天蚕及び柞蚕の交尾に関する研究 : 第1報発蛾時刻

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The time of emerging of Antheraea Yamamai G. and Antheraea pernyi G. is different from that of Bombyx mori. The time of emerging of these wild silkworms as shown in Tables 1 and 2. The emergence of A. Yamamai commences from about 6 o'clock in the evening, with its maximum occurrence between 9-11 o'clock at night, whence it begins to decrease rapidly. Consequently the number of emergence just before dawn is very few. The emergence of A. pernyi, however, begins almost about 4 o'clock in the afternoon and is in full swing between 6-8 o'clock in the evening, whereas those emerging after midnight are extremely few. Therefore A. pernyi is earlier than A. Yamamai not only in the time of starting emergence but also in the maximum epoch, not to speak of the terminal stage. Moreover the female is later in emergence than the male at large. One of the main causes of this nocturnal cooling being supposed to be light, the authors divided the pupae into two groups, one of which were put under natural conditions regarding light, viz. bright in the daytime and dark at night, and the other under reversed conditions, viz. dark in the daytime and bright at night ; the temperature was Rept at ca 25℃ throughout. Although the emergence occurs throughout the day, it concentrates in the evening hours as regards the former group, whereas as in the latter group, in the hours starting from morning and continuing throughout the daytime. This inversion of the vigorous epoch of emergence obviously reveals the inhibitory action of light on the Imaginal differentiation, but the facts of the daylong emergence as is statisticaly shown in Table 4 indicates the significant role of temperature on the occurrence as well. Hence it is presumable that the composite effect of light and temperature chiefly determines the time of emerging of A. Yamamai and A. pernyi, though the authors desire to scrutinize this point later.
日本生態学会の論文
1955-03-31

天蚕及び柞蚕の交尾に関する研究 : 第1報発蛾時刻

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天蚕及び柞蚕の交尾に関する研究 : 第1報 発蛾時刻

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天蚕及び柞蚕の交尾に関する研究 : 第1報発蛾時刻