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Factors causing seasonal decline in Chilocorus bipustulatus L. [Coccinellidae] in citrus groves in Israel
Year:
1970
Source of publication :
Entomophaga
Authors :
Greenberg-Levy, Sima H.
;
.
Volume :
15
Co-Authors:
Kehat, M., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Greenberg, S., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Gordon, D., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Facilitators :
From page:
337
To page:
345
(
Total pages:
9
)
Abstract:
Dissection of Chilocorus females collected in citrus groves at different times of the year reveals a considerable decline in ovogenesis during mid-summer and winter. This decline is not an innate character of the summer or winter generation beetles but is caused by climatic factors, so should not be expressed as aestivation or hibernation. Decreased ovogenesis seems to be the main factor governing Chilocorus population decrease during summer. Changes in photoperiod do not hinder egg laying or induce any diapause. chilocorus bipustulatus represents in Israel a potentially multivoltine species whose reproduction during mid-summer or winter is simply slowed down due to unfavorable conditions. © 1970 Le François.
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More details
DOI :
10.1007/BF02370302
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29736
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
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Scientific Publication
Factors causing seasonal decline in Chilocorus bipustulatus L. [Coccinellidae] in citrus groves in Israel
15
Kehat, M., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Greenberg, S., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Gordon, D., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Factors causing seasonal decline in Chilocorus bipustulatus L. [Coccinellidae] in citrus groves in Israel
Dissection of Chilocorus females collected in citrus groves at different times of the year reveals a considerable decline in ovogenesis during mid-summer and winter. This decline is not an innate character of the summer or winter generation beetles but is caused by climatic factors, so should not be expressed as aestivation or hibernation. Decreased ovogenesis seems to be the main factor governing Chilocorus population decrease during summer. Changes in photoperiod do not hinder egg laying or induce any diapause. chilocorus bipustulatus represents in Israel a potentially multivoltine species whose reproduction during mid-summer or winter is simply slowed down due to unfavorable conditions. © 1970 Le François.
Scientific Publication
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