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Volume 36- Number 1 - 2001
Article


Cephalopods Collected In the Crustacean Fisheries from Northern and Central-Southern Chile

Juan C. Villarroel1, Marco A. Vega2,3 & Enzo Acuña1

 

(1) Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Casilla 117, Coquimbo, Chile
(2) Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
(3) Dirección actual: Ecologia y Biodiversidad Marina, Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Cientificas,
C/ Eduardo Cabello, 6 36208 Vigo, España

 

E-mail: jcvillar@nevados.ucn.cl

 

The fauna of cephalopods collected in the crustacean trawl fishery between 1996 and 1999 was analyzed. The study area includes the continental slope off Chile between 21º 34’ S and 38º 30’ S. A total of five taxa were recorded, being the octopods Opisthoteuthis sp. y Benthoctopus sp. the species with a higher relative importance, while the squids Todarodes filippovae, Gonatus antarcticus and Neorossia sp. were caught less frequently. Higher relative biomass of Opisthoteuthis sp., Benthoctopus sp. and T. filippovae were detected northward of 30º S and G. antarcticus had its higher abundance ground between 33º and 34º S. All species were caught mainly around 400 m depth in the northern study area, showing Benthoctopus sp. and G. antarcticus a decrease in the capture depth towards Central and Southern Chile. The identity of Benthoctopus sp. and the distribution of the cephalopod species found are discussed.

 

Key words: Cephalopods, continental slope, distribution, crustacean fisheries, by-catch

 

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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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