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Spatio-temporal variations in the habitat of jumbo squid Dosidicus gigas in the Southeast Pacific Ocean off Peru under anomalous climate conditions
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Jian Wen1, Jingwen Gong1, Ting Li1, Songling Zhao1, Yuanyuan Tian1, Xinjun Chen1, 2, 3, 4, Wei Yu1, 2, 3, 4, *
Haiyang Xuebao | 2020, 42(10) : 92 - 99
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Haiyang Xuebao | 2020, 42(10): 92-99
• Article •
Spatio-temporal variations in the habitat of jumbo squid Dosidicus gigas in the Southeast Pacific Ocean off Peru under anomalous climate conditions
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Jian Wen1, Jingwen Gong1, Ting Li1, Songling Zhao1, Yuanyuan Tian1, Xinjun Chen1, 2, 3, 4, Wei Yu1, 2, 3, 4, *
Affiliations
  • 1 College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
  • 2 National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China
  • 3 Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China
  • 4 Collaborative Innovation Center for Distant-water Fisheries, Shanghai Ocean University, Shanghai 201306, China
Published: 2020-10-25 doi: 10.3969/j.issn.0253-4193.2020.10.009
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Jumbo squid Dosidicus gigas is the main fishing target by Chinese squid-jigging fisheries, which mainly distributes in the eastern Pacific Ocean. Its habitat can be greatly affected by climatic changes. In this study, we calculated the habitat suitability index (HSI) on the squid fishing ground in the Southeast Pacific Ocean off Peru based on data of sea surface temperature (SST), the anomalies of sea surface height (SSHA) and Niño3.4 index during 1950 to 2015. Spatio-temporal variations in the squid habitat were further examined under the El Niño, the normal and the La Niña conditions. The results showed that variations in SST anomalies (SSTA) and SSHA in the fishing ground were consistent with those of the Niño3.4 index. Cross correlation analysis indicated that both SSTA and SSHA were significantly positively correlated with the Niño3.4 index. However, the HSI values were significantly negatively correlated with the Niño3.4 index. We divided the years between 1950 and 2015 into three types, the El Niño years, the normal years and the La Niña years. During the El Niño years, water temperature became warm, and the SSH increased; these changes led to contracted areas of suitable SST and SSHA, therefore, the range of suitable habitats largely decreased. However, during the normal and the La Niña years, water temperature was cold, the SSH decreased, and ranges of suitable SST and SSHA enlarged; these changes resulted in the increases in suitable habitat for the squid. Furthermore, the latitudinal gravity centers of suitable HSI on the squid fishing ground were significantly positively correlated with the Niño3.4 index. The latitudinal gravity centers of suitable HSI shifted southward in the El Niño years. Our findings suggested that ENSO events significantly affected environmental conditions on the squid fishing ground, and thus affected ranges and latitudinal distribution of suitable habitat for the squid in the Southeast Pacific Ocean off Peru.

Dosidicus gigas  /  habitat  /  spatio-temporal distribution  /  anomalous climate conditions  /  Peru
Jian Wen, Jingwen Gong, Ting Li, Songling Zhao, Yuanyuan Tian, Xinjun Chen, Wei Yu. Spatio-temporal variations in the habitat of jumbo squid Dosidicus gigas in the Southeast Pacific Ocean off Peru under anomalous climate conditions[J]. Haiyang Xuebao, 2020 , 42 (10) : 92 -99 . DOI: 10.3969/j.issn.0253-4193.2020.10.009
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Article Info
doi: 10.3969/j.issn.0253-4193.2020.10.009
  • Receive Date：2019-06-10
  • Online Date：2026-03-27
  • Published：2020-10-25
Article Data
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History
  • Received：2019-06-10
  • Revised：2019-07-22
Funding
Affiliations
    1 College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
    2 National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China
    3 Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China
    4 Collaborative Innovation Center for Distant-water Fisheries, Shanghai Ocean University, Shanghai 201306, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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