European Journal of Entomology (2003) 100, 295-300

Alois Honek, Vojtech Jarosik and Zdenka Martinkova (2003)
Effect of temperature on development and reproduction in Gastrophysa viridula (Coleoptera: Chrysomelidae)
European Journal of Entomology 100 (2), 295-300
Abstract: The duration of development, reproduction and longevity of Gastrophysa viridula (DeGeer) was measured at constant temperatures and a long day photoperiod. At 18, 21.5, 25, and 28°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. Total development required 304.6 day degrees above the lower development threshold of 7.1° C. Pre-adult mortality and the rate of oviposition increased, and the duration of oviposition decreased with increasing temperature. Net reproduction rate Ro decreased (from 157 female eggs at 18°C to 75 female eggs at 28°C) and mean generation time T also decreased (from 45.5 days at 18°C to 24.1 days at 28°C) with increasing temperature. The intrinsic rate of population increase rm increased with temperature (from 0.111 at 18°C to 0.179 at 28°C). On a physiological time scale the average generation time T was 496 day degrees.
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Database assignments for author(s): Alois Honek, Zdenka Martinkova

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rumex crispus (weed)
	Rumex obtusifolius (weed)		Czech Republic
Gastrophysa viridula (weed bioagent)	Rumex crispus (weed)
Gastrophysa viridula (weed bioagent)	Rumex obtusifolius (weed)		Czech Republic