Acta Entomologica Sinica (2003) 46, 318-324

Jian-Rong Wei, Zhong-Qi Yang and Zhi Su (2003)
[Use of life table to evaluate control of the fall webworm by the parasitoid Chouioia cunea (Hymenoptera : Eulophidae)]
Acta Entomologica Sinica 46 (3), 318-324
Abstract: In order to evaluate biocontrol effect of an invasive pest, the fall webworm Hyphantria cunea , by the parasitoid Chouioia cunea (Hymenoptera: Eulophidae), life tables of four generations of the pest were consecutively studied for two years in Yantai, Shandong Province. Two experimental sites were selected where the fall webworm was still a big problem but not so serious as some years ago. In one of the sites the parasitoid was released twice in each fall webworm generation , at the beginning and peak period of pupation, while the other site served as the control. The average data of observations for the 1st generations of the fall webworm in two years were combined to make one life table for the test site and the average data of the observations for the 2nd generation of fall webworm were used to make another life table. Similarly, the average data of observations from the control site were used to make two other life tables. The results show that the trend indexes of population (I-value) of 1st and 2nd generations of the fall webworm at the test site, 0.29 and 0.14 respectively, were significantly lower than that at the control site, 8.74 and 4.48 respectively. The pest population clearly declined at the test site and appeared to have been effectively controlled by the parasitoid.
(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): Jian-Rong Wei, Zhong-Qi Yang

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Hyphantria cunea		China (NE)
Chouioia cunea (parasitoid)	Hyphantria cunea		China (NE)