globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12929
Scopus记录号: 2-s2.0-85042525702
论文题名:
Daphnia females adjust sex allocation in response to current sex ratio and density
作者: Booksmythe I.; Gerber N.; Ebert D.; Kokko H.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:5
起始页码: 629
结束页码: 637
语种: 英语
英文关键词: Cyclical parthenogen ; Daphnia magna ; population density ; sex allocation ; sex ratio adjustment
Scopus关键词: Daphnia ; Daphnia magna
英文摘要: Cyclical parthenogenesis presents an interesting challenge for the study of sex allocation, as individuals’ allocation decisions involve both the choice between sexual and asexual reproduction, and the choice between sons and daughters. Male production is therefore expected to depend on ecological and evolutionary drivers of overall investment in sex, and those influencing male reproductive value during sexual periods. We manipulated experimental populations, and made repeated observations of natural populations over their growing season, to disentangle effects of population density and the timing of sex from effects of adult sex ratio on sex allocation in cyclically parthenogenetic Daphnia magna. Male production increased with population density, the major ecological driver of sexual reproduction; however, this response was dampened when the population sex ratio was more male-biased. Thus, in line with sex ratio theory, we show that D. magna adjust offspring sex allocation in response to the current population sex ratio. © 2018 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107465
Appears in Collections:气候减缓与适应

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作者单位: Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich, Switzerland; Tvärminne Zoological Station, J.A. Palmenintie 260Hanko, Finland; Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland; Department of Environmental Sciences, Zoology, University of Basel, Vesalgasse 1, Basel, Switzerland

Recommended Citation:
Booksmythe I.,Gerber N.,Ebert D.,et al. Daphnia females adjust sex allocation in response to current sex ratio and density[J]. Ecology Letters,2018-01-01,21(5)
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