![]() ![]() Standard criteria for interpretation of the first annulus on scales, otoliths, and fin ray sections.ĭery (1981) also compared growth pattern formation on the scales and otoliths of young fishįrom various nursery areas and established more accurately the location of the first annulus. ![]() 1992) reviewed previous studies and established Summer flounder age and growth workshops held at Woods Hole in 1980Īnd 1990 (Smith et al. Shepherd (1980)Ĭross-validated methods in a comparison of zone formation on scales, otoliths, and fin ray sectionsįrom individual fish. Methods for summer flounder using laminated plastic impressions of scales. In the late 1970's, investigators at NEFSC Woods Hole Laboratory developed ageing HyalineĮdge forms on otoliths during spring and summer months opaque edge forms during autumn and The usual seasonal timing of formation of opaque and hyaline zones (Smith et al. North/south differences in spawning times), poor calcification of otoliths, and apparent reversal of Have been controversial due to uncertainty in locating the first annulus (complicated by The use of otoliths to age summer flounder has been investigated (Poole 1961 Eldridgeġ962 Powell 1974, 1982 Smith and Daiber 1977), however, the results of some of these studies Coastal estuarineĪreas are nursery grounds for this species (Able et al. Temperatures, ending by February off Cape Hatteras (Smith 1973, Morse 1981). Jersey waters coincident with offshore movement, and progresses southward with cooling water Spawning begins in September in southern New England and New An offshore migration begins in August or Shelf (Byrne and Azarovitz 1982), but in late spring and early summer they move inshore andĬoncentrate in shallow coastal waters and estuaries. During winter and early spring, summerįlounder are concentrated offshore in depths of 70-155 m along the outer edge of the continental Occur in response to changes in water temperature. continental shelf appear to be divided into two stocks, northĪnd south of Cape Hatteras, although in the vicinity of Cape Hatteras there may be some mixing Summer flounder are sexually mature by age 2 (Morse 1981). Years and 60 cm (24 inches), respectively, as compared with 12 years and 82 cm (32 inches) forįemales. Females grow faster than males males attain a maximum age and length of about 7 Nova Scotia to the northern Gulf of Mexico but is most common from Cape Cod to SouthĬarolina (Vladykov and McKenzie 1935, Bigelow and Schroeder 1953, Briggs 1958, Leim and Summer flounder is a relatively active, predaceous, and fast-growing species ranging from Summer Flounder, Paralichthys dentatus L.M. Age and Growth Studies in the Northeast.Age Determination Methods for Northwest Atlantic Species Site Links ![]()
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