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Full-Text Articles in Life Sciences

Estimated Growth Functions And Size-Age Relationships Of The Hard Clam, Mercenaria Mercenaria, In The York River, Virginia, Joseph G. Loesch, Dexter S. Haven Jan 1973

Estimated Growth Functions And Size-Age Relationships Of The Hard Clam, Mercenaria Mercenaria, In The York River, Virginia, Joseph G. Loesch, Dexter S. Haven

VIMS Articles

A study of the hard clam, Mercenaria mercenaria (Linnaeus, 1758) resources of Virginia is currently being conducted. One important aspect, their growth in this region, has been limited to the study of small juveniles (HAVEN & ANDREWS, 1957). Our objectives were to demonstrate that M. mercenaria growth functions could readily be derived and statistically contrasted, and, subsequently, the age-size relationship could be estimated.


Larval Culture Of The Calico Scallop, Argopecten Gibbus, T. J. Costello, J.Harold Hudson, John L. Dupuy, Samuel Rivkin Jan 1973

Larval Culture Of The Calico Scallop, Argopecten Gibbus, T. J. Costello, J.Harold Hudson, John L. Dupuy, Samuel Rivkin

VIMS Articles

Mature calico scallops, Argopecten gibbus, collected from the grounds off Cape Kennedy, Florida, were induced to spawn in the laboratory. Fertilized eggs were reared to postlarvae in sea water of 23° C ± 2.0° C at a salinity of 35 %o. The external morphology of eggs and developing larval stages are described.


Lymphocystis In Fish From East African Lakes, Ilan Paperna Jan 1973

Lymphocystis In Fish From East African Lakes, Ilan Paperna

VIMS Articles

Lymphocystis is described for the first time from Africa. Lymphocystis infected cells formed clusters on the tails of cichlid fishes from East African lakes. Small rounded inclusion bodies and many large vacuoles were observed in the cytoplasm of the hypertrophied cells.


Meristic And Morphometric Comparison Of Hakes, Urophycis-Chuss And Urophycis-Tenuis (Pisces, Gadidae), John A. Musick Jan 1973

Meristic And Morphometric Comparison Of Hakes, Urophycis-Chuss And Urophycis-Tenuis (Pisces, Gadidae), John A. Musick

VIMS Articles

No abstract provided.


Larvae And Young Of Western North-Atlantic Bothid Flatfishes Etropus-Microstomus And Citharichthys-Arctifrons In Chesapeake Bight, Sally L. Richardson, Edwin B. Joseph Jan 1973

Larvae And Young Of Western North-Atlantic Bothid Flatfishes Etropus-Microstomus And Citharichthys-Arctifrons In Chesapeake Bight, Sally L. Richardson, Edwin B. Joseph

VIMS Articles

No abstract provided.


The Marine Algae Of Virginia And Maryland Including The Chesapeake Bay Area, Franklyn D. Ott Jan 1973

The Marine Algae Of Virginia And Maryland Including The Chesapeake Bay Area, Franklyn D. Ott

VIMS Articles

Until 1965 there existed no publication treating any aspect of the benthic or attached marine algae of the coast of Virginia and Maryland including the Chesapeake Bay area. Prior to this date only minor references to particular species for this area .,can be found in the literature. This paucity of research can be attributed, in the main, to the lack of solid substrata permitting prolonged and extensive development of algal populations. Time spent on more favorable habitats such as the rocky shores of the New England coast offer, to the phycologist, far more rewarding results for his endeavors. (...)


Malate Dehydrogenase And Tetrazolium Oxidase Of Scyphistomae Of Aurelia-Aurita, Chrysaora-Quinquecirrha, And Cyanea-Capillata (Scyphozoa-Semaeostomeae), Al Lin, Pl Zubkoff Jan 1973

Malate Dehydrogenase And Tetrazolium Oxidase Of Scyphistomae Of Aurelia-Aurita, Chrysaora-Quinquecirrha, And Cyanea-Capillata (Scyphozoa-Semaeostomeae), Al Lin, Pl Zubkoff

VIMS Articles

Three species of scyphozoan jellyfishes, Aurelia aurita (LINNAEUS 1758), Chry- saora quinquecirrha (Desor 1848), and Cyanea capillata (LINNAEUS 1758) are commonly found in Chesapeake Bay. Because of the uncertainty in the identification of jellyfish scyphistomae (polyps) collected from the field, CALDER (1971) used the nematocyst complement for distinguishing polyps of these different species. BURNETT & GOULD (1971) used an immunological assay to differentiate polyps of Aurelia aurita and Chrysaora quinquecirrha from those of Cyanea capillata.

In this study, the MDH and tetrazolium oxidase (TO) isozyme patterns of the polyps of Chesapeake Bay Aurelia aurita, Chrysaora quinquecirrha, and Cyanea capitlata are …


Growth And Survival Of The Bay Scallop, Argopecten Irradians, At Various Locations In The Water Column And At Various Densities, William Duggan Jan 1973

Growth And Survival Of The Bay Scallop, Argopecten Irradians, At Various Locations In The Water Column And At Various Densities, William Duggan

VIMS Articles

Two experiments were carried out in 1971 using bay scallops spawned in Aug and Sept of 1970. 4 groups of 150 scallops were held at the surface, 1 m below the surface, 2 m off the bottom, and 1 m off the bottom, to find the effects of depth on growth and survival. Scallops were held in surface enclosures at 4 different densities (100, 75, 50 and 25/ft super(2)) to find out the effects of crowding. In the depth experiment growth was approx equal throughout the water column. Mortality decreased with increasing depth with the exception of those held at …


Digestive-System And Feeding Habits Of Cunner, Tautogolabrus-Adsprus - Stomachless Fish, Labbish N. Chao Jan 1973

Digestive-System And Feeding Habits Of Cunner, Tautogolabrus-Adsprus - Stomachless Fish, Labbish N. Chao

VIMS Articles

No abstract provided.


Age, Growth, And Reproduction Of Northern Puffer, Sphoeroides-Maculatus, Joanne L. Laroche, Jackson Davis Jan 1973

Age, Growth, And Reproduction Of Northern Puffer, Sphoeroides-Maculatus, Joanne L. Laroche, Jackson Davis

VIMS Articles

No abstract provided.