African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Reproductive seasonality and maturation of the sergestid shrimp, Acetes japonicus (Decapoda: Sergestidae) in coastal waters of Malacca, Peninsular Malaysia

S. M. Nurul Amin1,2*, A. Arshad1,3, S. S. Siraj3 and S. B. Japar4  
  1Laboratory of Marine Science and Aquaculture, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. 2Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong-4331, Bangladesh. 2Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. 4Department of Animal Science and Fishery, Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Bintulu Campus, 89007 Bintulu Sarawak, Malaysia.
Email: [email protected], [email protected]

  •  Accepted: 08 October 2010
  •  Published: 08 November 2010

Abstract

 

Sex ratio, length at first maturity and spawning season of the sergestid shrimp (Acetes japonicus) were investigated between April 2006 and March 2007 in coastal waters of Klebang Besar, Malacca, Peninsular Malaysia. Klebang Besar waters are one of the main fishing grounds for A. japonicus in the Peninsular Malaysia. The overall annual sex ratio was found to be 1:1.46 (males: females). The spawning season was March to July with peak in May, however there was also some spawning in October to November. The female attained sexual maturity at a minimum size of 17.5 mm total length. The matured and near to spawn stages (II and III) occurred more than 50% in every month except in August. Therefore, it may be inferred that A. japonicus breeds continuously throughout the year in the coastal waters of Malacca, Peninsular Malaysia.

 

Key words: Spawning, sex ratio, maturity, Acetes japonicus.

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

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