Population dynamics and reproduction biology of Slender mudskipper (Scartelaos tenuis) from Hormuzgan province creeks, Persian Gulf

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Abstract

Slender Mudskipper (Scartelaos tenuis) is one of the dominant fishes in inter-tidal mud
flats area. Reproduction and population parameters of 2047 Slender mudskipper were studied
monthly from october 2008 to september 2009. The asymptotic length (L∞) and growth
coefficient (K) were estimated as 19.43(cm) and 0.64(yr-1), respectively. The minimum and
maximum T.L. was 1.1 and 19.5cm, respectively. The value of to was -8.28, and Tmax was
4.6 year. The growth equation of Von Bertalanffy was obtained at L(t) = 19.43(1- exp (-0.64(t-
(-0.28))) for this species. The rates of natural mortality (M) on Pauly's empirical equation, was
estimated 1.51 (yr-1). Five cohorts were distinguished annualy on Bhattacharya's method with
mean length of 7.89, 11.42, 13.86, 15.6 and 16.81cm. Maximum recruitment was in
Seprember at 18.8 percent. Reproductive studies showed that peak of maturity season
occurred in April. The female to male ratio was calculated as 1:1.47 and chi-square analysis
showed that it was statistically significant deviated from 1:1. LM50 is attained at a total length
of 13.3cm. The mean of absolute and relative fecundity were 6742 (±1939) and 707 (±210),
respectively. The length-weight relationship was as W= 0.02735 L 2.1655, that was isometric
growth. Result showed that slender mudskipper population was in congenial condition,
nevertheless less not evaluated.

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Iranian Scientific Fisheries Journal
Volume 22, Issue 1 - Serial Number 82
September and October 2013
Pages 37-48

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