DOI: 10.1111/gcb.12133
论文题名: Response to ocean acidification in larvae of a large tropical marine fish, Rachycentron canadum
作者: Bignami S. ; Sponaugle S. ; Cowen R.K.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 4 起始页码: 996
结束页码: 1006
语种: 英语
英文关键词: Cobia
; Development
; Fish larvae
; Growth
; Hypercapnia
; Ocean acidification
; Otoliths
; Rachycentron canadum
Scopus关键词: acid
; acidification
; ecological impact
; economic impact
; environmental conditions
; larva
; marine ecosystem
; ontogeny
; otolith
; perciform
; taxonomy
; animal
; article
; chemistry
; growth, development and aging
; larva
; marine biology
; Perciformes
; physiology
; sea
; Acids
; Animals
; Larva
; Marine Biology
; Oceans and Seas
; Perciformes
; Pisces
; Rachycentron canadum
英文摘要: Currently, ocean acidification is occurring at a faster rate than at any time in the last 300 million years, posing an ecological challenge to marine organisms globally. There is a critical need to understand the effects of acidification on the vulnerable larval stages of marine fishes, as there is potential for large ecological and economic impacts on fish populations and the human economies that rely on them. We expand upon the narrow taxonomic scope found in the literature today, which overlooks many life history characteristics of harvested species, by reporting on the larvae of Rachycentron canadum (cobia), a large, highly mobile, pelagic-spawning, widely distributed species with a life history and fishery value contrasting other species studied to date. We raised larval cobia through the first 3 weeks of ontogeny under conditions of predicted future ocean acidification to determine effects on somatic growth, development, otolith formation, swimming ability, and swimming activity. Cobia exhibited resistance to treatment effects on growth, development, swimming ability, and swimming activity at 800 and 2100 μatm pCO2. However, these scenarios resulted in a significant increase in otolith size (up to 25% larger area) at the lowest pCO2 levels reported to date, as well as the first report of significantly wider daily otolith growth increments. When raised under more extreme scenarios of 3500 and 5400 μatm pCO2, cobia exhibited significantly reduced size-at-age (up to 25% smaller) and a 2-3 days developmental delay. The robust nature of cobia may be due to the naturally variable environmental conditions this species currently encounters throughout ontogeny in coastal environments, which may lead to an increased acclimatization ability even during long-term exposure to stressors. © 2012 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62497
Appears in Collections: 影响、适应和脆弱性
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作者单位: Division of Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL, 33149, United States
Recommended Citation:
Bignami S.,Sponaugle S.,Cowen R.K.. Response to ocean acidification in larvae of a large tropical marine fish, Rachycentron canadum[J]. Global Change Biology,2013-01-01,19(4)