Population dynamics and estimated anchoveta consumption of bonito (Sarda chiliensis) off Peru, 1953 to 1982
1987
Pauly, D. | De Vildoso, A.Ch. | Mejia, J. | Samame, M. | Palomares, M.L. (International Center for Living Aquatic Resources Management, Makati, Metro Manila (Philippines) | Instituto del Mar del Peru, Callao (Peru))
The population dynamics of bonito (Sarda chiliensis) off Peru is reviewed, with emphasis on its growth, mortality and biomass. A food consumption model is derived based on actual data on S. chiliensis and other scombrids. Daily rations in body weight were estimated as ranging from 2.23 (at 14 degrees Celsius) to 7.04 (at 24 degrees Celsius), and used, along with food composition data, to estimate monthly anchoveta (Engraulis ringens) consumption by bonito off Peru, between 4 and 14 degrees South, from 1953 to 1982. These estimates ranged from a maximum of 86,000 tonnes (t) in May 1953 to 400 t, first reached in June 1975. Over-all bonito appears to have a modest impact on the anchoveta stock.
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