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:: دوره 20، شماره 2 - ( 1399 ) ::
جلد 20 شماره 2 صفحات 298-312 برگشت به فهرست نسخه ها
Research Article: Life history traits of ribbonfish Trichiurus lepturus (Linnaeus, 1758) in the Persian Gulf and Oman Sea
چکیده:   (265 مشاهده)
Ribbonfish, Trichiurus lepturus (Linnaeus, 1758), is an important component of subsistence fisheries throughout its tropical and subtropical distribution. The catch rate of ribbonfish has increased seven-fold in a decade in the Persian Gulf and Oman Sea. We collected monthly biological samples from T. lepturus, to estimate growth and mortality parameters, and identify species reproductive patterns. The annual instantaneous rate of fishing mortality (0.63 year-1) was higher than the target (Fopt= 0.26 year−1) and limit (Flim= 0.35 year−1) reference points, indicating that the ribbonfish stock is overexploited. The gonado-somatic index and monthly gonadal maturity stages of harvested fishes indicated that T. lepturus presents continuous reproductive activity throughout the year, peaking in the four months from March to June. The size at first maturity was estimated at 66.9 cm total length for females. The overall sex ratio differed significantly from the expected 0.5 with a larger proportion of females (χ2 = 203.10; p < 0.001).  The current study provide important information that can facilitate management, conservation, and sustainable fishing of T. lepturus in the Persain Gulf.
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نوع مطالعه: پژوهشي | موضوع مقاله: Stock assessment
دریافت: 1399/6/30 | پذیرش: 1399/9/25 | انتشار: 1399/12/30
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Taghavi Motlagh S, Ghodrati Shojaei M, Vahabnezhad A. Research Article: Life history traits of ribbonfish Trichiurus lepturus (Linnaeus, 1758) in the Persian Gulf and Oman Sea. IJFS. 2021; 20 (2) :298-312
URL: http://jifro.ir/article-1-4469-fa.html

Research Article: Life history traits of ribbonfish Trichiurus lepturus (Linnaeus, 1758) in the Persian Gulf and Oman Sea. مجله علوم شیلاتی ایران. 1399; 20 (2) :298-312

URL: http://jifro.ir/article-1-4469-fa.html



دوره 20، شماره 2 - ( 1399 ) برگشت به فهرست نسخه ها
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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