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Full-Text Articles in Life Sciences
Variable Functional Responses Of A Marine Predator In Dissimilar Homogeneous Microhabitats, Rn Lipcius, Anson Hines
Variable Functional Responses Of A Marine Predator In Dissimilar Homogeneous Microhabitats, Rn Lipcius, Anson Hines
VIMS Articles
Adult soft-shelled clams (Mya arenaria) persist at low densities in Chesapeake Bay sandy habitats despite Intense predation by blue crabs (Callinectes sapidus). Clam persistence may be a consequence of variation in blue crab foraging rates as a function of clam density and sediment composition. In laboratory aquaria, we measured the functional responses (prey consumption per predator as a function of prey density) of large blue crabs to six densities of adult soft-shelled clams buried at natural depths in two sediment types (mud and sand). Functional responses in sand and mud were differentiated statistically by analyses of(1) residuals and residual sums …
Occurrence Of Some Parasites And A Commensal In The American Lobster, Homarus-Americanus, From The Mid-Atlantic Bight, Willard A. Van Engel, R. E. Harris Jr., D. E. Zwerner
Occurrence Of Some Parasites And A Commensal In The American Lobster, Homarus-Americanus, From The Mid-Atlantic Bight, Willard A. Van Engel, R. E. Harris Jr., D. E. Zwerner
VIMS Articles
No abstract provided.
Arctica Islandica (Linne) Larvae: Active Depth Regulators Or Passive Particles?, Roger L. Mann
Arctica Islandica (Linne) Larvae: Active Depth Regulators Or Passive Particles?, Roger L. Mann
VIMS Articles
The seasonal change in depth distribution of Arctica islandica (Linne) larvae at a station on the Southern New England Shelf for the period April-December 1981 is compared with the output of a numerical model designed to predict distribution in a scenario where active depth regulation predominates. Larvae in excess of 200 J.Lm length were present in the field in May at 1-30 m depth and, at depths of 20-40 m from late July through November. The majority of larvae captured in November were shelled veligers of 110 J.Lm length. Good agreement of the model with field data exists with respect …
The Public Oyster Bottoms In Virginia : An Overview Of Their Size, Location, And Productivity, Dexter S. Haven, James P. Whitcomb
The Public Oyster Bottoms In Virginia : An Overview Of Their Size, Location, And Productivity, Dexter S. Haven, James P. Whitcomb
VIMS Articles
The location size and extent of Virginia's public oyster grounds was determined using a long pole to probe the bottom , a towed sonic device that detected shell or oysters, and by sampling the bottom with patent tongs for shell and oyster density. Station location was determined using an electronic positioning system (Raydist® ). Bottoms were classed as oyster reefs, mud-shell or sand shell (productive or potentially productive). Areas having mud or sand or those in deep water over 30 ft. (9.1 m) were considered unproductive. Average oyster harvest for seed and market size oysters over the last ten years …
Peniagone-Leander New Species, An Abyssal Benthopelagic Sea-Cucumber (Echinodermata, Holothuroidea) From The Eastern Central Pacific-Ocean, Dl Pawson, Ej Foell
Peniagone-Leander New Species, An Abyssal Benthopelagic Sea-Cucumber (Echinodermata, Holothuroidea) From The Eastern Central Pacific-Ocean, Dl Pawson, Ej Foell
VIMS Articles
Peniagone leander. new species, differs from other Peniagone species in possessing the combination of: an ovoid body, lateral ridges defining right and left margins of body, anterior veil (velum) with four projections, two pairs of anterior dorsal projections posterior to velum, four pairs of posterior ventral tube feet. The reddish-brown body reaches a length of approximately 30 em. P. leander is the second species of the genus known to be benthopelagic. The species is fairly common where it occurs, dividing its time between actively swimming above the bottom and feeding on the sediment surface.
Observations On The Reproductive-Biology Of The Cownose Ray, Rhinoptera-Bonasus, In Chesapeake Bay, Joseph W. Smith, John Merriner
Observations On The Reproductive-Biology Of The Cownose Ray, Rhinoptera-Bonasus, In Chesapeake Bay, Joseph W. Smith, John Merriner
VIMS Articles
No abstract provided.
The Abundance And Distribution Of The Family Macrouridae (Pisces, Gadiformes) In The Norfolk Canyon Area, Robert W. Middleton, John Musick
The Abundance And Distribution Of The Family Macrouridae (Pisces, Gadiformes) In The Norfolk Canyon Area, Robert W. Middleton, John Musick
VIMS Articles
No abstract provided.