抄録
Geographic variation in emigration behavior at various temperatures was examined with newly collected wild strains of Drosophila melanogaster. Natural populations from various geographic regions showed three basic emigration response patterns to temperature: linear, threshold, and optimum response types. A new type of temperature-influenced emigration behavior, valley-shaped response type, was observed in specimen from Tobishima island in Tohoku. The area specific response types were found in geographically different populations. Genotype-environment interaction is an important factor for temperature-influenced emigration behavior. Climatic and island factors affect the emigration response behaviors.
