Effect of temperature on development and reproduction in Gastrophysa viridula (Coleoptera: Chrysomelidae)
2003
Honek, A. | Martinkova, Z. (Vyzkumny Ustav Rostlinne Vyroby, Prague (Czech Republic)) | Jarosik, V.
The duration of development, reproduction and longevity of Gastrophysa viridula was measured at constant temperatures and a long day photoperiod. At 18, 21.5, 25, and 28 deg C the average duration of development of the egg, larval and pupal stages and total development time (28.2, 21.6, 16.1, 15.0 days) decreased with temperature but the proportion of time spent in the egg, larval and pupal stages did not significantly change with temperature. The total development required 304.6 day degrees above the lower development threshold of 7.1 deg C. Pre-adult mortality and the rate of oviposition increased, while the duration of oviposition, net reproduction rate and mean generation time decreased with increasing temperature. The intrinsic rate of population increase increased from 0.111 at 18 deg C to 0.179 at 28 deg C. The average generation time was 496 day degrees on the physiological time scale.
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