اخبار و اعلانات

 آمار

تعداد نشریات283
تعداد نشریات سازمان81
تعداد شماره‌ها2,722
تعداد مقالات31,008
تعداد مشاهده مقاله27,138,516
تعداد دریافت فایل اصل مقاله16,163,421
. (1400). Estimation of fisheries reference points for Longtail tuna (Thunnus tonggol) in the Iranian southern waters (Persian Gulf and Oman Sea). سامانه مدیریت نشریات علمی, 20(3), 678-693. doi: 10.22092/ijfs.2021.124038
. "Estimation of fisheries reference points for Longtail tuna (Thunnus tonggol) in the Iranian southern waters (Persian Gulf and Oman Sea)". سامانه مدیریت نشریات علمی, 20, 3, 1400, 678-693. doi: 10.22092/ijfs.2021.124038
. (1400). 'Estimation of fisheries reference points for Longtail tuna (Thunnus tonggol) in the Iranian southern waters (Persian Gulf and Oman Sea)', سامانه مدیریت نشریات علمی, 20(3), pp. 678-693. doi: 10.22092/ijfs.2021.124038
. Estimation of fisheries reference points for Longtail tuna (Thunnus tonggol) in the Iranian southern waters (Persian Gulf and Oman Sea). سامانه مدیریت نشریات علمی, 1400; 20(3): 678-693. doi: 10.22092/ijfs.2021.124038

Estimation of fisheries reference points for Longtail tuna (Thunnus tonggol) in the Iranian southern waters (Persian Gulf and Oman Sea)

Iranian Journal of Fisheries Sciences
دوره 20، شماره 3، مرداد 2021، صفحه 678-693    اصل مقاله (908.05 K)
شناسه دیجیتال (DOI): 10.22092/ijfs.2021.124038
چکیده
In the present research, the Catch-only method was used to determine the biological reference points (BRPs) of Longtail tuna (LOT) in Iranian southern waters (Persian Gulf and Oman Sea). Depletion-based stock reduction analysis (DBSRA) and Catch maximum sustainable yield (CMSY) models were used to estimate BRPs by applying data from 1997 to 2018.The B/BMSY was calculated as smaller than 1.0 in both models, while F/FMSY was mostly higher than 1.0, which indicates the overfishing of Longtail tuna in this area. In 2012, the F/FMSY ratio has exceeded over 1.01 and the B/BMSY ratio with 2 years delay was declined in 2014. Consequently, the biomass reduction followed in 2016, declined to the below of BMSY and the fishing pressure was not adjusted to combat. In comparison, DBSRA model indicated more cautious than CMSY in BRPs estimation for LOT in Iranian southern waters. Based on BRPs, it is recommended to implement an adjustment of annual harvest (around 55 thousand tons) as the simple (even quick) fisheries management strategies in order to guarantee the sustainable yield of this species in southern waters of Iran. We also recommend that catch-only methods could be treated as a temporary stepping-stone while sufficient data (e.g. size or age composition) is available for more reliable methods to be applied.
کلیدواژه‌ها
Longtail tuna؛ Biological reference point؛ Fisheries management؛ Persian Gulf and Oman Sea
آمار
تعداد مشاهده مقاله: 54
تعداد دریافت فایل اصل مقاله: 151


counter
سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب