The feeding and fecundity of Sitophilus granarius (L.), Sitophilus orvzae (L.) and Rhyzopertha dominica (F.) in wheat grain
DOI: 10.1016/0022-474X(69)90056-3
Title: The feeding and fecundity of Sitophilus granarius (L.), Sitophilus orvzae (L.) and Rhyzopertha dominica (F.) in wheat grain
Journal Title: Journal of Stored Products Research
Volume: 5
Issue: 2
Publication Date: August 1969
Start Page: 143
End Page: 155
Published online: online 3 October 2003
ISSN: 0022-474X
Author: Zofia Golebiowska
Affiliations:
  • Plant Protection Institute, Poznań, Poland
  • Abstract: nt of food eaten by adults of three species kept on wheat grain was assessed over 30 consecutive days in the laboratory at 28°C and 75 per cent r.h. Studies also covered the number of offspring from beetles which fed for 1, 2, 3, 4 … 30 days, as well as the length of larval development and the amount of larval feeding. Adults of Sitophilus oryzae fed at the same rate throughout the experiment and laid most of their eggs during the first few days after reaching maturity. S. granarius, however, began to lay the eggs only after several days of intensive feeding, when the feeding rate had decreased. Rhyzopertha dominica also at first ate intensively and later at a decreased rate. They laid most eggs during the first few days, and again in the fourth week. Intensive oviposition was preceded by intensive feeding. The amount of food eaten by larvae and adults, together with the quantity of grain dust produced in relation to the adult's body weight, indicated that of the three species, R. dominica was the most voracious and destructive.
    Accepted: 9 December 1968
    Received: 16 May 1968

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