title: Metazoan parasites of Brama australis from southern Chile: a tool for stock discrimination?
abstract: The metazoan parasites of 403 specimens of the southern ray's bream Brama australis from three localities in southern Chile (Lebu 36° 70' S; 73° 40' W, Calbuco 41° 50' S; 73° 08' W and Punta Arenas 53° 10' S; 70° 50' W) were recorded. More than 23 400 parasite specimens belonging to 12 taxa were registered. Metazoan parasites were dominated by the copepod Hatschekia conifera, constituting 97% of the total number of parasites; the larval cestode Hepatoxylon trichiuri was the second most important parasite (2·1% of the total number of parasites). The remaining 10 species constituted <1% of the metazoan parasites. Parasitological evidence, based on univariate and multivariate analysis, does not support the existence of discrete stocks in the studied zone.
authors.affiliation: Instituto de Ciencias Naturales Alexander von Humboldt - Universidad de Antofagasta, P. O. Box 170, Antofagasta, Chile.|Millennium Institute of Oceanography (IMO), Universidad de Concepción, Concepción, Chile.
authors.forename: M E
authors.initials: ME
authors.lastname: Oliva
authors.affiliation: Programa de Doctorado en Ciencias Aplicadas, mención Sistemas Marinos Costeros, Universidad de Antofagasta, Antofagasta, Chile.
authors.forename: J F
authors.initials: JF
authors.lastname: Espinola
authors.affiliation: Magister Ecología Sistemas Acuaticos, Universidad de Antofagasta, Antofagasta, Chile.
authors.forename: L A
authors.initials: LA
authors.lastname: Ñacari
mesh_terms: D000818:Animals; D017756:Aquaculture; D002589:Cestoda / Q000502:physiology; D002677:Chile; D033342:Copepoda / Q000502:physiology; D005393:Fish Diseases / Q000469:parasitology*; D010271:Parasites / Q000145:classification* / Q000302:isolation & purification; D010473:Perciformes / Q000469:parasitology*
keywords: biological tag; fisheries management; south-eastern Pacific; southern ray's bream; stock structure