Study on the catch, bycatch and discard of Chinese pelagic longline fisheries in the Atlantic Ocean

Boyi Pan; Jiangfeng Zhu; Qinqin Lin; Zhe Geng; Feng Wu; Yuying Zhang

Aquaculture and Fisheries (Mar 2024)

Study on the catch, bycatch and discard of Chinese pelagic longline fisheries in the Atlantic Ocean

Boyi Pan,
Jiangfeng Zhu,
Qinqin Lin,
Zhe Geng,
Feng Wu,
Yuying Zhang

Affiliations

Boyi Pan: College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
Jiangfeng Zhu: College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; Corresponding author. College of Marine Sciences, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China.
Qinqin Lin: College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
Zhe Geng: College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
Feng Wu: College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
Yuying Zhang: Department of Biological Sciences, Florida International University, North Miami, FL, 33181, USA

Journal volume & issue: Vol. 9, no. 2
pp. 280 – 286

Abstract

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Catch, bycatch and discard information is important for the assessment and management of fisheries. Using Chinese pelagic tuna longline observer data from 2010 to 2018, we studied the catch composition in the Chinese pelagic tuna longline fisheries in Atlantic targeting bigeye tuna (Thunnus obesus) and bluefin tuna (Thunnus thynnus), and analyzed the survival status and discard rates of common bycatch species. A total of 55 species, including tunas, billfishes, sharks, sea turtles, cetaceans, seabirds, and other pelagic species, were observed. The results indicated that the catch composition of the Chinese pelagic tuna longline fishery targeting bigeye tuna was significantly different from that targeting bluefin tuna. The annual discard rates of common species decreased over this period. Discard rate by length and discard mortality for common species were varied among species. This is the first study to estimate catch, bycatch, and discard using Chinese pelagic tuna longline observer data in the Atlantic Ocean, which is important for the management of Chinese tuna longline fisheries in Atlantic Ocean.

Published in Aquaculture and Fisheries

ISSN: 2468-550X (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: https://www.keaipublishing.com/en/journals/aquaculture-and-fisheries

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