文献类型：期刊文献

英文题名：Elucidating maternal provisioning for bivalve larvae under ocean acidity extreme events

作者：Xu, Yang[1];Lyu, Shaoliang[1];Luo, Xin[1];Masanja, Fortunatus[1];Deng, Yuewen[1];Zhao, Liqiang[1,2,3]

机构：[1]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Sci & Technol Innovat Ctr Marine Inverte, Zhanjiang, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Key Lab Aquat Anim Dis Control & Hl, Zhanjiang, Peoples R China

年份：2024

卷号：202

外文期刊名：MARINE ENVIRONMENTAL RESEARCH

收录：SCI-EXPANDED(收录号：WOS:001322024800001)、、EI(收录号：20243917087348)、Scopus(收录号：2-s2.0-85204493061)、WOS

基金：The present study has been made possible by grants from the National Science Foundation of China (42076121, M-0163, 42211530423) , the Department of Education of Guangdong Province (2022ZDZX4012) , the China Scholarship Council (NO. 2023-21) , the Guangdong Zhujiang Talents Program (2021QN02H665) , and the program for Scientific Research Start-up Funds of Guangdong Ocean University.

语种：英文

外文关键词：Climate change; Ocean acidity extreme; Stress adaptation; Maternal effect; Lipidome; Ruditapes philippinarum

外文摘要：Ocean acidity extreme (OAX) events, triggered by climate change and anthropogenic activities, are projected to become more intense and frequent in coastal ecosystems, devastating marine bivalves and ecosystems they support. Maternal effects adaptively modulate offspring performance in response to climatic stressors, but whether and to what extent they can confer offspring resistance to OAX remain largely unknown. Here, we investigated impacts of OAX on the parental and larval lipidomes of Manila clams ( Ruditapes philippinarum) to add further insights into the energetic nature of maternal effects. A total of 177 significantly down-regulated lipid components (categorized into glycerolipids mainly) were shown in OAX-stressed adults compared with those reared under ambient conditions, and following parental conditioning, larvae also exhibited a further decreasing down-regulation of the glycerolipid components. Triacylglycerols were identified as the predominant composition of glycerolipids and the primary sources of energy for gonadal maturation and larvae development. Yet, larvae spawn from adults exposed to OAX had significantly lower contents of triacylglycerols than those without a prior history of parental conditioning, with the carbon chain length and unsaturation degree of the triacylglycerol components being significantly affected. The latter was also in line with significant increases in the production of triacylglycerol byproducts (diacylglycerols). Overall, our findings suggest that when OAX prevailed during reproductive seasons of Manila clams, maternal effects could be maladaptive by depressing the energetic deposition of larvae, and may not be a potential adaptive modulator of marine bivalves to cope with unprecedented environmental change.