EFFECT OF PREY DENSITIES ON CANNIBALISM IN CAPE-HAKE (MERLUCCIUS-CAPENSIS) OFF NAMIBIA

被引：24
|
作者：
MACPHERSON, E
GORDOA, A
机构：
[1] Instituto de Ciencias del Mar (CSIC), Barcelona, E-08039, Paseo Joan de Borbó s/n
来源：
MARINE BIOLOGY | 1994年 / 119卷 / 01期
关键词：
D O I：
10.1007/BF00350116
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
The preference of large (>60 cm total length) Cape hake (Merluccius capensis Castelnau, 1861) for small conspecifics under natural conditions was analyzed off southern Namibia (S.E. Atlantic) between 1983 and 1989. The results indicate that cannibalism is not related to the density of the small conspecifics nor to the density of alternative prey, but rather that large hake have a dietary preference for small conspecifics. The main consequence of such cannibalism is a lack of density-dependent regulation of the M. capensis population.
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页码：145 / 149
页数：5
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