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ID 392
Eprint ID
392
FullText URL
Title Alternative
カクムネコナヒラタムシCathartus quadricollis の増殖に及ぼす密度効果
Author
Yoshida, Toshiharu
Abstract
Some biologies of the square-necked grain beetle, Cathartus quadricollis (Guer.) were investigated. The minimum preoviposition period of the species was 3 days. The effect of crowding on the rate of reproduction was examined. The average number of progeny produced decreased rapidly with the increase of parent density. The species is highly sensitive to overcrowding. At nearly all the densities high female sex ratio was obtained. The developmental period did not differ between sexes. At the higher densities the beetle seems to be a little delayed in development. Considering the origin and evolution of the species, it is suggested that the species may be of fruit- and/or seed - infesting species origin and seems to still rest on the early stage of becoming a serious pest of stored - products ; it may be r-strategist.
Published Date
1976
Publication Title
岡山大学農学部学術報告
Publication Title Alternative
Scientific Reports of the Faculty of Agriculture Okayama University
Volume
volume47
Issue
issue1
Publisher
岡山大学農学部
Publisher Alternative
Faculty of Agriculture, Okayama University
Start Page
1
End Page
5
ISSN
0474-0254
NCID
AN00033029
Content Type
Departmental Bulletin Paper
language
英語
File Version
publisher
Refereed
False
Eprints Journal Name
srfa