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dc.creatorHarris, Patrick J.
dc.creatorMcGovern, John C.
dc.date.accessioned2013-08-22T14:12:51Z
dc.date.available2013-08-22T14:12:51Z
dc.date.issued1997
dc.identifier.urihttp://hdl.handle.net/10827/10547
dc.descriptionAspects of the life history of red porgy from the South Atlantic Bight (SAB) were examined for four periods (1972-74, 1979-81, 1988-90, and 1991-94), and annual changes in the age and growth of red porgy were described for data collected during 1988-94. The life history of red porgy during 1972-74 was assumed to represent that of an unfished population. although this population had been subject to light fishing pressure. From 1972-74 to 1979-81, the back-calculated size-at-age increased slightly for ages 2-8. By 1988-90 and 1991-94. however, the back-calculated size-at-age for the same age classes was significantly smaller than that in 1979-81. In addition, size-at-maturity and size-at-sexual-transition occurred at progressively smaller sizes for 1988-90 and 1991-94. The mean size-at-age (observed and back-calculated) declined for most ages between 1988 and 1994. Von Bertalanffy growth curves fitted to the mean back-calculated size-at-age for each year showed similar decreasing trends. Changes in life history may be a response to sustained 20-year overexploitation that has selectively removed individuals predisposed towards rapid growth and larger size.
dc.format.mediumDocument
dc.languageEnglish
dc.publisherSouth Carolina State Library
dc.relation.ispartofSouth Carolina State Documents Depository
dc.rightsCopyright status undetermined. For more information contact, South Carolina State Library, 1500 Senate Street, Columbia, South Carolina 29201.
dc.subjectRed porgy
dc.titleChanges in the life history of red porgy, Pagrus pagrus, from the southeastern United States, 1972-1994
dc.typeText
sd.specificationsThis South Carolina State Document was either saved from a document available publicly online in PDF format or converted to PDF using Adobe Acrobat X Professional.


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