard Substrates, periodic Pumping of the opercular plate, and increased mucus production over a period of 24-48 h prior to death. High concentrations (2-7 mu g g(-1) tissue) of goniodimum A, a toxin produced by A. monilatum, were observed in bivalves attached …
Factors Influencing Mortality Estimates In Post-Release Survival Studies, Michael K. Musyl, Christopher D. Moyes, Richard Brill, Nuno M. Fragoso
Factors Influencing Mortality Estimates In Post-Release Survival Studies, Michael K. Musyl, Christopher D. Moyes, Richard Brill, Nuno M. Fragoso
VIMS Articles
Campana et al. (2009; Mar Ecol Prog Ser 387:241-253) explored the survival Of blue sharks Prionace glauca captured and released from the North Atlantic commercial longline fishery. We think that their comments and comparisons do not accurately reflect a previous survival study of blue sharks in Hawaii (Moyes et al. 2006; Trans Am Fish Soc 135:1389-1397). The differences in mortality between the studies, similar to 5% in the Hawaii-based fishery and similar to 35% in the North Atlantic fishery, were suggested to be due to failure of Moyes et al. (2006) to accurately reflect commercial fishing conditions. Careful examination of …
Ecology Of Small Neritic Fishes In The Western Gulf Of Alaska. Ii. Consumption Of Krill In Relation To Krill Standing Stock And The Physical Environment, Matthew T. Wilson, Christina M. Jump, Andre Buchheister
Ecology Of Small Neritic Fishes In The Western Gulf Of Alaska. Ii. Consumption Of Krill In Relation To Krill Standing Stock And The Physical Environment, Matthew T. Wilson, Christina M. Jump, Andre Buchheister
VIMS Articles
Krill (Euphausiacea) is a patchily distributed taxon whose availability may limit neritic fishes in temperate oceans. In the western Gulf of Alaska, krill-fish aggregations were associated with high-flow areas over the shelf. We examined fish impacts on krill standing stocks in areas of different temperature, salinity, and net current velocity. Samples were collected during September 2000, 2001, and 2003 over a 48-site grid within a known walleye pollock nursery. Krill were a dietary staple of the dominant fishes: walleye pollock Theragra chalcogramma, capelin Mallotus villosus, and eulachon Thaleichthys pacificus, but their proportion in diets varied by predator species and predator …