Analysis on optimal habitats of purpleback flying squid in the open South China Sea based on remote sensing data.

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Analysis on optimal habitats of purpleback flying squid in the open South China Sea based on remote sensing data.

XU Hong-yun^1,2,3, CUI Xue-sen^1,2, ZHOU Wei-feng^1,2*, CHEN Guo-bao^4*, Li An-zhou^1,2,3#br#

(¹ Key Laboratory of East China Sea & Ocean Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Shanghai 200090, China; ^2 Key Laboratory of Fisheries Resources Remote Sensing and Information Technology, Chinese Academy of Fishery Sciences, Shanghai 200090, China; ^3 College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; ⁴South China Sea Fishery Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China).

Online:2016-11-10 Published:2016-11-10

Abstract

Abstract: According to the data of purpleback flying squid (Sthenoteuthis oualaniensis) fishery data during 2010-2014 in the open South China Sea, combined with sea surface temperature (SST) and sea surface height anomaly (SSHA) data from ocean remote sensing satellites, and catch per unit of effort (CPUE) as the fishery density index to calculate suitability index (SI) by external envelope method, habitat suitability index (HSI) model was built by using arithmetic mean method. The results showed that optimal ranges of SST and SSHA in the main grounds of the open South China Sea were 26.4-29.6 ℃ and -0.014-0.114 cm, respectively. When HSI value was more than 0.6, percentage of fishing times reached 77.99% and the average CPUE was 4.13 t·d^-1. Our results indicated that the HSI model based on SST and SSHA could denote the main fishing grounds of purpleback flying squid, and the accuracy of the model was above 77%.

Key words: Sepia pharaonis, oxygen consumption rate., ecological factors, embryo

XU Hong-yun1,2,3, CUI Xue-sen1,2, ZHOU Wei-feng1,2*, CHEN Guo-bao4*, Li An-zhou1,2,3. Analysis on optimal habitats of purpleback flying squid in the open South China Sea based on remote sensing data.[J]. cje.

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Analysis on optimal habitats of purpleback flying squid in the open South China Sea based on remote sensing data.

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