Evaluating the effects of sea surface temperature variations on fishing ground of anchoveta (<em>Engraulis ringens</em>) in the southeast Pacific Ocean

Chen Peng; Chen Xinjun

doi:10.3969/j.issn.0253-4193.2017.04.0088

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Chen Peng, Chen Xinjun. Evaluating the effects of sea surface temperature variations on fishing ground of anchoveta (Engraulis ringens) in the southeast Pacific Ocean[J]. Haiyang Xuebao, 2017, 39(4): 79-88. doi: 10.3969/j.issn.0253-4193.2017.04.0088

Citation:

Chen Peng, Chen Xinjun. Evaluating the effects of sea surface temperature variations on fishing ground of anchoveta (Engraulis ringens) in the southeast Pacific Ocean[J]. Haiyang Xuebao, 2017, 39(4): 79-88. doi: 10.3969/j.issn.0253-4193.2017.04.0088

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Evaluating the effects of sea surface temperature variations on fishing ground of anchoveta (Engraulis ringens) in the southeast Pacific Ocean

doi: 10.3969/j.issn.0253-4193.2017.04.0088

Chen Peng¹,
Chen Xinjun^2
,

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;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China;Collaborative Innovation Center for Distant-water Fisheries, Shanghai 201306, China

Received Date: 2016-07-28
Rev Recd Date: 2016-12-18

Abstract

Abstract

Anchoveta (Engraulis ringens) is one of the important small pelagic species living in the southeast Pacific Ocean. Exploring the process that fishing grounds vary with oceanic environmental factors could help us to understand the variations in fish stocks, which is beneficial for fishing industry. In this study, based on the Peruvian fishery logbooks of anchoveta from 2005 to 2014 as well as sea surface temperature (SST) data, we developed the fishing ground index (FGI) by using the catch per unit effort (CPUE) and fishing effort to understand the variation of fishing ground. The fishing ground were also divided into different types and correlated with the SST isotherms in order to evaluate their forming mechanism. The results indicated that significant differences (P<0.01) were="" found="" for="" fgi="" with="" the="" fishing="" periods="" earlier="" mid="" stage="" and="" later="" areas="" north="" middle="" area="" south="" on="" basis="" of="" analysis="" variance.="" according="" to="" distribution="" we="" defined="" ground="" anchoveta="" as="" type="" ground.="" when="" warm="" sea="" surface="" waters="">20℃) had not intruded into the near shore area, the "A" type fishing ground occurred. Otherwise, the "B" type fishing ground occurred. Our findings suggested that the surface temperature structure with "A" type is favorable for the formation of fishing ground in the earlier or mid stage of fishing periods. Moreover, the 19℃ or 20℃ SST isotherm in earlier stage and the 18℃ or 19℃ SST isotherm in mid stage could be used as an indicator to search for the productive fishing ground.
- Anchoveta (Engraulis ringens),
- southeast Pacific Ocean,
- surface temperature structure,
- fishing ground

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References(33)

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