Effects of Seawater Temperature and Salinity on Physiological Performances of Swimming Shelled Pteropod Creseis acicula During a Bloom Period
文献类型： 外文期刊
作者： Han, Tingting 1 ; Qi, Zhanhui 1 ; Shi, Rongjun 1 ; Liu, Qingxia 1 ; Dai, Ming 1 ; Huang, Honghui 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev,Guangdong Prov Key L, Guangzhou, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab, Guangzhou, Peoples R China
关键词： Creseis acicula; temperature; salinity; physiological performance; bloom
期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：5.247； 五年影响因子：5.72 ）
ISSN：
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Creseis acicula is a swimming shelled pteropod species, widely distributed in the world's oceans. In 2020, an unprecedented bloom of C. acicula was observed in Daya Bay, and lasted from June to July. To date, there is very limited information on the physiological characteristics of this species, which is essential to understand bloom dynamics. In the present study, the physiological performances of C. acicula in response to temperature (17-35 degrees C) and salinity (18-38 ppt) were investigated. The oxygen consumption (OCR) and calcification rates (CR) of C. acicula peaked at 32 and 26 degrees C, respectively, while ammonia excretion rate (AER) significantly increased with increasing temperature. The thermal coefficient Q(10) (respiration) of C. acicula dropped to a minimum value between 32 and 35 degrees C, suggesting that they were in a stressful status. The O:N ratio ranged from 3.24 to 5.13, indicating that protein was the major catabolism substrate. Temperature exerted a stronger effect on the OCR and AER of C. acicula. Salinity has a more influence on CR. The preferable temperature for C. acicula ranges from 29 to 32 degrees C, and the preferable salinity ranges from 28 to 33 ppt. Based on a comprehensive consideration, we presumed that the warmer seawater temperature around the thermal discharge area of Daya Bay nuclear power plant is a possible cause for the bloom of C. acicula.
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