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谭烨辉研究团队在《Journal of Marine Systems》发表论文

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时间:2016-06-27  作者:LMB  来源:文本大小:【 |  | 】  【打印

题目: Seasonal occurrence of Calanus sinicus in the northern South China Sea:A case study in Daya Bay

作者: Kaizhi Li*, Yan YanJianqiang YinYehui TanLiangmin Huang

刊物: Journal of Marine Systems

刊号: 2016,159:132-141

摘要: Calanus sinicus is a calanoid copepod species that is distributed broadly in the continental shelf waters of the Northwest Pacific Ocean. This study aimsto understand the seasonal variations of the distribution and abundance of C. sinicus in Daya Bay fromthe northern South China Sea (nSCS) and to explore its possible seasonal occurrence based on current and historical data. Monthly surveys of the species were conducted in Daya Bay, a subtropical bay in the nSCS, during the period between May 2013 and April 2014. C. sinicus was present from January to May, and disappeared after June. The spatial pattern of C. sinicus in the bay was characterized by its distribution into the southwestern part of the bay in January, bay-wide spread in February, patchiness in March and virtual retreat fromthe baymouth in April. Reproduction occurred fromJanuary to April at a lowrate. Adultsweremostly abundant in January and declined to a minimum in April. The percentage of early developmental stages increased from 54.1% in January to 90.1% in April, as collected by a fine mesh size. Based on historical data from Daya Bay and from the coastal waters of the nSCS, C. sinicus was carried into the nSCS from the East China Sea by the China Coastal Current during the northeastern monsoon period and survived from December to October of the next year. The summer coastal upwelling may provide suitable refuges for the species in the nSCS by limiting the adverse effects caused by high temperatures. Our results confirm the viewpoint that C. sinicus could exist in the nSCS in summer and fall.

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