DOI: 10.1111/gcb.12251
论文题名: Natural variation and the capacity to adapt to ocean acidification in the keystone sea urchin Strongylocentrotus purpuratus
作者: Kelly M.W. ; Padilla-Gamiño J.L. ; Hofmann G.E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 8 起始页码: 2536
结束页码: 2546
语种: 英语
英文关键词: Climate change
; Local adaptation
; Marine invertebrates
; Ocean acidification
; Quantitative genetics
; Rapid evolution
Scopus关键词: carbon dioxide
; carbonic acid derivative
; sea water
; acidification
; body size
; climate change
; echinoderm
; genetic variation
; growth rate
; heritability
; keystone species
; larva
; local adaptation
; pH
; population growth
; water chemistry
; adaptation
; animal
; article
; body size
; chemistry
; climate change
; genetic polymorphism
; genetics
; larva
; local adaptation
; marine invertebrates
; metabolism
; ocean acidification
; pH
; phenotype
; physiology
; quantitative genetics
; rapid evolution
; Strongylocentrotus purpuratus
; United States
; climate change
; local adaptation
; marine invertebrates
; ocean acidification
; quantitative genetics
; rapid evolution
; Adaptation, Physiological
; Animals
; Body Size
; California
; Carbon Dioxide
; Carbonates
; Hydrogen-Ion Concentration
; Larva
; Phenotype
; Polymorphism, Genetic
; Seawater
; Strongylocentrotus purpuratus
; Echinoidea
; Invertebrata
; Strongylocentrotus purpuratus
英文摘要: A rapidly growing body of literature documents the potential negative effects of CO2-driven ocean acidification (OA) on marine organisms. However, nearly all this work has focused on the effects of future conditions on modern populations, neglecting the role of adaptation. Rapid evolution can alter demographic responses to environmental change, ultimately affecting the likelihood of population persistence, but the capacity for adaptation will differ among populations and species. Here, we measure the capacity of the ecologically important purple sea urchin Strongylocentrotus purpuratus to adapt to OA, using a breeding experiment to estimate additive genetic variance for larval size (an important component of fitness) under future high-pCO2/low-pH conditions. Although larvae reared under future conditions were smaller than those reared under present-day conditions, we show that there is also abundant genetic variation for body size under elevated pCO2, indicating that this trait can evolve. The observed heritability of size was 0.40 ± 0.32 (95% CI) under low pCO2, and 0.50 ± 0.30 under high-pCO2 conditions. Accounting for the observed genetic variation in models of future larval size and demographic rates substantially alters projections of performance for this species in the future ocean. Importantly, our model shows that after incorporating the effects of adaptation, the OA-driven decrease in population growth rate is up to 50% smaller, than that predicted by the 'no-adaptation' scenario. Adults used in the experiment were collected from two sites on the coast of the Northeast Pacific that are characterized by different pH regimes, as measured by autonomous sensors. Comparing results between sites, we also found subtle differences in larval size under high-pCO2 rearing conditions, consistent with local adaptation to carbonate chemistry in the field. These results suggest that spatially varying selection may help to maintain genetic variation necessary for adaptation to future OA. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62389
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106-9620, United States
Recommended Citation:
Kelly M.W.,Padilla-Gamiño J.L.,Hofmann G.E.. Natural variation and the capacity to adapt to ocean acidification in the keystone sea urchin Strongylocentrotus purpuratus[J]. Global Change Biology,2013-01-01,19(8)