Alimentación de Merluccius hubbsi e impacto del canibalismo en la región comprendida entre 34°50'-47°s del Atlántico Sudoccidental.
Garcia de la Rosa, S.B.
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Feeding of Argentine hake during winter 1994, between 50 and 370 m of depth, in the studied area (34°50'-47°S), is based on the consumption of zooplanktonic crustaceans, fishes and cephalopods. Maximum feeding incidence is found at 36°-40°S (51. ), in sea layer of 80-130 m deep (62. ) and between 8:00-10:00 hours (36,6. ). Cluster analysis shows five spatial groups, with similar length distributions and characteristic principal prey items combination. The males of all sizes show a trend to feed on euphausids and hiperiids amphipods. The females eat more quantities of hake, short fin squid and other fishes. There is a change in diet related with predator size, from 47 cm TL onwards for males, and from 53 cm TL for females. This change consists in a decrease of macrozooplanktonic crustacean consumption and an increase of fish in diet. There is a decrease in the predation of all preys, with the increase of the depth, except for mictophids fishes, which prevail from 130 m onwards. During t.....