Population Dynamics of a Phytophagous Lady-beetle, Epilachna vigintioctopunctata(FABRICIUS)(Coleoptera:Coccinellidae), Living in Spatio-temporally Heterogeneous Habitats : II. Seasonal Changes in Adult Movement and Spatial Distribution of the Population

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概要

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• The population process of the phytophagous lady beetle, Epilachna vigintioctopunctata, was studied in spatio-temporally heterogeneous habitats in order to clarify the seasonal changes in interpatch movement of adults, density effect on the movement, and the effect of the movement on the spatial distributions of the population. The population censuses were carried out for three years in an area of about 15 ha containing 18 distinguishable patches of host plants. The rate of interpatch movement of females tended to be highest in the first generation adults, moderate in the second generation adults, and lowest in the over-wintered adults. The movement rate of females tended to increase incrementally with adult density. This density-dependent interpatch movement of females which accompanied mortality in the dispersal process reduced the patch variation in the densities of females and eggs, and was thought to be the most important foctor in stabilizing the yearly fluctuation of population density.

• 日本応用動物昆虫学会の論文
• 1993-05-25

著者

• Hirano K

  Laboratory Of Applied Entomology And Nematology School Of Agriculture Nagoya University:prof.fujii L

• Hirano Kohji

  Laboratory Of Applied Entomology And Nematology School Of Agriculture Nagoya University

関連論文

• Population Dynamics of a Phytophagous Lady-Beetle, Epilachna vigintioctopunctata(Fabricius), Living in Spatio-Temporally Heterogeneous Habitats.III.Effects of Habitat Structure on Population Dynamics
• Population Dynamics of a Phytophagous Lady-beetle, Epilachna vigintioctopunctata(FABRICIUS)(Coleoptera:Coccinellidae), Living in Spatio-temporally Heterogeneous Habitats : II. Seasonal Changes in Adult Movement and Spatial Distribution of the Population
• A New Marking Method Using a Sewing Needle : Effects on Survival Rate of Twenty-Eight-Spotted Lady-Beetles, Henosepilachna vigintioctopunctata FABRICIUS (Coleoptera : Coccinellidae)

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