Gonadosomatic index-based size at first sexual maturity of male and female Amblygaster clupeoides (Bleeker, 1849) (Clupeidae) on the east coast of the Malaysian peninsular

Rahman, Mohammad Mustafizur (2017) Gonadosomatic index-based size at first sexual maturity of male and female Amblygaster clupeoides (Bleeker, 1849) (Clupeidae) on the east coast of the Malaysian peninsular. Journal of Applied Ichthyology, 33 (3). pp. 579-582. ISSN 0175-8659 E-ISSN 1439-0426

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Abstract

Size at first sexual maturity and condition of Amblygaster clupeoides were determined in a population at the Malaysian east coast. A total of 887 specimens were collected from commercial fishing vessels between March and November 2012. A random sample was taken each time to avoid bias in the cohort sampling. Size at first sexual maturity was determined by the relationship between the total length and gonadosomatic index (GSI). Similarly, the relationship between the condition factor and GSI was applied to determine the condition at first sexual maturity. The sex ratio was close to 1:1. The total length at first sexual maturity of both males and females were at around 18 cm. Males with a GSI of ≥3.2% and females with a GSI of ≥6.5% were mature, having condition factors of ≥0.90 and ≥0.93, respectively. Based on these results the minimum permissible capture size was identified. This study establishes a strong need for regular and continued monitoring of the changes in fish size at first sexual maturity.

Item Type:	Article (Journal)
Additional Information:	6647/59072
Uncontrolled Keywords:	Gonadosomatic, index-based size, first sexual maturity, male and female, Amblygaster clupeoides (Clupeidae) on the east coast of the Malaysian peninsular
Subjects:	S Agriculture > SH Aquaculture. Fisheries. Angling
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Marine Science
Depositing User:	Dr. Mohammad Mustafizur Rahman
Date Deposited:	07 Nov 2017 09:58
Last Modified:	22 Aug 2019 15:47
URI:	http://irep.iium.edu.my/id/eprint/59072

Available Versions of this Item

• Gonadosomatic index-based size at first sexual maturity of male and female Amblygaster clupeoides (Bleeker, 1849) (Clupeidae) on the east coast of the Malaysian peninsular. (deposited 02 Feb 2017 09:19)
  • Gonadosomatic index-based size at first sexual maturity of male and female Amblygaster clupeoides (Bleeker, 1849) (Clupeidae) on the east coast of the Malaysian peninsular. (deposited 07 Nov 2017 09:58) [Currently Displayed]
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