Analysis on annual changes and reasons in high yield fishing areas for tuna purse seine in Western-Central Pacific

Dai Shuwei; Chen Xinjun; Zhang Heng; Zhou Weifeng; Xu Liangqi; Xiao Weiping

doi:10.3969/j.issn.0253-4193.2017.02.012

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Dai Shuwei, Chen Xinjun, Zhang Heng, Zhou Weifeng, Xu Liangqi, Xiao Weiping. Analysis on annual changes and reasons in high yield fishing areas for tuna purse seine in Western-Central Pacific[J]. Haiyang Xuebao, 2017, 39(2): 120-128. doi: 10.3969/j.issn.0253-4193.2017.02.012

Citation:

Dai Shuwei, Chen Xinjun, Zhang Heng, Zhou Weifeng, Xu Liangqi, Xiao Weiping. Analysis on annual changes and reasons in high yield fishing areas for tuna purse seine in Western-Central Pacific[J]. Haiyang Xuebao, 2017, 39(2): 120-128. doi: 10.3969/j.issn.0253-4193.2017.02.012

Citation:

Dai Shuwei, Chen Xinjun, Zhang Heng, Zhou Weifeng, Xu Liangqi, Xiao Weiping. Analysis on annual changes and reasons in high yield fishing areas for tuna purse seine in Western-Central Pacific[J]. Haiyang Xuebao, 2017, 39(2): 120-128. doi: 10.3969/j.issn.0253-4193.2017.02.012

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Analysis on annual changes and reasons in high yield fishing areas for tuna purse seine in Western-Central Pacific

doi: 10.3969/j.issn.0253-4193.2017.02.012

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture of China, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
2.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai 201306, China
3.
Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture of China, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
4.
Shanghai Fisheries Company, Shanghai 200090, China

Received Date: 2016-07-21
Rev Recd Date: 2016-10-06

Abstract

Abstract

Tuna is a commercially important species in the Western-Central Pacific. The skipjack (Katsuwonus pelamis) yield accounts for about 50% of total production. In this study, differences in the distribution of fishing grounds and the relationship between CPUE (Catch Per Unit Effort) and ENSO (El Niño Southern Oscillation) index are discussed through the temporal and spatial analysis of top 10 fishing areas based on the tuna purse seine catches in Western-Central Pacific (20°S-20°N, 120°E-155°W) and ENSO SSTA (sea surface temperature anomaly) data of Niño 3.4 region (5°S-5°N, 120°-170°W) collected from 1995 to 2010. The result indicated that the top 10 high yield fishing areas distributed mainly in 5°S-5°N, 130°-175°W region, which account for almost 47.5% in total production. Among them, four fishing areas like 5°-0°S,155°-160°E; 0°-5°N, 130°-135°E; 0°-5°N, 135°-140°E and 5°-0°S, 160°-165°E all have more than 10% of the top 10 high yield fishing areas' production, which are the important skipjack production areas in the Western-Central Pacific. High yield fishing areas are easily affected by SST (sea surface temperature) which are eastward distributed in 155°-180°E region during El Niño events, and westward distributed in 130°-160°E region during La Niña events.
- high yield fishing areas,
- skipjack,
- Western-Central Pacific,
- El Niño

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References

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