
	Pakistan Journal of Biological Sciences
	Year: 2004 \| Volume: 7 \| Issue: 12 \| Page No.: 2135-2138 DOI: 10.3923/pjbs.2004.2135.2138

The Age, Growth and Reproduction of Gray Triggerfish (Balistes capriscus, Gmelin, 1789) in Iskenderun Bay

Ali Ismen , Muhammet Turkoglu and C. Cigdem Yigin

Abstract: The length-weight relationship, age, growth parameters, spawning, sex ratio, first maturity length and fecundity of gray triggerfish (Balistes capriscus G. 1789) were studied using 195 specimens from the Iskenderun Bay. Females made up 43% and males 57% of the individuals. The total length of females ranged from 8.0 to 24.5 cm and of males from 7.9 to 25.5 cm. The length-weight relationships for male and female were W=0.0386*L^2.76 and W=0.0352*L^2.78, respectively. The age data, derived from dorsal spin readings, were used to estimate the growth parameters of the von Bertalanffy equation. L₈=39.0 cm, K=0.257, t_o=-0.79. The maximum age group determined was 3 for both sexes. The monthly values of gonadosomatic index (GSI) indicated that the spawning of gray triggerfish occurred mainly between May and July. Gray triggerfish attained first sexual maturity after 1 age (13 cm total length).

PDF References Citation Report Citation

RELATED ARTICLES:

•	Microscopic Staging System used in the Identification of Gonad Developmental Stages of Scomberoides lysan

How to cite this article:

Ali Ismen , Muhammet Turkoglu and C. Cigdem Yigin , 2004. The Age, Growth and Reproduction of Gray Triggerfish (Balistes capriscus, Gmelin, 1789) in Iskenderun Bay. Pakistan Journal of Biological Sciences, 7: 2135-2138.

DOI: 10.3923/pjbs.2004.2135.2138

URL: https://scialert.net/abstract/?doi=pjbs.2004.2135.2138

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		AGRIS
		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ISI Web of Knowledge
		PubMed
		SCIMAGO
		Thomson ISI

Science Alert