Abstract:
Competition between Corcyra cephalonica and Ephestia
cautella and radiosensitivity of the immature stages of C.
cephalonica was studied. Developmental periods of the two
species under similar ambient conditions but different
locations were determined . Competition under limited and
abundance of standard medium and broken cocoa beans was studied
when the two species exist alone, one before the other and when
introduced together . It was concluded that in competition E
cautella becomes extinct, with. cephalonica remaining as the
successful species. A detai led study of oviposition
preferences of the two species when given the choice of three
food commodities; standard medium, broken cocoa beans and
groundnut was studied. Other studies include egg-hatchability,
age and effect of population on fecundity and for the first
time the daily activity patterns of the larvae of C cephalonica
and E cautella have been studied in a unique way.
Radiosensitivity of the developmental stages: eggs, larvae and pupae of
C. Cephalonica has also been investigated .
