このエントリーをはてなブックマークに追加
ID 47722
FullText URL
Author
Sakamoto, Tomoaki
Abstract
The cricket, Modicogryllus siamensis, shows clear photoperiodic responses at 25 degrees C in nymphal development. Under long-day conditions (LD16:8), nymphs became adults about 50 days after hatching, while under short-day conditions (LD8:16) the duration of nymphal stage extended to more than 130 days. Under constant dark conditions, two developmental patterns were observed: about 60% of crickets became adults slightly slower than under the long-day conditions, and the rest at later than 100 days after hatching, like those under the short-day conditions. When the compound eye was unilaterally removed on the 2nd day of hatching, an increase of molting and an extension of the nymphal period were observed under the long-day conditions, while under the short-day conditions, some crickets developed faster and others slower than intact crickets. These results suggest that this cricket receives photoperiodic information through the compound eye, that a pair of the compound eyes is required for a complete photoperiodic response, and that interaction between bilateral circadian clocks may be also involved in the response.
Keywords
cricket
nymphal development
photoperiodism
circadian clock
compound eye
Published Date
2007-06
Publication Title
Zoological Science
Volume
volume24
Issue
issue6
Publisher
Zoological Society of Japan
Publisher Alternative
日本動物学会
Start Page
604
End Page
610
ISSN
0289-0003
NCID
AA10545874
Content Type
Journal Article
language
英語
Copyright Holders
© 2007 Zoological Society of Japan
File Version
publisher
Refereed
True
DOI
PubMed ID
Web of Sience KeyUT