文献类型：期刊文献

英文题名：Responses of digestive metabolism to marine heatwaves in pearl oysters

作者：Liu, Xiaolong[1];Peng, Yalan[2];Xu, Yang[1];He, Guixiang[1];Liang, Jian[1,3];Masanja, Fortunatus[1];Yang, Ke[1];Xu, Xin[1];Deng, Yuewen[1];Zhao, Liqiang[1]

机构：[1]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang, Peoples R China;[2]Minist Nat Resources, Zhuhai Cent Stn Marine Environm Monitoring, Zhuhai, Peoples R China;[3]Tianjin Agr Univ, Dept Fisheries, Tianjin, Peoples R China

年份：2023

卷号：186

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000927364600003)、、EI(收录号：20230313391004)、Scopus(收录号：2-s2.0-85145491954)、WOS

基金：The present study has been made possible by research grants from the National Science Foundation of China (42076121, M-0163, 42211530423), the Department of Education of Guangdong Province (2020KTSCX050 and 2022ZDZX4012), Earmarked Fund for Modern Agro-industry Technology Research System (CARS-49), and the Guangdong Provincial Zhujiang Talents Program (2021QN02H665). Metabolomics analysis was assisted by Biotree Biotech Co., Ltd. (Shanghai, China).

语种：英文

外文关键词：Climate change; Extreme weather events; Digestive metabolism; Bivalves; Pinctada maxima

外文摘要：Marine heatwaves (MHWs) have increased in intensity and frequency in global oceans, causing deleterious effects on many marine organisms and ecosystems they support. Bivalves are among the most vulnerable taxonomic groups to intensifying MHWs, yet little is known about the underlying mechanisms. Here, we investigated the impact of MHWs on the digestive metabolism of pearl oysters (Pinctada maxima). Two moderate and severe scenarios of MHWs were performed by increasing seawater temperature respectively from 24 degrees C to 28 degrees C and 32 degrees C for 3 days. When subjected to MHWs and with increasing intensity, pearl oysters significantly enhanced their digestive enzymatic activities, such as lipase and amylase. LC-MS-based metabolomics revealed negative responses in the lipid metabolism (e.g., steroid biosynthesis, glycerophospholipid metabolism, and sphingolipid metabolism), the amino acid metabolism (e.g., glutamate, histidine, arginine, and proline), and the B-vitamins metabolism. These findings indicate that the digestive metabolism of marine bivalves can likely succumb to intensifying MHWs events.