Acta Entomologica Sinica (2008) 51, 516-520

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Shu-Jing Gao, Bao-Ping Pang, Xiao-Rong Zhou and Zheng-Xian Chen (2008)
[Effects of meal size and temperature on the detectable period of Sitobion avenae (Fabricius) (Hemiptera : Aphididae) in Adonia variegata (Goeze) (Coleoptera : Coccinellidae)]
Acta Entomologica Sinica 51 (5), 516-520
Abstract: The effects of meal size and temperature on the detectable period of Sitobion avenae (Fabricius) in Adonia variegata ( Goeze ) were studied using a monoclonal antibody-based indirect enzyme-linked immunosorbent assay (ELISA), which can be used to evaluate the control effects of predatory natural enemies on S. avenae in wheat fields. The results showed that the curves of the middle-decayed product of S. avenae in the gut of the predator A. variegata, exhibited single-peak modes at different temperatures and meal sizes. Temperature had a significant effect on the prey detectable period. With temperature increasing, the prey detectable period decreased. Especially when temperature was up to 30°C, the decay rate of prey increased sharply and the detectable period was very short only 1.18 day. Meal size also affected the prey detectable period remarkably. While the number of preys consumed by the predators increased from one aphid to three aphids, the prey detectable period increased from 2.80 to 4.25 days at 25°C.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Bao-Ping Pang

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

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Sitobion avenae
Hippodamia variegata (predator) Sitobion avenae