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Full-Text Articles in Aquaculture and Fisheries
Oyster Diseases In Chesapeake Bay, Jay D. Andrews
Oyster Diseases In Chesapeake Bay, Jay D. Andrews
VIMS Articles
Three major diseases of oysters have been monitored in Virginia estuaries for 2-3 decades. Dermocystidium marinum, causing a warm-season wasting disease, was discovered in Virginia in 1950 and continues actively to kill oysters where beds or populations are found in high salinity waters ( >15%). This disease spreads by close proximity of dying oysters to other oysters, hence each isolated bed must be sampled in early fall annually to document activity of the pathogen. Control involves avoiding infected seed oysters, cleaning beds of all oysters after harvest, and isolation of new beds. A new pathogen, Minchinia nelsoni (MSX), caused …
A Mechanical Escalator Harvester For Live Oysters And Shell, Dexter S. Haven, John P. Whitcomb, Q C. Davis
A Mechanical Escalator Harvester For Live Oysters And Shell, Dexter S. Haven, John P. Whitcomb, Q C. Davis
VIMS Articles
A mechanical oyster harvester was designed, constructed and tested in Chesapeake Bay,Va.,from 1972 to 1976. It couples the escalator system of a conventional Maryland soft clam dredge with a newly designed head. Revolving spring-loaded teeth attached to two drums in the head pull or rake oysters from the bottom and horizontal water jets and the action of the revolving teeth impel the oysters onto a conveyor belt which carries the oysters to the boat.
Description And Occurrence Of Vexillifer Larvae Of Echiodon (Pisces, Carapidae) In The Western North-Atlantic And Notes On Other Carapid Vexillifers, Je Olney, Df Markle
Description And Occurrence Of Vexillifer Larvae Of Echiodon (Pisces, Carapidae) In The Western North-Atlantic And Notes On Other Carapid Vexillifers, Je Olney, Df Markle
VIMS Articles
Five hundred twenty-two vexillifers of an unnamed species of the carapid genus Echiodon are reported from ichthyoplankton collections made in the Caribbean Sea, Gulf of Mexico, Middle Atlantic Bight, Sargasso Sea, and Scotian Shelf. These are compared with 36 vexi1lifers and one juvenile of the only other known western Atlantic carapine, Campus ber- I/ludensis, as well as two small unidentified western Atlantic vexillifers, and eight eastern Pacific vexillifers of E. exsiliul/l. Vexillum placement relative to anal-fin origin, myomeres, and vertebral centra appears to be a useful character for separating Echiodon vexillifers from other western Atlantic carapids. The vexillum in Echiodon …
The Use Of Sonic Gear To Chart Locations Of Natural Bars In Lower Chesapeake Bay., D. S. Haven, J. P. Whitcomb, J. M. Zeigler, W. C. Hale
The Use Of Sonic Gear To Chart Locations Of Natural Bars In Lower Chesapeake Bay., D. S. Haven, J. P. Whitcomb, J. M. Zeigler, W. C. Hale
VIMS Articles
An underwater microphone has been developed to detect shell material on the bottom. The system is simple to use and easily constructed. It consists of a microphone encased in a PVC tube and suspended from an A-frame which is towed over the bottom. It is being used along with other methods to chart oyster bottoms in Virginia.
Haplosporidian And Haplosporidian-Like Diseases Of Shellfish, Frank O. Perkins
Haplosporidian And Haplosporidian-Like Diseases Of Shellfish, Frank O. Perkins
VIMS Articles
No abstract provided.
Some Aspects Of The Biology Of Deep-Sea Lobsters Of The Family Polychelidae (Crustacea, Decapoda) From The Western North-Atlantic, Elizabeth L. Wenner
Some Aspects Of The Biology Of Deep-Sea Lobsters Of The Family Polychelidae (Crustacea, Decapoda) From The Western North-Atlantic, Elizabeth L. Wenner
VIMS Articles
No abstract provided.
Cell Structure Of Shellfish Pathogens And Hyper-Parasites In The Genera Minchinia, Urosporidium, Haplosporidium, And Marteilia - Taxonomic Implications, Frank O. Perkins
Cell Structure Of Shellfish Pathogens And Hyper-Parasites In The Genera Minchinia, Urosporidium, Haplosporidium, And Marteilia - Taxonomic Implications, Frank O. Perkins
VIMS Articles
No abstract provided.