气候变化领域集成服务门户(CCPortal): Saxitoxin and tetrodotoxin bioavailability increases in future oceans

CCPortal

DOI	10.1038/s41558-019-0589-3
	Saxitoxin and tetrodotoxin bioavailability increases in future oceans
	Roggatz C.C.; Fletcher N.; Benoit D.M.; Algar A.C.; Doroff A.; Wright B.; Wollenberg Valero K.C.; Hardege J.D.
发表日期	2019
ISSN	1758678X
卷号	9 期号:11
英文摘要	Increasing atmospheric CO2 levels are largely absorbed by the ocean, decreasing surface water pH1. In combination with increasing ocean temperatures, these changes have been identified as a major sustainability threat to future marine life2. Interactions between marine organisms are known to depend on biomolecules, although the influence of oceanic pH on their bioavailability and functionality remains unexplored. Here we show that global change substantially impacts two ecological keystone molecules3 in the ocean, the paralytic neurotoxins saxitoxin and tetrodotoxin. Increasing temperatures and declining pH increase the abundance of their toxic forms in the water. Our geospatial global model predicts where this increased toxicity could intensify the devastating impact of harmful algal blooms, for example through an increased incidence of paralytic shellfish poisoning. Calculations of future saxitoxin toxicity levels in Alaskan clams, Saxidomus gigantea, show critical exceedance of limits safe for consumption. Our findings for saxitoxin and tetrodotoxin exemplify potential consequences of changing pH and temperature on chemicals dissolved in the sea. This reveals major implications not only for ecotoxicology, but also for chemical signals that mediate species interactions such as foraging, reproduction or predation in the ocean, with unexplored consequences for ecosystem stability and ecosystem services. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	algae; Bivalvia; Saxidomus gigantea
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124313
作者单位	Energy and Environment Institute, University of Hull, Hull, United Kingdom; Department of Biological and Marine Sciences, University of Hull, Hull, United Kingdom; Department of Physics and Mathematics, E. A. Milne Centre for Astrophysics & G. W. Gray Centre for Advanced Materials, University of Hull, Hull, United Kingdom; School of Geography, University of Nottingham, Nottingham, United Kingdom; South Slough National Estuarine Research Reserve, Charleston, OR, United States; Aleutian Pribilof Islands Association, Anchorage, AK, United States; Knik Tribe, Palmer, AK, United States
推荐引用方式 GB/T 7714	Roggatz C.C.,Fletcher N.,Benoit D.M.,et al. Saxitoxin and tetrodotoxin bioavailability increases in future oceans[J],2019,9(11).
APA	Roggatz C.C..,Fletcher N..,Benoit D.M..,Algar A.C..,Doroff A..,...&Hardege J.D..(2019).Saxitoxin and tetrodotoxin bioavailability increases in future oceans.Nature Climate Change,9(11).
MLA	Roggatz C.C.,et al."Saxitoxin and tetrodotoxin bioavailability increases in future oceans".Nature Climate Change 9.11(2019).