ショウジョウバエの変異と環境 VIII. : 暗黒生活581代の中でみられたキイロショウジョウバエ Drosophila melanogaster の行動の変化 (1)

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Mori and others have been rearing flies (Drosophila melanogaster, OregonRS) successively in total darkness since November, 1954 and have examined several characters at intervals of a few or of several tens or of several hundreds of generations. As for phototaxic and photokinetic reactions, Mori and Yanagishima (1959a, b) already reported the results obtained during 107 generations as follows: the flies cultured in continuous darkness (D flies) reacted more vigorously or sensitively to sudden illumination than those cultured under normal daylight condition (L flies); the photokinetic response in males and the phototaxic response in females seemed to be chiefly responsible for the difference in behavior; the difference in behavior in the "phototaxis + photokinesis" experiment was so delicate as to become negligible after the flies had been subjected to light for 2 to 3 min. The above difference was reconfirmed later by using flies kept for 201 generations (Mori et al. 1966). The experiments performed at 303 and 581 generations, which are described in the present report, show principally the same results, that is, the D flies reacted more actively to sudden illumination than the L flies. However, two points are different, first, the above difference in behavior between the D and L flies does not disappear even after subjecting the flies to illumination for 2 to 3 min, which seems to indicate that tie difference is more firmly settled as more generations go through, and secondly, the photokinetic response seems to be chiefly responsible for the above difference not only in males but also in females. Attention was paid to a possible cause (mutation) for these changes and to the changes of various characters brought about coincidently with the alteration of photic behaviors.
社団法人日本動物学会の論文
1982-09-25

ショウジョウバエの変異と環境 VIII. : 暗黒生活581代の中でみられたキイロショウジョウバエ Drosophila melanogaster の行動の変化 (1)

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