International Journal of
Fisheries and Aquaculture

  • Abbreviation: Int. J. Fish. Aquac.
  • Language: English
  • ISSN: 2006-9839
  • DOI: 10.5897/IJFA
  • Start Year: 2010
  • Published Articles: 235

Full Length Research Paper

Reproductive biology of Blackchin tilapia, Sarotherodon melanotheron (Pisces: Cichlidae) from Brimsu Reservoir, Cape Coast, Ghana

Mireku, K. K.
  • Mireku, K. K.
  • Department of Fisheries and Aquatic Sciences, University of Cape Coast, Ghana.
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Blay, J.
  • Blay, J.
  • Department of Fisheries and Aquatic Sciences, University of Cape Coast, Ghana.
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Yankson, K.
  • Yankson, K.
  • Department of Fisheries and Aquatic Sciences, University of Cape Coast, Ghana.
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  •  Received: 18 August 2015
  •  Accepted: 11 December 2015
  •  Published: 30 April 2016

Abstract

This study described some aspects of the reproductive biology of Blackchin tilapia (Sarotherodon melanotheron, Cichlidae) from Brimsu reservoir. A total of 457 specimens were sampled using a monofilament gill net of mesh size 25 mm from September, 2009 to September, 2010. Standard length for the species ranged between 7.5 and 17.6 cm, with both males and females having a unimodal modal length of 10.0 to 10.9 cm. The length at sexual maturity (L50) was 11.26 and 11.34 cm for males and females, respectively. The pattern of fluctuation in gonadosomatic index indicates that the species had an extended spawning season starting from February to August.

Key words: Sarotherodon melanotheron, reproductive biology, sexual maturity.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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