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Biometrics of Sardinella longiceps Val. in relation to upwelling in the Gulf of Aden
Author(s) -
Edwards R. R. C.,
Shaher S.
Publication year - 1987
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1987.tb05733.x
Subject(s) - sardinella , upwelling , biology , sardine , fish measurement , oceanography , fishery , ecology , fish <actinopterygii> , geology
Growth, size composition, condition factor and gonad index of the oil sardine, Sardinella longiceps Val., oscillated over an annual cycle in relation to upwelling. Growth in length was modelled using the formula of Pauly & Gaschütz (1979):where L t = length cm at age t years, L ∞ = 23.8cm, K=0.97, t o =0.70, C=1.08 and t s =−0.08. The relationship of growth rate, spawning, and condition factor, to upwelling and plankton blooms is discussed.