Length-weight, Condition factor and gonadosomatic index of blackspot snapper Lutjanus fulviflamma (Forsskal, 1775) (Perciformes: Lutjanidae) in the northern Persian Gulf

Alireza Razi, Ahmad Noori

Abstract

The present study aimed to evaluate the length-weight and Length-length relationships as well as the condition factor and gonadosomatic index of the Blackspot snapper, Lutjanus fulviflamma in the northern Persian Gulf, Hormozgan Province, Iran. The specimens were collected monthly from April 2016 to March 2017. The size (TL, total length; FL, fork length; SL, standard length) were measured and weighted (BW, total body wet weight). A total of 446 individuals were analyzed. The TL-BW relationship indicated isometric growth pattern in both sexes. In females, the means for condition factor was higher than males. In both sexes, the lowest value of both condition factor and gonadosomatic index were detected in autumn with ascending trend in the next seasons reaching the peak in spring. The oscillation in condition factor, as well as gonadosomatic throughout the sampling year, was most prominent in females which may be related to the reproductive cycle. The information reinforces data to define fishing closed seasons in this important fish that is used in many places in the world.

Keywords

Allometric growth, Gonadosomatic index, Lutjanidae, Reproductive season.

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References

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