DOI: 10.1111/gcb.12815
论文题名: Transgenerational effects alleviate severe fecundity loss during ocean acidification in a ubiquitous planktonic copepod
作者: Thor P. ; Dupont S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 6 起始页码: 2261
结束页码: 2271
语种: 英语
英文关键词: Adaptation
; Copepod
; Egg production
; Ocean acidification
; Phenotypic plasticity
; Respiration
; Transgenerational transmission
Scopus关键词: acidification
; adaptation
; crustacean
; egg production
; fecundity
; marine environment
; phenotypic plasticity
; plankton
; respiration
; Calanoida
; Copepoda
; Pseudocalanus acuspes
; carbon dioxide
; sea water
; animal
; chemistry
; copepod
; female
; fertility
; male
; pH
; phenotype
; physiology
; sea
; Animals
; Carbon Dioxide
; Copepoda
; Female
; Fertility
; Hydrogen-Ion Concentration
; Male
; Oceans and Seas
; Phenotype
; Seawater
英文摘要: Ocean acidification (OA) caused by anthropogenic CO2 emission is projected for thousands of years to come, and significant effects are predicted for many marine organisms. While significant evolutionary responses are expected during such persistent environmental change, most studies consider only short-term effects. Little is known about the transgenerational effects of parental environments or natural selection on the capacity of populations to counter detrimental OA effects. In this study, six laboratory populations of the calanoid copepod Pseudocalanus acuspes were established at three different CO2 partial pressures (pCO2 of 400, 900 and 1550 μatm) and grown for two generations at these conditions. Our results show evidence of alleviation of OA effects as a result of transgenerational effects in P. acuspes. Second generation adults showed a 29% decrease in fecundity at 900 μatm CO2 compared to 400 μatm CO2 . This was accompanied by a 10% increase in metabolic rate indicative of metabolic stress. Reciprocal transplant tests demonstrated that this effect was reversible and the expression of phenotypic plasticity. Furthermore, these tests showed that at a pCO2 exceeding the natural range experienced by P. acuspes (1550 μatm), fecundity would have decreased by as much as 67% compared to at 400 μatm CO2 as a result of this plasticity. However, transgenerational effects partly reduced OA effects so that the loss of fecundity remained at a level comparable to that at 900 μatm CO2 . This also relieved the copepods from metabolic stress, and respiration rates were lower than at 900 μatm CO2 . These results highlight the importance of tests for transgenerational effects to avoid overestimation of the effects of OA. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61616
Appears in Collections: 影响、适应和脆弱性
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作者单位: Norwegian Polar Institute, Fram Centre, Tromsø, Norway; Department of Biological and Environmental Sciences, University of Gothenburg, 566 Kristineberg, Fiskebäckskil, Sweden
Recommended Citation:
Thor P.,Dupont S.. Transgenerational effects alleviate severe fecundity loss during ocean acidification in a ubiquitous planktonic copepod[J]. Global Change Biology,2015-01-01,21(6)