Patterns of population fluctuations of the mulberry tiger moth, Thanatarctiaimparilis (Butler) (Lepidoptera : Arctiidae) and effect of predation by the carabid beetle, Parena perforata (Bates) (Coleoptera : Carabidae) in the Kinki region

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概要

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• Population changes of of the mulberry tiger moth, Thanatarctia imparilis (Butler) (Lepidoptera : Arctiidae) and its carabid predator, Parena perforata (Bates) (Colcoptera : Carabidae) were surveyed at three disjunct study sites in the Kinkiregion, western Japan, from 1989 to 2001. At one of the three study sites, the population density of T. imparilis increased gradually, thereafter, decreased drastically, and then increased again. At this site, the number of P. perforata per prey colony changed closely with the density of T. imparilis. During the decline phase of T. imparilis, P. perforatawas observed in over 80% of the prey colonies, and many egg masses of the beetle were deposited on each prey colony. It was observed that the effect of the predation acted strongly during the decline phase of T. imparilis. At another site, moreover, P. perforata was observed in over 80% of the prey colonies during the period of population decline of T. imparilis. At the third site of the three, however, the carabid beetles were observed in less than 10% of the prey colonies even during the decline phase of T. imparilis. At this site, the population density of T. imparilis decreased after high density had persisted for a few years and started to increase after low density had persisted for a few years. In addition, the change in amplitude between the highest density and the lowest density was ca. one-third that at the other two sites. It was suggested that the predator-prey interaction constitutes an important factor in explaining the different behaviors of T. imparilis populations at different localities.

• 日本応用動物昆虫学会の論文
• 2003-02-25

著者

• Hondo M

  Agros Corporation:(present Address)sumitomo Chemical Industry Co. Ltd

• Hondo Masaru

  Agros Corporation Taharazuka Research Center Sumitomo Chanical Industry Co. Ltd.:agros Corporation

関連論文

• Parasitoid Attack on a Pyramid-Shaped Egg Mass of the Peacock Butterfly, Inachis io geisha (Lepidoptera: Nymphalidae)
• Mortality of Post-Overwintered Larvae of the Mulberry Tiger Moth, Thanatarctia imparilis(BUTLER)(Lepidoptera:Arctiidae)Caused by Parasitoids and Pathogens
• Effect of Predation by the Specialist Predator, Parena perforata BATES (Coleoptera: Carabidae) on Population Changes of the Mulberry Tiger Moth, Thanatarctia imparilis BUTLER (Lepidoptera: Arctiidae)
• Patterns of population fluctuations of the mulberry tiger moth, Thanatarctiaimparilis (Butler) (Lepidoptera : Arctiidae) and effect of predation by the carabid beetle, Parena perforata (Bates) (Coleoptera : Carabidae) in the Kinki region

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