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Author (up) Miyatake, T.; Okada, K.; & Harano, T doi  openurl
  Title Negative relationship between ambient temperature and death-feigning intensity in adult Callosobruchus maculatus and Callosobruchus chinensis Type Journal Article
  Year 2008 Publication Physiological Entomology Abbreviated Journal  
  Volume 33 Issue 1 Pages 83 - 88  
  Keywords Anti-predator; behaviour; bean beetle; playing dead; tonic immobility  
  Abstract Although the effects of temperature on insect behaviours are studied frequently, few studies report on the relationship between temperature and anti-predator behaviours. A negative relationship between ambient temperature and the intensity of death-feigning is found in adults of two seed beetle species, Callosobruchus maculatus (F.) and C. chinensis (L.) (Coleoptera: Bruchidae). Two traits representing the intensity of immobility, the frequency and the duration of death-feigning, are measured at different temperatures. Almost all adults feign death at 15 °C, but the frequency of death-feigning decreases at higher temperatures in C. maculatus, whereas all C. chinensis adults show this behaviour at 15 and 20 °C and almost all show it at 25 °C, but the frequency of death-feigning decreases at 30 and 35 °C. The difference between the two species might be due to the specific strain of each species used in the experiment. The duration of death-feigning is correlated negatively with the increase in ambient temperature in both species. The frequency at which adults feigned death is higher in females than in males in both species, but the duration of death-feigning is higher in females than in males only in C. maculatus. The relationships between temperature and death-feigning behaviours are discussed from physiological and ecological viewpoints.  
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  Corporate Author Thesis  
  Publisher Blackwell Publishing Place of Publication Editor  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number GA Highlands @ lblumke @ Serial 102  
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