Malays. Appl. Biol. (1998) 27(1 & 2): 101-104
IMPACT OF VIRGINITY, ANTENNECTOMY AND DENSITY OF HOST SEEDS (VIGNA SPP.) ON THE FECUNDITY OF CALLOSOBRUCHUS MACULATUS FABRICIUS (COLEOPTERA: BRUCHIDAE)
SEENIVASAGAN, R. and IGNACIMUTHU, S.*
Entomology Research Institute Loyola College, Chennai - 600 034, Tamil Nadu, India
ABSTRACT
Virgin and mated antennectomized females of Callosobruchus maculatus Fabricius laid less eggs compared to that ol control (normal females). The onset of egg laying was also delayed in the case of virgin females. Number of eggs laid b> this bruchid species increased with an increase in the number of host seeds provided during oviposition in all the foui Vigna species (V. radiata, V. iniingo, V. sublobata and V. bourneae) tested.
ABSTRAK
Callosobruchus maculatus Fabricius betina dara dan matang yang terantenoktomi menghasilkan telur yang sedikil berbanding kawalan. Permulaan peneluran juga tertangguh dalam betina dara. Bilangan telur meningkat dengan peningkatan biji perumah, terutama semasa oviposition dalam keempat-empat spesies Vigna (V. radiata, V. iniingo, V. sublobata and V. bourneae) yang diuji.
Key words: Antennectomy, Callosobruchus maculatus, egg output, seed density, Vigna spp., virginity
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