文献类型：期刊文献

英文题名：Post-responses of intertidal bivalves to recurrent heatwaves

作者：He, Guixiang[1];Peng, Yalan[2];Liu, Xiaolong[1];Liu, Yong[1];Liang, Jian[1];Xu, Xin[1];Yang, Ke[1];Masanja, Fortunatus[1];Xu, Yang[1];Deng, Yuewen[1];Zhao, Liqiang[1]

机构：[1]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang 524088, Peoples R China;[2]Minist Nat Resources, Zhuhai Cent Stn Marine Environm Monitoring, Zhuhai 519015, Peoples R China

年份：2022

卷号：184

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000877318200004)、、EI(收录号：20224212899495)、Scopus(收录号：2-s2.0-85139728783)、WOS

基金：The present study has been made possible by research grants from the National Science Foundation of China (42076121, M-0163) , the Department of Education of Guangdong Province (2020KTSCX050 and 2022ZDZX4012) , and the earmarked fund for Modern Agro-industry Technology Research System (CARS -49) .

语种：英文

外文关键词：Climate change; Extreme weather event; Recoverability; Energy balance; Ruditapes philippinarum

外文摘要：Heatwaves are becoming hotter, longer and more frequent, threatening the survival of intertidal bivalves and devastating their ecosystems. Yet, substantially overlooked are heatwave-induced post-responses, which are important to assess cascading consequences. Here, we investigated responses of intertidal bivalves, Ruditapes philippinarum, to recurrent heatwaves. Physiological and gene expression analyses demonstrated that the mantle tissue of R. philippinarum did not sensitively respond to heatwaves, but revealed post-responses under recovery scenarios. Of 20 genes related to essential physiology and fitness, 18 were down-regulated during the 1st re-covery period, but following repeated exposure, 13 genes were up-regulated, in line with significantly increased activities of energy-metabolizing enzymes, and antioxidant and nonspecific enzymes. The down-regulation of genes involved in biomineralization, nevertheless, was observed under recovery scenarios, implying the trade-off between essential physiological and fitness-related functions. These findings pave the way for understanding the physiological plasticity of marine bivalves in response to intensifying heatwaves.