Rapid evolution of life history of two water fleas in response to inter-specific competition

Jiasheng YANG; Jianan LI; Ailing YAN; Haoran ZHANG; Qianqian WEI; Xiaodong JIANG

doi:10.1007/s00343-026-5383-2

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Rapid evolution of life history of two water fleas in response to inter-specific competition

Updated：2026-04-27

- Rapid evolution of life history of two water fleas in response to inter-specific competition
- Rapid evolution of life history of two water fleas in response to inter-specific competition
- 海洋湖沼学报(英文) 2026年页码：1-12
- Affiliations：
  
  1.State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
  2.Shanghai Engineering Research Center of Water Environment Simulation and Ecological Restoration, Shanghai Academy of Environment Sciences, Shanghai 201114, China
  3.Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin 12587, Germany
- Author bio：
  
  yailing99@163.com
  xdjiang@bio.ecnu.edu.cn
- Funds：
  
  the National Natural Science Foundation of China(32470556;32571742;32301413;32401398);the National Key R&D Program of China(2024YFF0808800);the Science and Technology Commission of Shanghai Municipality(21DZ1200900;22DZ1202600);the Shanghai Engineering Research Center of Water Environment Simulation and Ecological Restoration(WESER-202406);the Ministry of Education Discipline Breakthrough Pilot Project(JYB2025XDXM907);the Shanghai Environmental Monitoring Center
- DOI：10.1007/s00343-026-5383-2
  中图分类号：
- 收稿：2025-10-02，
  
  网络首发：2026-04-27，
- Accepted：
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Jiasheng YANG, Jianan LI, Ailing YAN, 等. Rapid evolution of life history of two water fleas in response to inter-specific competition[J/OL]. 海洋湖沼学报(英文), 2026,1-12.

YANG Jiasheng,LI Jianan,YAN Ailing,et al.Rapid evolution of life history of two water fleas in response to inter-specific competition[J].Journal of Oceanology and Limnology,
Jiasheng YANG, Jianan LI, Ailing YAN, 等. Rapid evolution of life history of two water fleas in response to inter-specific competition[J/OL]. 海洋湖沼学报(英文), 2026,1-12. DOI： 10.1007/s00343-026-5383-2.

YANG Jiasheng,LI Jianan,YAN Ailing,et al.Rapid evolution of life history of two water fleas in response to inter-specific competition[J].Journal of Oceanology and Limnology, DOI：.

摘要

Abstract

Interspecific competition drives ecological niche partitioning

biodiversity maintenance

and social structure evolution

yet empirical evidence for its role in rapid evolution remains limited. We examined whether competitive pressures could accelerate life history divergence in two zooplankton species

Ceriodaphnia

cornuta

and

Moina

micrura

using an experimental evolution approach. Under controlled competitive conditions

the life-history traits (survival

fecundity

and body size) were tracked in newborns over 10-d intervals across generations.

cornuta

the dominant competitor in monocultures and mixtures

responded to competition by accelerating neonate maturation

reducing neonate body size

thereby reinforcing its ecological dominance. Conversely

subordinate

micrura

delayed first reproduction and reduced adult body size to conserve resources under competitive stress. Crucially

competition induced rapid life history divergence between the species

with both employing reproductive trade-offs and morphological plasticity. This study provided direct experimental evidence for rapid evolution driven by competition

and elucidated a potential mechanism by which evolutiona

ry processes may maintain ecological equilibrium.

关键词

Keywords

references

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