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Full-Text Articles in Aquaculture and Fisheries
Biodiversity Of Bear Seamount, New England Seamount Chain: Results Of Exploratory Trawling, Ja Moore, M Vecchione, R Gibbons, Jk Galbraith, M Turnipseed, M Southworth, E Watkins
Biodiversity Of Bear Seamount, New England Seamount Chain: Results Of Exploratory Trawling, Ja Moore, M Vecchione, R Gibbons, Jk Galbraith, M Turnipseed, M Southworth, E Watkins
VIMS Articles
Bear Seamount (39°55′N 67°30′W) is an extinct undersea volcano located inside the U.S. Exclusive Economic Zone south of Georges Bank. The fauna associated with the seamount was little known until twenty trawl stations were made 2-7 December 2000, by the NOAA ship R/V Delaware II. The objective of the survey was to begin to document the biodiversity on and over the seamount, particularly of fishes, cephalopods, and crustaceans. Representatives of most species were preserved as vouchers and for subsequent definitive identification. This report presents a description of the biodiversity. A total of at least 274 species were collected. Preliminary identifications …
Influence Of Habitat On Diet And Distribution Of Striped Bass (Morone Saxatilis) In A Temperate Estuary, Jm Harding, Roger L. Mann
Influence Of Habitat On Diet And Distribution Of Striped Bass (Morone Saxatilis) In A Temperate Estuary, Jm Harding, Roger L. Mann
VIMS Articles
Striped bass (Morone saxatilis) are recreationally and commercially valuable finfish along the Atlantic seaboard of North America including the Chesapeake Bay estuary. Habitat use patterns for striped bass in relation to biogenic habitat types in Chesapeake Bay tributaries are poorly described although it is widely acknowledged that these piscivorous fishes use estuarine habitat for nursery and feeding grounds during development. Striped bass diet and distribution patterns were examined in relation to a gradient of biogenic habitats ranging from complex three-dimensional oyster reef through flat oyster bar to sand bottom habitat in the Piankatank River, Virginia. Striped bass were more abundant …
Spatial Dynamics And Value Of A Marine Protected Area And Corridor For The Blue Crab Spawning Stock In Chesapeake Bay, Rom Lipcius, Wt Stockhausen, Rochelle D. Seitz, Pj Geer
Spatial Dynamics And Value Of A Marine Protected Area And Corridor For The Blue Crab Spawning Stock In Chesapeake Bay, Rom Lipcius, Wt Stockhausen, Rochelle D. Seitz, Pj Geer
VIMS Articles
In lower Chesapeake Bay, a 172,235 ha marine protected area and corridor (MPAC) was recently established to protect blue crab adult females either en route to or at the spawning grounds during the reproductive period. The MPAC was justified due to a recent substantial decline in spawning stock biomass. It was situated in waters deeper than 10 in throughout the lower bay due to the high abundances of adult females in this zone, and it was an expansion of a historical spawning sanctuary near the bay mouth to include northward extensions (upper and lower MPACs). We examined spatial dynamics of …
Potential Bottom-Up Control Of Blue Crab Distribution At Various Spatial Scales, Rochelle D. Seitz, R. Lipcius, Wt Stockhausen, Et Al
Potential Bottom-Up Control Of Blue Crab Distribution At Various Spatial Scales, Rochelle D. Seitz, R. Lipcius, Wt Stockhausen, Et Al
VIMS Articles
Top-down (i.e., predation), bottom-up (i.e., food availability), and physical factors may influence blue crab (Callinectes sapidus) distribution. To assess the role of bottom-up and physical process in blue crab distributions, we concurrently measured density of the blue crab (Callinectes sapidus), density of its principal prey, the Baltic clam (Macoma balthica), and physical characteristics in mud and sand habitats spanning various spatial scales (1-10 km and 10-50 km) in the York River, Chesapeake Bay. Clam and crab densities were intermediate in mud, low in downriver sand, and high in upriver sand. Clam and crab densities were not correlated in mud. whereas …
Simulated Effects Of Seagrass Loss And Restoration On Settlement And Recruitment Of Blue Crab Postlarvae And Juveniles In The York River, Chesapeake Bay, Wt Stockhausen, Rom Lipcius
Simulated Effects Of Seagrass Loss And Restoration On Settlement And Recruitment Of Blue Crab Postlarvae And Juveniles In The York River, Chesapeake Bay, Wt Stockhausen, Rom Lipcius
VIMS Articles
Seagrass meadows provide important settlement habitat, food and refuge for postlarvae and young juveniles of the blue crab, Callinectes sapidus. In the York River, Chesapeake Bay, area] cover and distribution of seagrass beds has declined historically. Beds which existed 12-25 km upriver from the mouth disappeared and have not recovered. A model for planktonic postlarval behavior, coupled with a 3-dimensional hydrodynamic transport model for the York River, was used to investigate potential effects of the decline in seagrass abundance, and hypothetical restoration, on blue crab settlement and recruitment to the benthos, both in seagrass and to unvegetated bottom. Effects of …
Bioenergetic Modeling Of The Blue Crab (Callinectes Sapidus) Using The Fish Bioenergetics (3.0) Computer Program, Bj Brylawski, Tj Miller
Bioenergetic Modeling Of The Blue Crab (Callinectes Sapidus) Using The Fish Bioenergetics (3.0) Computer Program, Bj Brylawski, Tj Miller
VIMS Articles
To understand better the ecology and growth dynamics of the blue crab (Callinectes sapidus). we developed a bioenergetic model based upon the Fish Bioenergetics 3.0 computer program. We summarized and analyzed existing data from published studies on the ecology and physiology of both blue crab and closely related species to parameterize the model. The respiration and excretion components were estimated directly from published studies. Parts of the consumption component were estimated indirectly. The resulting model was evaluated for applicability against known growth trajectories from field and laboratory studies. The model predicted observed growth and consumption to a first approximation. Inspection …
Validation Of Presumed Annual Marks On Sectioned Otoliths Of Spotted Seatrout, Cynoscion Nebulosus, In The Chesapeake Bay Region, Tf Idhe, Me Chittenden
Validation Of Presumed Annual Marks On Sectioned Otoliths Of Spotted Seatrout, Cynoscion Nebulosus, In The Chesapeake Bay Region, Tf Idhe, Me Chittenden
VIMS Articles
Annual otolith incremnet deposition has not been validated for spotted seatrout populations north of Florida. To validate the marks on sectioned otoliths of Chesapeake Bay spotted seatrout, a size-stratified subsample (n = 683) was randomly selected from a total of 2763 fish collected from June 1996 to March 1999. Monthly marginal increment frequency plots and monthly frequency of 0 marginal increment plots showed that presumed annual marks-interpreted as the distal edge of the translucent margin-formed once a year, during March and April, thus validating the sectioned otolith method in spotted seatrout of ages 1-5 for the Chesapeake Bay region.