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Full-Text Articles in Life Sciences
Age, Growth, Longevity, And Mortality Of Blackcheek Tonguefish, Symphurus Plagiusa (Cynoglossidae : Pleuronectiformes), In Chesapeake Bay, Virginia, Mark R. Terwilliger, Thomas A. Munroe
Age, Growth, Longevity, And Mortality Of Blackcheek Tonguefish, Symphurus Plagiusa (Cynoglossidae : Pleuronectiformes), In Chesapeake Bay, Virginia, Mark R. Terwilliger, Thomas A. Munroe
VIMS Articles
Age structure, longevity, and mortality were determined for a population of blackcheek tonguefish, Symphurus plagiusa, in Chesapeake Bay. Blackcheek tonguefish (36-202 mm TL) were randomly collected by means of otter trawl in lower Chesapeake Bay and major Virginia tributaries (James, York, and Rappahannock rivers) from April 1994 through August 1995. Ages were determined by interpreting growth increments on thin transverse sections of sagittal otoliths. Marginal increment analysis showed that a single annulus was formed in June of each year. Blackcheek tonguefish caught during this study reached a maximum age of 5+ years. Growth was rapid during the first year, then …
Morphometric Separation Of Annual Cohorts Within Mid-Atlantic Bluefish, Pomatomus Saltatrix, Using Discriminant Function Analysis, Herbert Austin, Daniel Scoles, Allison J. Abell
Morphometric Separation Of Annual Cohorts Within Mid-Atlantic Bluefish, Pomatomus Saltatrix, Using Discriminant Function Analysis, Herbert Austin, Daniel Scoles, Allison J. Abell
VIMS Articles
Larval and tagging studies neither support nor refute the existence of two mid-Atlantic stocks of bluefish, Pomatomus saltatrix, one that spawns just south of Hatteras, North Carolina, in the spring, and the other off New England in the summer. Subsequent studies have suggested either a continuous spawning with two survival events, or two distinct spawning events, one in spring south of Hatteras, NC, and a second in mid-summer from Long Island to New England. Genetic studies have supported a single stock because they show the existence of a single gene pool. A stepwise linear discriminant function analysis (DFA) of morphometrics …