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MEPS
Marine Ecology Progress Series

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MEPS 381:119-127 (2009)  -  DOI: https://doi.org/10.3354/meps07969

Influence of surface oceanographic variability on abundance of the western winter-spring cohort of neon flying squid Ommastrephes bartramii in the NW Pacific Ocean

Jie Cao1, Xinjun Chen1, 2, 3,*, Yong Chen1, 2, 3,4

1College of Marine Sciences, 2The Key Laboratory of the Shanghai Education Commission for Oceanic Fisheries Resources Exploitation, and 3The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, 999 Hucheng Ring Road, Shanghai 201306, PR China
4School of Marine Sciences, University of Maine, Orono, Maine 04469, USA
*Corresponding author: Email:

ABSTRACT: Abundance of the Ommastrephes bartramii winter-spring cohort fluctuated greatly from 1995 to 2004. To understand how abundance was influenced by sea surface conditions, we examined the variations in the proportion of thermal habitats with favourable sea surface temperature (SST). The SST data of both the spawning and feeding grounds were used to calculate the monthly proportion of favourable-SST areas (PFSSTA). Catch per fishing day per fishing boat (catch per unit effort, CPUE) of the Chinese mainland squid-jigging fleet was used as squid abundance index. The relationships between CPUE and monthly PFSSTA at spawning and feeding grounds were analyzed, and the relationship between CPUE and selected PFSSTA was quantified with a multiple linear regression model. Results showed that February PFSSTA at the spawning ground and August to November PFSSTA at the feeding ground could account for about 60% of the variability in O. bartramii abundance between 1995 and 2004, that February was the most important period influencing squid recruitment during the spawning season, and that feeding ground PFSSTA during the fishing season would influence CPUE by causing squid to aggregate. Our forecast model was found to perform well when we compared the model-predicted CPUEs and the average CPUEs observed during August to November in 2005 and 2006 from the Chinese squid-jigging fishery.


KEY WORDS: Sea surface temperature · Abundance index · Ommastrephes bartramii · Northwest Pacific Ocean


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Cite this article as: Cao J, Chen X, Chen Y (2009) Influence of surface oceanographic variability on abundance of the western winter-spring cohort of neon flying squid Ommastrephes bartramii in the NW Pacific Ocean. Mar Ecol Prog Ser 381:119-127. https://doi.org/10.3354/meps07969

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