Age, Growth, and Mortality of Spotted Seatrout in Florida Waters
- 1 July 1994
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 123 (4) , 482-497
- https://doi.org/10.1577/1548-8659(1994)123<0482:agamos>2.3.co;2
Abstract
Estimates of age, growth, and mortality of spotted seatrout Cynoscion nebulosus were made by analyzing fish from commercial and recreational catches in 1986–1988 in three estuarine areas of Florida: Apalachicola Bay, Charlotte Harbor, and Indian River Lagoon. Thin sections of sagittae were used to determine age; annulus formation occurred in November–May. The maximum observed age differed among areas, ranging from 5 to 9 years for males and from 6 to 8 years for females. Spotted seatrout reached 301–337 mm total length at the end of their first year. Females were generally larger at age than males, although growth was highly variable. After age 1, male growth slowed to an average of 34–51 mm/year and was modeled best by area-specific linear growth equations. Females showed asymptotic growth that slowed from 87–107 mm at ages 1–2 to 46–60 mm at ages 4–5 and that was modeled best by area-specific Gompertz growth equations. Males and females from Indian River Lagoon and Apalachicola Bay were general...Keywords
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