DOI: 10.1111/gcb.12197
论文题名: Hypoxia impacts large adults first: Consequences in a warming world
作者: Clark M.S. ; Husmann G. ; Thorne M.A.S. ; Burns G. ; Truebano M. ; Peck L.S. ; Abele D. ; Philipp E.E.R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 7 起始页码: 2251
结束页码: 2263
语种: 英语
英文关键词: Antioxidant
; Mollusc
; Protein oxidation
; Sarcopenia
; Tissue scaling
Scopus关键词: heat shock protein
; oxygen
; antioxidant
; biodiversity
; hypoxia
; marine environment
; mollusc
; oxidation
; oxygen
; physiology
; protein
; warming
; adaptation
; aging
; animal
; anoxia
; Antarctica
; apoptosis
; article
; bivalve
; gene expression
; genetics
; greenhouse effect
; growth, development and aging
; metabolism
; organ size
; oxidative stress
; pathology
; pathophysiology
; physiology
; survival
; Adaptation, Physiological
; Aging
; Animals
; Anoxia
; Antarctic Regions
; Apoptosis
; Bivalvia
; Gene Expression
; Global Warming
; Heat-Shock Proteins
; Organ Size
; Oxidative Stress
; Oxygen
; Survival Analysis
; Animalia
; Bivalvia
; Laternula elliptica
; Mollusca
英文摘要: Future oceans are predicted to contain less oxygen than at present. This is because oxygen is less soluble in warmer water and predicted stratification will reduce mixing. Hypoxia in marine environments is thus likely to become more widespread in marine environments and understanding species-responses is important to predicting future impacts on biodiversity. This study used a tractable model, the Antarctic clam, Laternula elliptica, which can live for 36 years, and has a well-characterized ecology and physiology to understand responses to hypoxia and how the effect varied with age. Younger animals had a higher condition index, higher adenylate energy charge and transcriptional profiling indicated that they were physically active in their response to hypoxia, whereas older animals were more sedentary, with higher levels of oxidative damage and apoptosis in the gills. These effects could be attributed, in part, to age-related tissue scaling; older animals had proportionally less contractile muscle mass and smaller gills and foot compared with younger animals, with consequential effects on the whole-animal physiological response. The data here emphasize the importance of including age effects, as large mature individuals appear to be less able to resist hypoxic conditions and this is the size range that is the major contributor to future generations. Thus, the increased prevalence of hypoxia in future oceans may have marked effects on benthic organisms' abilities to persist and this is especially so for long-lived species when predicting responses to environmental perturbation. © 2013 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62408
Appears in Collections: 影响、适应和脆弱性
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作者单位: British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom; Institute of Clinical Molecular Biology, Christian-Albrechts University Kiel, Schittenhelmstrasse 12, Kiel, 24105, Germany; Marine Biology and Ecology Research Centre, University of Plymouth, Davy Building, Drake Circus, Plymouth, PL4 8AA, United Kingdom; Functional Ecology, Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
Recommended Citation:
Clark M.S.,Husmann G.,Thorne M.A.S.,et al. Hypoxia impacts large adults first: Consequences in a warming world[J]. Global Change Biology,2013-01-01,19(7)