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Bioenergetic trade-offs in the sea cucumber Apostichopus japonicus (Echinodermata: Holothuroidea) in response to CO2-driven ocean acidification
Yuan, Xiutang1; Shao, Senlin1,2; Yang, Xiaolong1,2; Yang, Dazuo2; Xu, Qinzeng3; Zong, Humin1; Liu, Shilin3
2016-05-01
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume23Issue:9Pages:8453-8461
SubtypeArticle
AbstractOcean acidification (OA) caused by excessive CO2 is a potential ecological threat to marine organisms. The impacts of OA on echinoderms are well-documented, but there has been a strong bias towards sea urchins, and limited information is available on sea cucumbers. This work examined the effect of medium-term (60 days) exposure to three pH levels (pH 8.06, 7.72, and 7.41, covering present and future pH variability) on the bioenergetic responses of the sea cucumber, Apostichopus japonicus, an ecologically and economically important holothurian in Asian coasts. Results showed that the measured specific growth rate linearly decreased with decreased pH, leading to a 0.42 %.day(-1) decrease at pH 7.41 compared with that at pH 8.06. The impacts of pH on physiological energetics were variable: measured energy consumption and defecation rates linearly decreased with decreased pH, whereas maintenance energy in calculated respiration and excretion were not significantly affected. No shift in energy allocation pattern was observed in A. japonicus upon exposure to pH 7.72 compared with pH 8.06. However, a significant shift in energy budget occurred upon exposure to pH 7.41, leading to decreased energy intake and increased percentage of energy that was lost in feces, thereby resulting in a significantly lowered allocation into somatic growth. These findings indicate that adult A. japonicus is resilient to the OA scenario at the end of the twenty-first century, but further acidification may negatively influence the grazing capability and growth, thereby influencing its ecological functioning as an "ecosystem engineer" and potentially harming its culture output.
KeywordSea Cucumber Apostichopus Japonicus Ocean Acidification Energy Budget Physiology Feeding Growth
DOI10.1007/s11356-016-6071-0
Indexed BySCI ; ISTP
Language英语
WOS IDWOS:000375412600028
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/131041
Collection海洋生态与环境科学重点实验室
Affiliation1.State Ocean Adm, Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China
2.Dalian Ocean Univ, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Xiutang,Shao, Senlin,Yang, Xiaolong,et al. Bioenergetic trade-offs in the sea cucumber Apostichopus japonicus (Echinodermata: Holothuroidea) in response to CO2-driven ocean acidification[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(9):8453-8461.
APA Yuan, Xiutang.,Shao, Senlin.,Yang, Xiaolong.,Yang, Dazuo.,Xu, Qinzeng.,...&Liu, Shilin.(2016).Bioenergetic trade-offs in the sea cucumber Apostichopus japonicus (Echinodermata: Holothuroidea) in response to CO2-driven ocean acidification.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(9),8453-8461.
MLA Yuan, Xiutang,et al."Bioenergetic trade-offs in the sea cucumber Apostichopus japonicus (Echinodermata: Holothuroidea) in response to CO2-driven ocean acidification".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.9(2016):8453-8461.
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