Acta Entomologica Sinica (1999) 42, 52-56

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Yunding Zou, Qinglei Meng, Gaochao Chen, Jiguang Geng and Gongming Wang (1999)
[The effect of mutual interference and spacial heterogenity on predation of adult Coccinella septempunctata]
Acta Entomologica Sinica 42 (1), 52-56
Abstract: The effect of mutual interference and heterogeneity on Coccinella septempunctata was investigated. It was found that the more wheat stalks the adult ladybugs encountered, which meant more interference was met during predation, the lower the predation efficiency was observed. The intraspecific mutual interference had more influence on predation of adult ladybug than the intraspecific mutual interference did in C. septempunctata and Harmonia axyridis. The correlation of intraspecific competition strength (I) and the number of ladybug (P) in H. axyridis could be described as I = 0. 0012 + 1. 4072 lgP for female, I = 0 . 0058 + 1.3942 lgP for male and I = - 0. 0072 + 0 . 7234 lgP for female C. septempunctata The correlation of intraspecific competition strength between C. septempunctata and H. axyridis (I) and the number of natural enemies (P) could be described as I =0.0539+ 1.1167 lgP for female C. septempunctata and female H. axyridis, I =0.0018 + 1.1944 lgP for female H. axyridis and male C. septempunctata.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)


Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation


Pest and/or beneficial records:

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


Coccinella septempunctata (predator)
Harmonia axyridis (predator)