Journal of Economic Entomology (1998) 91, 439-443

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Seiichi Moriya and Satoshi Hiroyoshi (1998)
Flight and locomotion activity of the sweetpotato weevil (Coleoptera: Brentidae) in relation to adult age, mating status, and starvation
Journal of Economic Entomology 91 (2), 439-443
Abstract: The flight and walking performance of Cylas formicarius (F.) adults were evaluated with respect to their age, mating status, and the degree of starvation by using a flight mill and an actograph system. Males showed a much higher flight ability than females in all ages tested between 0 and 42 d old after spontaneous exiting from the sweetpotato root. Locomotion activity of the male was also higher than that of the female for 0- to 28-d-old adults, but the difference was not as large as that of flight activity. Except for the effects of a 3-d starvation period on locomotion, mating status and starvation with only water for 1-3 d had little affect on flight or locomotion ability. No distinct signs of migratory behavior of adults were detected. Females seemed to disperse mainly by walking because of their extremely low flight ability.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Seiichi Moriya

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


Pest and/or beneficial records:

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


Cylas formicarius Sweet potato (Ipomoea batatas)