文献类型：期刊文献

英文题名：Ocean acidification stunts molluscan growth at CO2 seeps

作者：Zhao, Liqiang[1,2];Harvey, Ben P.[3];Higuchi, Tomihiko[2];Agostini, Sylvain[3];Tanaka, Kentaro[2];Murakami-Sugihara, Naoko[2];Morgan, Holly[4];Baker, Phoebe[4];-Spencer, Jason M. Hall[3,4];Shirai, Kotaro[2]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[2]Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba 2778564, Japan;[3]Univ Tsukuba, Shimoda Marine Res Ctr, Shimoda 4150025, Japan;[4]Univ Plymouth, Sch Biol & Marine Sci, Plymouth PL4 8AA, England

年份：2023

卷号：873

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：SCI-EXPANDED(收录号：WOS:000944540300001)、、EI(收录号：20230913632538)、Scopus(收录号：2-s2.0-85148540085)、WOS

基金：We thank the technical staff at Shimoda Marine Research Center, Uni-versity of Tsukuba for their assistance aboard RV Tsukuba II and at the study site, and the Japan Fisheries agencies of Nijima/Shikine Island (Tokyo prefecture) for their support. This project was supported by the ?International Education and Research Laboratory Program?, University of Tsukuba, and contributes towards the International CO2 Natural Analogues (ICONA) Network. This work was also supported by JSPS KAKENHI Grant Number 17K17622 and 17P17333, and we also acknowledge funding sup-port from the Ministry of Environment, Government of Japan (Suishinhi: 4RF-1701) , the National Natural Science Foundation of China (42076121, M-0163, 42211530423) , the Guangdong Zhujiang Talents Program (2021QN02H665) , the Department of Education of Guangdong Province (2020KTSCX050, 2022ZDZX4012) and the program for Scientific Research Start-up Funds of Guangdong Ocean University.

语种：英文

外文关键词：Climate change; Bivalves; Calcification; Acclimation; Sclerochronology

外文摘要：Ocean acidification can severely affect bivalve molluscs, especially their shell calcification. Assessing the fate of this vulnerable group in a rapidly acidifying ocean is therefore a pressing challenge. Volcanic CO2 seeps are natural ana-logues of future ocean conditions that offer unique insights into the scope of marine bivalves to cope with acidification. Here, we used a 2-month reciprocal transplantation of the coastal mussel Septifer bilocularis collected from reference and elevated pCO2 habitats to explore how they calcify and grow at CO2 seeps on the Pacific coast of Japan. We found significant decreases in condition index (an indication of tissue energy reserves) and shell growth of mussels liv-ing under elevated pCO2 conditions. These negative responses in their physiological performance under acidified con-ditions were closely associated with changes in their food sources (shown by changes to the soft tissue 813C and 815N ratios) and changes in their calcifying fluid carbonate chemistry (based on shell carbonate isotopic and elemental sig-natures). The reduced shell growth rate during the transplantation experiment was further supported by shell 813C re-cords along their incremental growth layers, as well as their smaller shell size despite being of comparable ontogenetic ages (5-7 years old, based on shell 818O records). Taken together, these findings demonstrate how ocean acidification at CO2 seeps affects mussel growth and reveal that lowered shell growth helps them survive stressful conditions.