DOI: 10.1007/s11356-018-4021-8
论文题名: Oxythermal window drastically constraints the survival and development of European sturgeon early life phases
作者: Delage N. ; Couturier B. ; Jatteau P. ; Larcher T. ; Ledevin M. ; Goubin H. ; Cachot J. ; Rochard E.
刊名: Environmental Science and Pollution Research
ISSN: 9441344
出版年: 2020
卷: 27, 期: 4 语种: 英语
英文关键词: Behaviour
; Development
; Global warming
; Mortality
; Oxygen
; Sturgeon
; Temperature
Scopus关键词: adaptation
; climate change
; fish
; global warming
; mortality
; oxygen
; phenology
; sublethal effect
; survival
; temperature effect
; Dordogne Basin
; France
; Acipenser sturio
英文摘要: European sturgeon Acipenser sturio is an anadromous fish species being classified “critically endangered” with only one remaining population in the Gironde-Garonne-Dordogne basin (France). In the global warming context, this paper aims to determine the sensitivity of A. sturio early life phases to temperature and oxygen saturation. Embryos were experimentally exposed to a combination of temperature (12 to 30 °C) and oxygen (30 to 90% O2 saturation) conditions. Lethal and sublethal effects were evaluated using embryonic mortality, hatching success, malformation rate, yolk sac resorption, tissue development and swimming speed. Embryonic survival peaked at 20 °C and no survival was recorded at 30 °C regardless of the associated oxygen saturation. No hatching occurred at 50% O2 sat or below regardless of temperature. Malformation frequency appeared to be minimum at 20 °C and 90% O2 sat. Swimming speed peaked at 16 °C. The temperature optimum of early life phases of A. sturio was determined to be close to 20 °C. Its upper tolerance limit is between 26 and 30 °C and its lower tolerance limit is below 12 °C. Oxygen depletion induces sublethal effects at 70% O2 sat and lethal effects at 50% O2 sat. Within the spawning period in the Gironde-Garonne-Dordogne basin, we identified yearly favourable oxythermal windows. Consequences of climate change would depend of the phenological adaptation of the species for its spawning period. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159636
Appears in Collections: 气候变化与战略
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作者单位: IRSTEA EABX, Aquatic Ecosystems and Global Changes Research Unit, 50 Avenue de Verdun, Cestas, 33612, France; University of Bordeaux, UMR CNRS EPOC 5805, Allée Geoffroy Saint-Hilaire - CS 50023, Pessac Cedex, 33615, France; Agence Française de la Biodiversité, Pôle Gest’Aqua, 65 rue de St Brieuc, Rennes Cedex, 35042, France; INRA,UMR 703 APEX, Oniris La Chantrerie, Nantes, France; LUNAM Université, École nationale vétérinaire, agro-alimentaire et de l’alimentation Nantes-atlantique (Oniris), Nantes, France
Recommended Citation:
Delage N.,Couturier B.,Jatteau P.,et al. Oxythermal window drastically constraints the survival and development of European sturgeon early life phases[J]. Environmental Science and Pollution Research,2020-01-01,27(4)