THE DISTRIBUTION AND ABUNDANCE OF 7 COMMERCIAL TRAWLFISH FROM THE CAPE SOUTH COAST OF SOUTH-AFRICA, 1986-1990

被引：54

作者：

BADENHORST, A

SMALE, MJ

机构：

[1] Sea Fisheries Research Institute, Rogge Bay, 8012

[2] Port Elizabeth Museum, Humewood, 6013, P.O. Box

来源：

SOUTH AFRICAN JOURNAL OF MARINE SCIENCE-SUID-AFRIKAANSE TYDSKRIF VIR SEEWETENSKAP | 1991年 / 11卷

关键词：

D O I：

10.2989/025776191784287565

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Spatial and size/age distributions of seven teleost species are described from a series of five annual trawling surveys made over the continental shelf and upper slope (20-500 m) of the South African south coast between Cape Agulhas and Port Alfred. The catch was quantified and scaled up to an estimate of an annual biomass index for each of the principal species. The fish studied were the two species of Cape hake Merluccius capensis and M. paradoxus, kingklip Genypterus capensis, Agulhas sole Austroglossus pectoralis, Cape horse mackerel Trachurus trachurus capensis, monk Lophius vomerinus and panga Pterogymnus laniarius. Each showed varying patterns of biomass fluctuation annually, although the surveys constituted too short a data series to reveal significant trends. Nevertheless, declines in abundance of panga and kingklip supported data collected from other sources over a longer period. Interpretation of the data is tempered by a realization that species which are patchily distributed or less vulnerable to the sampling gear may have been inadequately sampled. The information can be used for more-effective management of the multi-species demersal trawl fishery of the region.

引用

页码：377 / 393

页数：17

共 31 条

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