Population Ecology (2009) 51, 99-104

Koichi Fujii (2009)
Cause of egg mortality in azuki bean weevils (Callosobruchus chinensis): physical or chemical?
Population Ecology 51 (1), 99-104
Abstract: The cause of high egg mortality at high adult density in azuki bean weevil is still controversial. It may be physical, as a result of adult trampling, or chemical, as a result of substance(s) secreted by adults and coated on the bean surface. In this study, I first constructed simple mathematical models based on each mechanism, which could predict the change of egg hatchability oviposited on different dates at different adult densities. I then devised an experimental method that could identify the fate of eggs oviposited on different dates. The experimental results showed that egg mortality was most likely caused by adult trampling.
(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): Koichi Fujii

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