Document Detail

Effects of photoperiod and temperature on seasonal morph development and diapause egg oviposition in a bivoltine race (Daizo) of the silkmoth, Bombyx mori L.
MedLine Citation:
PMID:  12770377     Owner:  NLM     Status:  Publisher    
A bivoltine race (Daizo) of the silkmoth, Bombyx mori, has two types of adults which are classified on the basis of the number of dark-brown and brown scales distributed along the outer lines of the anterior wings. Development of these two types of adults is determined by photoperiod and temperature experienced during the embryonic and larval stages. The two types of adults are thought to be seasonal (summer and autumn) morphs. All adults developed under short days at low temperature (15 degrees C and 23 degrees ) were classified as summer morphs and oviposited only nondiapause eggs (ND-eggs), and those that developed under long days at high temperature (28 degrees C and 25 degrees C) were autumn morphs ovipositing only diapause eggs (D-eggs), only ND-eggs or a mixture of D- and ND-eggs. Larval exposure to long days at 25 degrees C shifted the wing pattern towards the autumn morphs and decreased the incidence of female adults ovipositing only D-eggs. Larval exposure to long days elicits an opposite effect on D-egg oviposition to that observed when long days are received only during the embryonic stage.
J Tsurumaki; J Ishiguro; A Yamanaka; K Endo
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Publication Detail:
Journal Detail:
Title:  Journal of insect physiology     Volume:  45     ISSN:  1879-1611     ISO Abbreviation:  J. Insect Physiol.     Publication Date:  1999 Feb 
Date Detail:
Created Date:  2003-May-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985080R     Medline TA:  J Insect Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  101-106     Citation Subset:  -    
Environmental Biology Laboratory, Institute of Biological Sciences, Faculty of Science, Yamaguchi University, Yamaguchi, Japan
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