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Iranian Journal of Ichthyology، جلد ۱۱، شماره ۱، صفحات ۰-۰
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عنوان انگلیسی Population parameters and length-weight relationship of frigate tuna, <i>Auxis thazard</i> (Lacepède, 1800) in the Persian Gulf and the Gulf of Oman (Hormozgan Province)
چکیده انگلیسی مقاله The frigate tuna, Auxis thazard is one of the economic pelagic fish faunas with wide distribution in the coastal waters of the Persian Gulf and the Gulf of Oman (Hormozgan province). This research was conducted to determine the population dynamics parameters of the frigate tuna using the length frequency data collected from 5 main landing sites in the Iranian waters of the Persian Gulf and the Gulf of Oman (Hormozgan province) during a period of 12 months from January 2022 to December 2022. During the study period, 399 fish were examined. The results showed that the range of fork length (FL) and weight of the female fish was 24.1-38.5 cm (with an average ± standard error of 30.1±0.14cm) and 0.26-0.95kg (with an average of 0.46 ± 0.006 kg), respectively and in males were 25-39 cm (with an average of 31.3±0.33 cm) and 0.28-1.1kg (average of 0.51±0.017kg). Meanwhile, the mode of FL frequency was observed 28-30cm (53.6%) in females and 30-34cm (70%) in males. The b value of the fork length-weight relationship for females and males was 2.67 and 2.75, respectively, which revealed that the growth pattern in both sexes was negative allometric. Von Bertalanffy's growth parameters including FL∞, K, and t0 were estimated as 44 cm (Y-1), 0.52 (Y-1), and -0.28, respectively. The total, natural, and fishing mortality rates were estimated at 2.38 (Y-1), 1.04 (Y-1), and 1.34 (Y-1), respectively. The recorded result revealed that overfishing occurs on frigate tuna stock in this area.
کلیدواژه‌های انگلیسی مقاله Frigate tuna,Growth and mortality parameters,Allometric growth,Persian Gulf and Gulf of Oman
نویسندگان مقاله | Reza RAHELIMOGHADAM
Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Iran.


| Mohsen SAFAIE
Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Iran.


| Mohammad DARVISHI
Persian Gulf and Oman Sea Ecological Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
نشانی اینترنتی http://ijichthyol.org/index.php/iji/article/view/997
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