第一白卵 (ω-1) のカイコ幼虫の明暗順応による走光性の符号転換

概要

論文の詳細を見る
Phototactic response of an ommochrome pigment-less mutant (ω-1) of the silkworm, Bombyx mori, was investigated. The light intensity response curves varied with light- and dark-adaptive stages of the newly-hatched larvae. After light-adaptation the larvae showed a positive phototaxis at low intensities of the yellow test-light, but a negative phototaxis at high intensities. After dark-adaptation they showed negative phototactic responses to all intensities of test light. The half-times of the sign reversion in the response by light- or dark-adaptation were 20-30 min. Green light (500-560 nm) was effective in both positive and negative responses. After light-adaptation, mature ω-1 larvae moved toward a light source with a klinotactic behavior, but dark-adapted larvae moved away from it. The results of crosses between w-1 and other positive-phototactic races showed that the genetic factor determining the characteristics of phototactic response of ω-1 is completely recessive.
日本応用動物昆虫学会の論文
1990-02-25