九州大学大学院生物資源環境科学府資源生物科学専攻昆虫学研究室
Entomological Laboratory, Division of Agrobiological Sciences, Department of Bioresource Science, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
Resource limitation and quality of animal dung is important factor to intraspecific and interspecific competition in dung beetles. For rapid approach to high quality dung, preference to volatiles of dung is also important. However, the preference to dung in Japanese dung beetles has not been studied well. To clarify the preference to dung, we conducted field survey in May–November 2019 at the Ito Campus of Kyushu University, Fukuoka, Japan, using bait traps with pig and cow dung. The dominant dung beetles, Phelotrupes laevistriatus (Geotrupidae), Onthophagus atripennis (Scarabaeidae), and O. ater, were significantly more abundant in pig dung than in cow dung. In comparing two different cow dung, high nitrogen (cow dung A) vs low nitrogen (cow dung B), these beetles were more abundant in the cow dung B. As the volatiles emitted from animal dung differed not only in the animal species but also in feed, these preferences to different dung should be caused by dung volatiles.
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