DOI: 10.1016/j.ecoenv.2020.110400
论文题名: Multigenerational plasticity of Daphnia magna under thermal stress across ten generations
作者: Im H. ; Na J. ; Jung J.
刊名: Ecotoxicology and Environmental Safety
ISSN: 1476513
出版年: 2020
卷: 194 语种: 英语
英文关键词: Daphnid
; Life history
; Oxidative stress
; Reproduction
; Somatic growth
Scopus关键词: crustacean
; growth rate
; growth response
; life history trait
; oxidative stress
; reproduction
; temperature effect
; adult
; article
; body growth
; controlled study
; Daphnia magna
; epigenetics
; female
; life history trait
; nonhuman
; oxidative stress
; progeny
; temperature stress
; Daphnia magna
; Daphniidae
英文摘要: The effects of increasing temperature owing to thermal discharge and global warming on zooplanktons such as Daphnia magna are a growing concern. The purpose of this study was to evaluate the effects of elevated temperature (25 °C) on oxidative stress responses, growth, and reproduction of D. magna across 10 generations. The number of offspring per female at 21 d was significantly increased and the rate of adult somatic growth (5–21 d) was decreased in the F0 generation at 25 °C compared with those at the reference temperature 20 °C. However, the F3 generation showed the lowest number of offspring and the highest adult somatic growth rate and oxidative stress responses (5 d) at 25 °C. Moreover, all life-history traits seemed to recover to the levels of the control group from the F6 generation at 20 °C. These findings suggest that D. magna under continuous thermal stress exhibits non-adaptive responses in the early generations (F0–F3) and changes to adaptive responses in the later generations (F6–F9). However, the underlying epigenetic mechanism should be identified in the future. © 2020 Elsevier Inc. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158333
Appears in Collections: 气候变化与战略
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作者单位: Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, South Korea
Recommended Citation:
Im H.,Na J.,Jung J.. Multigenerational plasticity of Daphnia magna under thermal stress across ten generations[J]. Ecotoxicology and Environmental Safety,2020-01-01,194