Reproductive Ability and the Effect of Biological Conditioning of Medium on Survivorship and Oviposition of Tribolium freemani HINTON (Coleoptera : Tenebrionidae)
1988 年 23 巻 1 号 p. 1-7
詳細
1988 年 23 巻 1 号 p. 1-7
Survivorship and Fecundity of adult Tribolim freemani HINTON were investigated at 30°C and 70-80% R.H. especially in relation to the influence of conditioned wheat flour. Adult lingevity of the beetle was extremely ling (over 500 days), and reproductive ability was relatively low (the intrinsic rate of natural increase (rm) was 0.048 per day). The rm decreased and pre-oviposition period was prolonged when the interval of medium renewal was increased. The reduction in fecundity and delayed onset of oviposition in T. freemani were confirmed using artificially conditioned media. The potentiality of T. freemani as a pest was discussed by comparing the reproductive abilities of this species with those of two related serious stored-products pests, Tribolium castaneum and Tribolium confusum.
