Blue Hake Antimora rostrata (Gadiformes: Moridae) off the Atlantic Coast of South America: an Overview on Its Distribution and Biology


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Long-term data on spatial and bathymetric distributions, preferred bottom temperatures, length and weight of blue hake Antimora rostrata caught off the Atlantic coast of South America are presented based on published and unpublished materials. The species frequently occurred in waters of southern Argentina where catches were considerably higher as compared with Brazilian waters. The blue hake were captured at depths from 97 to 2162 m (average depth 1279 m). Most of the specimens (65.1%) were collected at depths from 700 to 1300 m, similar to depths in other parts of the species’ range. Bottom temperatures at sites of blue hake captures in Brazilian waters were 2.18–4.20°C (average 2.93°C). Specimens in bottom trawl catches were 9–61 cm in total length, averaging 34.84 cm. The bulk of the catches (85.5% of individuals) were fish of 25–45 cm. Body weight ranged from 70 to 1380 g (average 437.5 g). Frequency of occurrence decreased from southern Argentina to northern Brazil; complete absence of records in the Central Western Atlantic might relate to different means by which the blue hake colonized the Pacific and Atlantic coasts of South America.

作者简介

A. Orlov

Russian Federal Research Institute of Fisheries and Oceanography; Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences; Dagestan State University; Tomsk State University; Caspian Institute of Biological Resources, Dagestan Scientific Center
of the Russian Academy of Sciences

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Email: orlov@vniro.ru
俄罗斯联邦, Moscow; Moscow; Makhachkala; Tomsk; Makhachkala

A. Sytov

Russian Federal Research Institute of Fisheries and Oceanography

Email: orlov@vniro.ru
俄罗斯联邦, Moscow

N. Marí

Instituto Nacional de Investigación y Desarrollo Pesquero

Email: orlov@vniro.ru
阿根廷, Mar del Plata

D. Figueroa

Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata

Email: orlov@vniro.ru
阿根廷, Mar del Plata

S. Barbini

Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata

Email: orlov@vniro.ru
阿根廷, Mar del Plata

P. Costa

Universidade Federal do Estado do Rio de Janeiro

Email: orlov@vniro.ru
巴西, Rio de Janeiro

Y. Marin

Dirección Nacional de Recursos Acuáticos

Email: orlov@vniro.ru
乌拉圭, Montevideo

M. Mincarone

Universidade Federal do Rio de Janeiro

Email: orlov@vniro.ru
巴西, Macaé

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