DOI: 10.1111/gcb.12190
论文题名: Vulnerability of the calcifying larval stage of the Antarctic sea urchin Sterechinus neumayeri to near-future ocean acidification and warming
作者: Byrne M. ; Ho M.A. ; Koleits L. ; Price C. ; King C.K. ; Virtue P. ; Tilbrook B. ; Lamare M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 7 起始页码: 2264
结束页码: 2275
语种: 英语
英文关键词: Climate change
; Development
; Eastern Antarctica
; Echinopluteus
; pCO 2
; Sea urchin
; Temperature
Scopus关键词: sea water
; acidification
; carbon dioxide
; climate change
; echinoderm
; embryo
; growth rate
; larva
; temperature effect
; warming
; animal
; animal embryo
; Antarctica
; article
; bone mineralization
; chemistry
; embryo development
; environmental monitoring
; greenhouse effect
; growth, development and aging
; larva
; methodology
; pathology
; pH
; physiology
; principal component analysis
; sea
; sea urchin
; Animals
; Antarctic Regions
; Calcification, Physiologic
; Embryo, Nonmammalian
; Embryonic Development
; Environmental Monitoring
; Global Warming
; Hydrogen-Ion Concentration
; Larva
; Oceans and Seas
; Principal Component Analysis
; Sea Urchins
; Seawater
; Antarctica
; East Antarctica
; Echinoidea
; Invertebrata
; Sterechinus neumayeri
英文摘要: Stenothermal polar benthic marine invertebrates are highly sensitive to environmental perturbations but little is known about potential synergistic effects of concurrent ocean warming and acidification on development of their embryos and larvae. We examined the effects of these stressors on development to the calcifying larval stage in the Antarctic sea urchin Sterechinus neumayeri in embryos reared in present and future (2100+) ocean conditions from fertilization. Embryos were reared in 2 temperature (ambient: -1.0 °C, + 2 °C : 1.0 °C) and 3 pH (ambient: pH 8.0, -0.2-0.4 pH units: 7.8,7.6) levels. Principle coordinates analysis on five larval metrics showed a significant effect of temperature and pH on the pattern of growth. Within each temperature, larvae were separated by pH treatment, a pattern primarily influenced by larval arm and body length. Growth was accelerated by temperature with a 20-28% increase in postoral (PO) length at +2 °C across all pH levels. Growth was strongly depressed by reduced pH with a 8-19% decrease in PO length at pH 7.6-7.8 at both temperatures. The boost in growth caused by warming resulted in larvae that were larger than would be observed if acidification was examined in the absence of warming. However, there was no significant interaction between these stressors. The increase in left-right asymmetry and altered body allometry indicated that decreased pH disrupted developmental patterning and acted as a teratogen (agent causing developmental malformation). Decreased developmental success with just a 2 °C warming indicates that development in S. neumayeri is particularly sensitive to increased temperature. Increased temperature also altered larval allometry. Altered body shape impairs swimming and feeding in echinoplutei. In the absence of adaptation, it appears that the larval phase may be a bottleneck for survivorship of S. neumayeri in a changing ocean in a location where poleward migration to escape inhospitable conditions is not possible. © 2013 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62412
Appears in Collections: 影响、适应和脆弱性
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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; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia; Australian Antarctic Division, Kingston, Tasmania, Australia; CSIRO Marine and Atmospheric Research, Hobart, Tasmania, Australia; Department of Marine Biology, University of Otago, Dunedin, New Zealand
Recommended Citation:
Byrne M.,Ho M.A.,Koleits L.,et al. Vulnerability of the calcifying larval stage of the Antarctic sea urchin Sterechinus neumayeri to near-future ocean acidification and warming[J]. Global Change Biology,2013-01-01,19(7)