Transactions of the Western Section of the Wildlife Society

1971, Volume 7


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Year1971
Volume7
TitleAge and Growth of Orangemouth Corvina in the Salton Sea, California
Author(s)Keith R. Anderson
ArticleLink to PDF

Abstract:
Age of 1,444 orangemouth corvina collected from the Salton Sea, California, from 1958 through 1966 were determined from their scales. Age groups 0 through IX were represented. The total length-anterior scale relationship is described by the formula L = 74.111 + 2.252S (r = 0.92). Growth was variable between year classes and became more irregular with increasing age. The grand mean length attained at the end of each year of life for the combined year-classes best described the general growth of the species. Grand mean lengths for ages one through six are: 159, 363 1 493 1 601, 666, and 717 millimeters respectively. Annulus formation occurred from March to July, with younger corvina producing an annulus earlier in the year than older individuals. Growth occurred through spring and summer and apparently ceased by October or November. Females became heavier for their length as length increased; males showed the opposite relationship. The general weight-length relationship is described by the formula W = 6.37 X10-6 L 2.99.


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