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Age and Growth of the White Perch Morone americana in the Lower Connecticut River
Author(s) -
Marcy Barton C.,
Richards F. Paul
Publication year - 1974
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1974)103<117:aagotw>2.0.co;2
Subject(s) - perch , white (mutation) , morone , fishery , biology , geography , fish <actinopterygii> , biochemistry , gene
White perch age and growth data were obtained from 1,706 fish collected in a 63‐km section of the lower Connecticut River between 1966 and 1969. Peak annulus formation occurred from late April to mid‐May and fish formed their scales around 20 mm standard length. Most growth (53%) occurred in the first 2 yr of life. Growth rate was faster than in 15 other populations. Growth in the upper Connecticut River was similar to that of the species in the lower river for the first 2 yr of life, but thereafter none of the populations grew as fast as white perch in the lower Connecticut River. Longevity was lowest in the Connecticut River and other waters of Connecticut, maximum observed age being seven. Older fish have been found in all other white perch populations. The length‐weight relationship was Log W(g) = ‐1.425 + 2.891 Log L (r = .96). There was a reduction in the average calculated length in all age classes in each succeeding year. This trend is directly opposite that of Leeˈs phenomenon and suggests possible stunting.