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Full-Text Articles in Aquaculture and Fisheries

Mercenaria Culture Using Stone Aggregate For Predator Protection, Michael Castagna, John N. Kraeuter Jun 1977

Mercenaria Culture Using Stone Aggregate For Predator Protection, Michael Castagna, John N. Kraeuter

VIMS Articles

A low technology method utilizing hatchery-raised seed clams and field grow-out techniques is presented.This technique appears to be economically feasible and can be carried out by non-technical personnel with a minimum of training. The hatchery uses the Wells-Glancy (centrifuged, incubated seawater) method for raising food for the larval clams. The larvae set in 8 - 10 days and the seed are supplied with flowing seawater until they grow to 2 mm. The 2 mm seed were placed in nursery plots and protected from predation by a layer of gravel or crushed stone aggregate. Movement of the small clams was prevented …


Reproductive Biology Of Female Deep-Sea Red Crab, Geryon-Quinquedens, From Chesapeake Bight, Paul A. Haefner Jr. Jan 1977

Reproductive Biology Of Female Deep-Sea Red Crab, Geryon-Quinquedens, From Chesapeake Bight, Paul A. Haefner Jr.

VIMS Articles

No abstract provided.


Useable Meat Yields In Virginia Surf Clam Fishery, Joseph G. Loesch Jan 1977

Useable Meat Yields In Virginia Surf Clam Fishery, Joseph G. Loesch

VIMS Articles

No abstract provided.


Life-History, Feeding-Habits, And Functional-Morphology Of Juvenile Sciaenid Fishes In York River Estuary, Virginia, Labbish N. Chao, John A. Musick Jan 1977

Life-History, Feeding-Habits, And Functional-Morphology Of Juvenile Sciaenid Fishes In York River Estuary, Virginia, Labbish N. Chao, John A. Musick

VIMS Articles

No abstract provided.


Assessment Of Surf Clam Stocks In Nearshore Waters Along The Delmarva Peninsula And In The Fishery South Of Cape Henry, Joseph G. Loesch Jan 1977

Assessment Of Surf Clam Stocks In Nearshore Waters Along The Delmarva Peninsula And In The Fishery South Of Cape Henry, Joseph G. Loesch

VIMS Articles

In 1974 the abundance of surf clams was sampled from Delmarva Peninsula, Delaware south to North Carolina. Surf clams were not found in commercial densities in the inshore waters along the Delmarva Peninsula. Off shore and south of Cape Henry, an area of intense surf clam fishing, the estimated standing crop was IO million bushels. A length-age relationship was estimated and it implies that recruitment to the fishery occurs at approximately age 2, at an average annual rate of about 8%. It is concluded that because of the low recruitment rate relative to the heavy fishing pressure that Virginia surf …


Importance Of Predation By Crabs And Fishes On Benthic Infauna In Chesapeake Bay, Rw Virstein Jan 1977

Importance Of Predation By Crabs And Fishes On Benthic Infauna In Chesapeake Bay, Rw Virstein

VIMS Articles

The significance of large motile predators in controlling the distribution and abundance of the macrobenthic invertebrates within the sediments (the infauna) in a shallow subtidal sand community was tested using manipulative field experiments. The blue crab (Callinectes sapidus) and 2 species of bottom—feeding fishes, spot (Leiostomus xanthurus) and hogchoker (Trinectes maculatus), were either excluded from or confined to small areas using wire mesh cages. Callinectes and Leiostomus effectively reduced infaunal desnities; Trinectes did not. The infauna responded to decreased predation with a large increase in density and diversity within 2 mo. The large population increases were exhibited by opportunistic species, …