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Diet of large-eye dentex Dentex macrophthalmus (Pisces: Sparidae) off Angola and Namibia

Diet of large-eye dentex Dentex macrophthalmus (Pisces: Sparidae) off Angola and Namibia The large-eye dentex Dentex macrophthalmus is a major target species of the demersal fishery off Angola, and is taken as bycatch off northern Namibia. Its prey spectrum off Angola and Namibia is described from the stomach contents of 593 individuals collected between northern Namibia (21°S) and northern Angola (6°S) during a bottom trawl survey carried out in 1997. In all, 20 prey types were recorded in the diet, demonstrating that it is an opportunist feeder. The main food items were fish (80.9%), euphausiids (12.0%), polychaetes (4.8%), crustaceans (2.5%) and cephalopods (0.1%). The variety of prey increases with fish size, but there is no systematic effect of depth on the diet. The dominant prey types varied as a function of fish size as well as spatially, demonstrating the different ecological niches provided by the Angola Current off northern Angola, the cold Benguela Current off northern Namibia, and the Angola-Benguela Front off southern Angola. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Journal of Marine Science Taylor & Francis

Diet of large-eye dentex Dentex macrophthalmus (Pisces: Sparidae) off Angola and Namibia

Kilongo, K; Barros, P; Diehdiou, M
African Journal of Marine Science , Volume 29 (1): 6 – Jan 1, 2007
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Diet of large-eye dentex Dentex macrophthalmus (Pisces: Sparidae) off Angola and Namibia

Abstract

The large-eye dentex Dentex macrophthalmus is a major target species of the demersal fishery off Angola, and is taken as bycatch off northern Namibia. Its prey spectrum off Angola and Namibia is described from the stomach contents of 593 individuals collected between northern Namibia (21°S) and northern Angola (6°S) during a bottom trawl survey carried out in 1997. In all, 20 prey types were recorded in the diet, demonstrating that it is an opportunist feeder. The main food items...
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Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1814-2338
eISSN
1814-232X
DOI
10.2989/AJMS.2007.29.1.4.69
Publisher site
See Article on Publisher Site

Abstract

The large-eye dentex Dentex macrophthalmus is a major target species of the demersal fishery off Angola, and is taken as bycatch off northern Namibia. Its prey spectrum off Angola and Namibia is described from the stomach contents of 593 individuals collected between northern Namibia (21°S) and northern Angola (6°S) during a bottom trawl survey carried out in 1997. In all, 20 prey types were recorded in the diet, demonstrating that it is an opportunist feeder. The main food items were fish (80.9%), euphausiids (12.0%), polychaetes (4.8%), crustaceans (2.5%) and cephalopods (0.1%). The variety of prey increases with fish size, but there is no systematic effect of depth on the diet. The dominant prey types varied as a function of fish size as well as spatially, demonstrating the different ecological niches provided by the Angola Current off northern Angola, the cold Benguela Current off northern Namibia, and the Angola-Benguela Front off southern Angola.

Journal

African Journal of Marine Science – Taylor & Francis

Published: Jan 1, 2007

Keywords: ANGOLA; DENTEX; FOOD; NAMIBIA; PREY

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