globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13304
论文题名:
From pole to pole: the potential for the Arctic seastar Asterias amurensis to invade a warming Southern Ocean
作者: Byrne M.; Gall M.; Wolfe K.; Agüera A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:12
起始页码: 3874
结束页码: 3887
语种: 英语
英文关键词: Antarctica ; asteroid ; climate change ; introduced species ; larva ; ocean warming ; southern migration ; thermal tolerance
Scopus关键词: asteroid ; biological invasion ; climate change ; echinoderm ; habitat use ; introduced species ; larval development ; mortality ; population migration ; range expansion ; warming ; Antarctica ; Southern Ocean ; Asterias amurensis ; animal ; animal dispersal ; Antarctica ; Arctic ; Asterias ; Australia ; climate change ; introduced species ; sea ; theoretical model ; Animal Distribution ; Animals ; Antarctic Regions ; Arctic Regions ; Asterias ; Australia ; Climate Change ; Introduced Species ; Models, Theoretical ; Oceans and Seas
英文摘要: Due to climatic warming, Asterias amurensis, a keystone boreal predatory seastar that has established extensive invasive populations in southern Australia, is a potential high-risk invader of the sub-Antarctic and Antarctic. To assess the potential range expansion of A. amurensis to the Southern Ocean as it warms, we investigated the bioclimatic envelope of the adult and larval life stages. We analysed the distribution of adult A. amurensis with respect to present-day and future climate scenarios using habitat temperature data to construct species distribution models (SDMs). To integrate the physiological response of the dispersive phase, we determined the thermal envelope of larval development to assess their performance in present-day and future thermal regimes and the potential for success of A. amurensis in poleward latitudes. The SDM indicated that the thermal ‘niche’ of the adult stage correlates with a 0–17 °C and 1–22.5 °C range, in winter and summer, respectively. As the ocean warms, the range of A. amurensis in Australia will contract, while more southern latitudes will have conditions favourable for range expansion. Successful fertilization occurred from 3 to 23.8 °C. By day 12, development to the early larval stage was successful from 5.5 to 18 °C. Although embryos were able to reach the blastula stage at 2 °C, they had arrested development and high mortality. The optimal thermal range for survival of pelagic stages was 3.5–19.2 °C with a lower and upper critical limit of 2.6 and 20.3 °C, respectively. Our data predict that A. amurensis faces demise in its current invasive range while more favourable conditions at higher latitudes would facilitate invasion of both larval and adult stages to the Southern Ocean. Our results show that vigilance is needed to reduce the risk that this ecologically important Arctic carnivore may invade the Southern Ocean and Antarctica. © 2016 John Wiley & Sons Ltd
资助项目: We thank Dr. Sebastian Holmes for assistance with equipment. This study was supported by a grant from the Belgian Science Policy Office (BR/132/A1/vERSO) to AA. The reviewers are thanked for very helpful comments that improved the manuscript. This is contribution number 176 of the Sydney Institute of Marine Science.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61248
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作者单位: Schools of Medical and Biological Sciences, University of Sydney, Sydney, NSW, Australia; School of Medical Sciences, University of Sydney, Sydney, NSW, Australia; Laboratoire de Biologie Marine, Université Libre de Bruxelles, Brussels, Belgium

Recommended Citation:
Byrne M.,Gall M.,Wolfe K.,et al. From pole to pole: the potential for the Arctic seastar Asterias amurensis to invade a warming Southern Ocean[J]. Global Change Biology,2016-01-01,22(12)
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