Effects of temperature on life history traits of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

Authored by Xin Liu, Delphine Beyrend-Dur, Gael Dur, Syuhei Ban

Date Published: 2014

DOI: 10.1007/s10201-013-0417-9

Sponsors: Japanese Society for the Promotion of Science (JSPS)

Platforms: No platforms listed

Model Documentation: Other Narrative Mathematical description

Model Code URLs: Model code not found

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 A degrees 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 A degrees C, while 40 \% did so at > 15 A degrees C. Egg production also depended on temperature. A power function of temperature on instantaneous growth rate predicted a value of < 0.06 day(-1) when water temperature was below 10 A degrees C, suggesting that E. japonicus retards its growth during winter. The null value obtained at 8.6 A degrees 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.

Tags

Population-dynamics Individual-based model Embryonic-development Egg-production Eurytemora-affinis copepoda Acartia-tonsa copepoda Fresh-water copepods Calanus-helgolandicus Eudiaptomus-gracilis Naupliar development