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1 July 2001 Effects of Starvation on Death-Feigning in Adults of Cylas formicarius (Coleoptera: Brentidae)
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Abstract

Effects of starvation on death-feigning behavior, or thanatosis, were observed in adults of the sweetpotato weevil, Cylas formicarius (F.). A significantly lower proportion of death-feigned adults was observed in starved weevils compared with unstarved controls in both sexes. However, females needed a longer starvation period than males to show the decreased proportion of death-feigning. This contrast between males and females was caused by a differential tolerance of the sexes for starvation, because males died earlier than females without food. Starved male weevils had a shorter duration to recover from the death-feigning. There may be situations where C. formicarius gives priority to assuring food consumption compared with escaping from predators.

Takahisa Miyatake "Effects of Starvation on Death-Feigning in Adults of Cylas formicarius (Coleoptera: Brentidae)," Annals of the Entomological Society of America 94(4), 612-616, (1 July 2001). https://doi.org/10.1603/0013-8746(2001)094[0612:EOSODF]2.0.CO;2
Received: 9 February 2001; Accepted: 1 April 2001; Published: 1 July 2001
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