Relationship between spatio-temporal dynamics of neon flying squid <i>Ommastrephes bartramii</i> and net primary production in the northwest Pacific Ocean

Yu Wei; Chen Xinjun; Yi Qian

doi:10.3969/j.issn.0253-4193.2016.02.006

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Yu Wei, Chen Xinjun, Yi Qian. Relationship between spatio-temporal dynamics of neon flying squid Ommastrephes bartramii and net primary production in the northwest Pacific Ocean[J]. Haiyang Xuebao, 2016, 38(2): 64-72. doi: 10.3969/j.issn.0253-4193.2016.02.006

Citation:

Yu Wei, Chen Xinjun, Yi Qian. Relationship between spatio-temporal dynamics of neon flying squid Ommastrephes bartramii and net primary production in the northwest Pacific Ocean[J]. Haiyang Xuebao, 2016, 38(2): 64-72. doi: 10.3969/j.issn.0253-4193.2016.02.006

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Relationship between spatio-temporal dynamics of neon flying squid Ommastrephes bartramii and net primary production in the northwest Pacific Ocean

doi: 10.3969/j.issn.0253-4193.2016.02.006

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Collaborative Innovation Center for Distant-water Fisheries, Shanghai 201306, China
2.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Collaborative Innovation Center for Distant-water Fisheries, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China

Received Date: 2015-07-29
Rev Recd Date: 2015-11-23

Abstract

Abstract

The ocean primary productivity plays important roles in the marine ecosystem, which greatly affects the potential catches of the marine fisheries. In this study, we evaluated the relationship between the stock level of the western stock of neon flying squid Ommastrephes bartramii and the net primary productivity by using the fishery data during 2004-2013 obtained from the Chinese Squid-jigging Science and Technology Group, as well as the remote sensing environmental data. The results suggested that the net primary productivity on the fishing ground exhibited obviously seasonal variability, which was low in spring and winter and high in summer and autumn. In the fishing months from July to November, the suitable range of the net primary productivity for O. bartramii was 500-700 mg/(m²·d) in July, 500-800 mg/(m²·d) in August, 500-1 000 mg/(m²·d) in September, 500-800 mg/(m²·d) in October and 300-500 mg/(m²·d) in November. The most suitable net primary productivity in July, August, September, October and November was 700 mg/(m²·d), 600 mg/(m²·d), 700 mg/(m²·d), 600 mg/(m²·d) and 400 mg/(m²·d), respectively. Significant positive relationship was found between the average latitude of the most suitable net primary productivity and the latitudinal gravity center of fishing effort (P<0.05), suggesting that the locations of fishing effort were not randomly distributed, which might be strongly affected by the latitudinal distribution of the most suitable net primary productivity. The annually squid abundance was positively related to the net primary productivity in March as well as its average value in July to November (P<0.05). We inferred that annual squid stock level was driven by the interaction between the concentration of net primary productivity on the spawning ground in March and on the fishing ground from July to November. Our findings indicated that the anomalous environments (El Niño and La Niña events) had strong influences on the variability of the net primary productivity on the spawning and fishing grounds, however, its regulating mechanism tended to vary.
- Ommastrephes bartramii,
- net primary productivity,
- squid abundance,
- latitudinal gravity center,
- anomalous environments,
- northwest Pacific Ocean

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References(19)

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