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Study of length frequency and some biological parameters of Blacktip Sea Catfish, Plicofollis dussumieri (Valenciennes, 1840) coach in gillnet and purse seine of the Sistan and Baluchistan waters
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Mona Zellibooriabadi   , Saeid Gorgin * , Yasuzumi Fujimori , Parviz Zare , Ali Sadough Niri , Adi Susanto |
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Abstract: (416 Views) |
Blacktip Sea Catfish (Plicofollis dussumieri) is one of the most abundant commercial species along the coast of the Oman Sea. In this study, with the aim of an investigation some biological parameters of Blacktip Sea Catfish using gillnet and purse seine in coastal waters of Sistan and Baluchistan province (Oman Sea). Sampling was conducted from January to March 2020 and 818 P. dussumieri were collected using gillnet and 300 P. dussumieri were collected using purse seine and the fork length range of P. dussumieri was 22.10-62.10 cm and 17.30-10.37 cm in gillnet and purse seine, respectively. The Asymptotic length (L∞) was estimated at 64.41 cm and the optimal catch length was 34.41 cm. The length maturity (Lm50) of P. dussumieri was calculated to be 32.5 cm. The results show 38.10% of the fish caught were immature and did not have a chance to spawn. Most of the P. dussumieri that were caught by purse seine were smaller than length at maturity (Lm50). Obtaining such parameters with studies and long-term planning of these stocks and the information related to the length frequency, Asymptotic length, optimum catchable length and length at maturity can have a great impact on the knowledge of the stocks and fishing pressure on aquatic stocks such as P. dussumieri in Sistan and Baluchistan province.
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| Keywords: Blacktip Sea Catfish, Plicofollis dussumieri, optimum catchable length, Gillnet, Purse seine |
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Type of Study: Research |
Subject:
Special
Received: 2024/01/16 | Accepted: 2024/02/26 | Published: 2024/02/26
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