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Metazoan parasites of Sebastes capensis from two localities in northern Chile as tools for stock identification

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Examination of 290 red rockfish Sebastes capensis from two fishing grounds in northern Chile (Coquimbo 71°30′ W; 30°0′ S and Antofagasta 70°40′ W; 23°30′ S) revealed 8770 metazoan parasites, belonging to 18 taxa: Udonella caligorum(Udonellidae); Interniloculus chilensis, Paramicrocotyle sp. and Neobenedenia melleni(Monogenea); larval Gnathia sp., Cirolana sp. and Rocinela sp. (Isopoda); Helicometrina nimia, Diphtherostomum sp., Lecithochirium sp. and Pseudopecoelus sp. (Digenea); Ascarophis sebastodis, Anisakis sp. and larval Hysterothylacium sp. (Nematoda); Caligus cheilodactylus, Lepeophtheirus chilensis and Trifur tortuosus(Copepoda); larval Corynosoma australe(Acanthocephala). Ten species were found only in Coquimbo and three were found only in Antofagasta, species common to both localities were Pseudopecoelus sp., C. australe, Anisakis sp. and A. sebastodis. Evidence, based on qualitative differences between the parasite faunas of the red rockfish, suggests the existence of two discrete stocks.

Keywords: Sebastes capensis; biological tags; northern Chile; parasites

Document Type: Regular Paper


Affiliations: 1: Instituto de Investigaciones Oceanológicas, Facultad de Recursos del Mar, Universidad de Antofagasta, P. O. Box 170, Antofagasta, Chile and 2: Instituto de Ecología y Evolución, Universidad Austral de Chile, P. O. Box 567, Valdivia, Chile

Publication date: 2004-01-01

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