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- Title
Effects of temperature on life history traits of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan).
- Authors
Liu, Xin; Beyrend-Dur, Delphine; Dur, Gaël; Ban, Syuhei
- Abstract
Effects of temperature on life history traits of the dominant calanoid Eodiaptomus japonicus were examined to evaluate its population dynamics in Lake Biwa (Japan). Embryonic and post-embryonic development times and reproduction were determined in the laboratory at four temperatures (10, 15, 20 and 25 °C) and under ad libitum food condition. Post-embryonic development time of E. japonicus from hatching to adult female decreased with increasing temperature from 67.9 to 15.1 days. Males reached the adult stage 1-6 days earlier than the females. Only 15 % of the individuals survived until the adult stage at 10 °C, while 40 % did so at >15 °C. Egg production also depended on temperature. A power function of temperature on instantaneous growth rate predicted a value of <0.06 day when water temperature was below 10 °C, suggesting that E. japonicus retards its growth during winter. The null value obtained at 8.6 °C for the computed population growth rate supports the idea of an overwintering strategy. Responses of life history traits to temperature suggested that in conditions where there was no food limitation, E. japonicus in Lake Biwa would be able to take advantage of the rise of temperature predicted in the context of global climate change.
- Subjects
BIWA Lake (Japan); TEMPERATURE effect; POPULATION dynamics; COPEPODA development; COPEPODA; REPRODUCTION; EGG incubation; CLIMATE change
- Publication
Limnology, 2014, Vol 15, Issue 1, p85
- ISSN
1439-8621
- Publication type
Article
- DOI
10.1007/s10201-013-0417-9