Biometrics of Sardinella longiceps Val. in relation to upwelling in the Gulf of Aden |
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| Authors: | R R C Edwards S Shaher |
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| Institution: | UNESCO, P.O. Box 1188, Aden, PDR of Yemen;Ministry of Fish Wealth, Aden, PDR of Yemen |
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| Abstract: | 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, to=0.70, C=1.08 and ts=?0.08. The relationship of growth rate, spawning, and condition factor, to upwelling and plankton blooms is discussed. |
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