Management advice for the Diplotaxodon limnothrissa (Teleostei: Cichlidae) resource in the south-east arm of Lake Malawi, based on perrecruit analysis

  • Geoffrey Z Kanyerere Department of Ichthyology and Fisheries Science, Rhodes University, PO Box 94, Grahamstown 6140, South Africa; currently: Fisheries Research Unit, PO Box 27, Monkey Bay, Malawi
  • Anthony J Booth Department of Ichthyology and Fisheries Science, Rhodes University, PO Box 94, Grahamstown 6140, South Africa
  • Olaf LF Weyl Department of Ichthyology and Fisheries Science, Rhodes University, PO Box 94, Grahamstown 6140, South Africa
Keywords: Cichlidae, management advice, Lake Malawi, spawner biomass per recruit, stock assessment, yield per recruit

Abstract

Diplotaxodon limnothrissa is a widely distributed species occurring throughout Lake Malawi and is probably the most abundant cichlid in the pelagic zone of the lake. The species is exploited commercially in the south-east arm of the lake, but since the fishery's inception the resource has never been assessed. Per-recruit analysis indicated that the resource is under-exploited, with current spawner biomass per-recruit between 55% and 74% of pristine levels.

Keywords: Cichlidae, management advice, Lake Malawi, spawner biomass per recruit, stock assessment, yield per recruit

African Journal of Aquatic Science 2005, 30(2): 141–145
Published
2006-01-04
Section
Articles

Journal Identifiers


eISSN: 1727-9364
print ISSN: 1608-5914