Entomologia Sinica (2003) 10, 257-264

Yong-Xue Deng, Jin-Jun Wang, Zhi-Mo Zhao and Huai Liu (2003)
Comparative biology of two geographical populations of the southern cowpea weevil, Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) in southwest China
Entomologia Sinica 10 (4), 257-264
Abstract: The differences of bionomics and ecologies of the two populations of Callosobruchus chinensis on mung bean (Vigna radiatus) at six constant temperatures (20, 25, 28, 30, 32, 35°C) and 75% r. h. were researched. ANOVA showed that temperature affected the developmental period and fertility significantly (P < 0.05). T-test indicated there was significant difference of the combined immature stages between the two geographical populations at 25 and 32°C (P < 0.05). The average oviposition between the two geographical populations differed significantly at the same temperature (P < 0.05). At 30°C and 75% r. h., effects of 5 commercially grown legume seeds on development and reproduction of the two geographical populations of Callosobruchus chinensis (L.) were researched. The results showed that broad bean and soybean were more suitable for increase for Xichang population in terms of r_m values. The adult weight and diameter of emergency hole of the two populations were also compared. According to the differences in the characteristics of development, reproduction, and damage to host seeds between the two geographical populations, conclusion can be drawn that both are different geographical populations.
(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): Jin-Jun Wang

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Callosobruchus chinensis	Cowpea and relatives (Vigna)	China (south)