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Iranian Journal of Fisheries Sciences، جلد ۲۰، شماره ۶، صفحات ۱۵۶۰-۱۵۷۲
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عنوان انگلیسی Research Article: Length based spawning potential ratio (LBSPR) of javelin grunter, Pomadasys kaakan (Cuvier, 1830) in the Persian Gulf and Oman Sea
چکیده انگلیسی مقاله Length-Based Spawning Potential Ratio (LB-SPR) model was applied to describe the status of Javelin grunter, Pomadasys kaakan in the Persian Gulf and Oman Sea. From April 2002 to March 2019. 45,489 specimens were collected from fish landing sites monthly, and their length (FL) and weight were measured. The results of the present study showed that different gears captured most of the P. kaakan before first spawning time. The maximum-recorded length for this species in the study area was 60 cm FL with a mean length of 43.0±4.73 cm. The M/K value corresponds to P. kaakan maturation was calculated as 0.53. Based on the LB-SPR assessment model, it could be concluded that these species become vulnerable to fishing at its maturation' size (48 cm). The range of annual SPR of P. kaakan was estimated between 0.14 to 0.18 in the Persian Gulf and Oman Sea (Iranian waters), which is even lower than the threshold value of 0.2. Such results suggest that the exploitation of P. kaakan occurred above the maximum sustainable limit and has a confounding effect on successful recruitment and juvenile survival of this species. The Spawning Potential Ratio of P. kaakan based on time series analysis, as a biological reference point was estimated below 0.2, which means for achieving a higher SPR level and sustainable fisheries, the rate of fishing mortality should be reduced constantly.
کلیدواژه‌های انگلیسی مقاله Length frequency, Sustainability, Spawning Potential Ratio, Pomadasys kaakan, Persian Gulf, Oman Sea
نویسندگان مقاله | A. Vahabnezhad
Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran


| S.A. Hashemi
. Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran


| S.A. Taghavimotlagh
Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran


| Gh. Daryanbard
Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), Sari, Iran
نشانی اینترنتی http://jifro.ir/browse.php?a_code=A-10-86-5&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Stock assessment
نوع مقاله منتشر شده پژوهشی
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