Thermal requirements (lower temperature threshold and thermal constant) for the development of each developmental stage of the predator Harmonia axyridis (Pallas) were studied on Aphis fabae Scopoli and Dysaphis crataegi (Kaltenbach) under controlled laboratory conditions. The effect of temperature (15, 20, 25, and 30°C) and prey species was examined on pre-imaginal developmental duration and life cycle (pre-oviposition period included) of the predator. Our results suggest comparable thermal requirements for the development of H. axyridis on the particular prey and when compared with other aphid species. The total preimaginal development of H. axyridis, at 15, 20, and 30°C, and its life cycle, at 15 and 30°C, are shorter on D. crataegi than on A. fabae.
How to translate text using browser tools
1 December 2011
Thermal Requirements and Effect of Temperature and Prey on the Development of the Predator Harmonia axyridis
George J. Stathas,
Dimitrios C. Kontodimas,
Filitsa Karamaouna,
Stavros Kampouris
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
Environmental Entomology
Vol. 40 • No. 6
December 2011
Vol. 40 • No. 6
December 2011
aphids
predator
pumpkin
rearing
thermal thresholds