THE REPRODUCTION BIOLOGY OF ABUDEFDUF SEXFASCIATUS IN THE PERSIAN GULF (LARAK ISLAND)

H. Hosseinzadeh; I. Sharifpor; Sh. Nazemi

THE REPRODUCTION BIOLOGY OF ABUDEFDUF SEXFASCIATUS IN THE PERSIAN GULF (LARAK ISLAND)

2001

H. Hosseinzadeh | I. Sharifpor | Sh. Nazemi

The reproduction biology of A. sexfasciatus, one of the main and important ornamental fishes in the Persian Gulfwere studied during 1997-98. For sampling, Larak island sited on south-eastern of Bandar-Abbas was chosen. The main fishing gear was hook for collecting samples. During this investigation, weight, length (FL & T.L), GSI, HSI, Kf, sex ratio, LM50 and sexual overlap zone were measured or calculated. Also, the histological studies were done on gonads. The results showed that this species is a protogenous hermaphrodite. A. sexfasciatus has an allometric growth and the results of GSI, HSI and Kf indicated that the spawning season occured in spring as a total spawner species. The sex ratio was found M:F=1.00:1.24 without any significant difference. The overlap zone was recongnized 30mm (with a range of 125-155mm). The LM50 was calculated 130-140mm for females and 160-170mm for males. The size at first maturity for females and males were determined 105 and 120mm, respectively.

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