Insect Science (2008) 15, 163-166

Mujgan Kivan (2008)
Development rate and lower temperature threshold in the eggs of Eurygaster integriceps (Heteroptera: Scutelleridae)
Insect Science 15 (2), 163-166
Abstract: The sunn pest, Eurygaster integriceps Put. has a wide distribution in the Palearctic region. It is the most important pest problem of wheat in Turkey. The objective of this study was to attain better knowledge of the development of the sunn pest eggs. The lower temperature threshold and development rate of eggs were determined at 17, 20, 23, 26 and 32°C ± 1°C in the laboratory. A linear model was used to describe the developmental rate and temperature. The egg development required 90.9 degree-days above the theoretical threshold of 11.7°C. The development time was 17.6 ± 0.1 days at 17°C, and 4.5 ± 0.01 days at 32°C. Incubation time was inversely related to temperature. The study showed that the eggs of E. integriceps needed shorter periods of time to complete their development than immature stages of their parasitoids Trissolcus spp.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Müjgan Kivan

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation
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.
	Eurygaster integriceps	Wheat (Triticum)	Turkey
Trissolcus (genus - parasitoids)	Eurygaster integriceps	Wheat (Triticum)	Turkey