Results 221 to 230 of about 7,037 (232)
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The Canadian Entomologist, 1982
AbstractStudies were carried out in the field and in the laboratory to determine if prolonged diapause of the Douglas-fir cone moth, Barbara coifaxiana (Kearfott), was correlated with the sizes of the cone crops maturing in the year of larval feeding (N) and in the year following larval feeding (N + 1), and to determine if weather during the period of ...
A. F. Hedlin, G. E. Miller, D. S. Ruth
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AbstractStudies were carried out in the field and in the laboratory to determine if prolonged diapause of the Douglas-fir cone moth, Barbara coifaxiana (Kearfott), was correlated with the sizes of the cone crops maturing in the year of larval feeding (N) and in the year following larval feeding (N + 1), and to determine if weather during the period of ...
A. F. Hedlin, G. E. Miller, D. S. Ruth
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The Canadian Entomologist, 1967
AbstractPrepupae of Neodiprion sertifer (Geoff.) held in darkness at 21 °C undergo a short normal diapause if exposed as feeding larvae to long photoperiods, but have no diapause if reared in the larval stage under short photoperiods. If cocoons from short-day rearings are exposed to 10 °C instead of 21 °C, a small proportion of the prepupal larvae ...
C. R. Sullivan, D. R. Wallace
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AbstractPrepupae of Neodiprion sertifer (Geoff.) held in darkness at 21 °C undergo a short normal diapause if exposed as feeding larvae to long photoperiods, but have no diapause if reared in the larval stage under short photoperiods. If cocoons from short-day rearings are exposed to 10 °C instead of 21 °C, a small proportion of the prepupal larvae ...
C. R. Sullivan, D. R. Wallace
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Journal of Insect Physiology, 2008
The seasonal timing mechanism of egg hatching was examined in two cicadas, Cryptotympana facialis and Graptopsaltria nigrofuscata, with different but overlapping geographical distributions. These species lay eggs in summer, and nymphs hatch in the summer of the following year after egg durations of 10-12 months.
Minoru, Moriyama, Hideharu, Numata
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The seasonal timing mechanism of egg hatching was examined in two cicadas, Cryptotympana facialis and Graptopsaltria nigrofuscata, with different but overlapping geographical distributions. These species lay eggs in summer, and nymphs hatch in the summer of the following year after egg durations of 10-12 months.
Minoru, Moriyama, Hideharu, Numata
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Journal of Insect Physiology, 1979
The activity of ribosomal RNA (rRNA) genes as judged by nucleolar size and rRNA synthesis has been shown to depend upon the phase of diapause in the eggs of Bombyx mori. In the present study, we found that nucleolar size in diapausing eggs was enlarged at a very early stage during cold treatment, a procedure necessary for the termination of diapause ...
Shunichi Kurata +2 more
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The activity of ribosomal RNA (rRNA) genes as judged by nucleolar size and rRNA synthesis has been shown to depend upon the phase of diapause in the eggs of Bombyx mori. In the present study, we found that nucleolar size in diapausing eggs was enlarged at a very early stage during cold treatment, a procedure necessary for the termination of diapause ...
Shunichi Kurata +2 more
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Journal of Insect Physiology, 2006
Curculio sikkimensis (Coleoptera: Curculionidae) requires one or more years to complete its life cycle, owing to prolonged larval diapause. To compare the effects of temperature cycles and total periods of chilling on the termination of prolonged diapause, larvae were subjected to different chilling (5 degrees C) and warming (20 degrees C) cycles ...
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Curculio sikkimensis (Coleoptera: Curculionidae) requires one or more years to complete its life cycle, owing to prolonged larval diapause. To compare the effects of temperature cycles and total periods of chilling on the termination of prolonged diapause, larvae were subjected to different chilling (5 degrees C) and warming (20 degrees C) cycles ...
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Journal of Insect Physiology, 2005
Adults of the chestnut weevil Curculio sikkimensis emerged over a 3-year period under laboratory and quasi-field conditions due to a prolonged diapause that occurred at the mature larval stage. Variable proportions of the larvae remained in diapause after a single cold (5 degrees C) treatment of 120 days.
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Adults of the chestnut weevil Curculio sikkimensis emerged over a 3-year period under laboratory and quasi-field conditions due to a prolonged diapause that occurred at the mature larval stage. Variable proportions of the larvae remained in diapause after a single cold (5 degrees C) treatment of 120 days.
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Records of prolonged diapause in Lepidoptera
The Journal of Research on the Lepidoptera, 1987openaire +1 more source
Prolonged Diapause in Enoclerus zonatus (Cleridae)
The Coleopterists' Bulletin, 1975openaire +1 more source
Evidence of Prolonged Diapause in Prepupae of the Variable Oakleaf Caterpillar, Heterocampa manteo1
Environmental Entomology, 1978G. A. Surgeoner, W. E. Wallner
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Prolonged Pupal Diapause of Papilio alexanor:1 Arid Zone Adaptation Directed by Larval Host Plant
Annals of the Entomological Society of America, 1977Ichiro Nakamura, Shigeru A. Ae
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