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Volume 43 - Number 3 - 2008

An integrated conceptual approach to study the swordfish (Xiphias gladius Linnaeus, 1758) fishery in the eastern South Pacific

Eleuterio Yáñez1, Rodrigo Vega2, Claudio Silva1, Jaime Letelier1, 3, Maria Ángela Barbieri1, 3 and Fernando Espíndola3


1Pontificia Universidad Católica de Valparaíso, Casilla 1020, Valparaíso, Chile
2Universidad Austral de Chile, Casilla 567, Valdivia, Chile
3Instituto de Fomento Pesquero, Casilla 8V, Valparaíso, Chile



The available environmental, biological, ecological, and fishery data associated with the exploitation of swordfish (Xiphias gladius) in the eastern South Pacific were analyzed and the literature on models aiming at an ecosystem approach to fisheries management was reviewed. The conceptual model set forth in this work incorporates three planes with processes defined on three spatial (Pacific Ocean, eastern South Pacific, fishing area) and three temporal (interannual, seasonal, intraseasonal) scales. Because of the swordfish's geographic distribution, life history, and migratory activity, the model must consider several developmental states (eggs and larvae, juveniles, adults) inhabiting different grounds (spawning, breeding, adult feeding). The conceptual model presented herein, without detracting from current operational fisheries research, suggests what must be done to develop integrated fishery management


Key words: Environment, exploitation, conceptual model, hypothesis




1Laboratorio de Zooplancton, Instituto de Ciencias del Mar y Limnología,Universidad Nacional Autónoma de México. A. P. 70-305, 04510 México, D. F. México
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