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n African Entomology - Effect of six diets on development and fecundity of (Pallas) (Coleoptera: Coccinellidae)

Volume 20, Issue 1
  • ISSN : 1021-3589
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Abstract

Effect of six different diets on the development and oviposition of was studied. The developmental time of larvae fed on different diets ranged from 9.3 to 16.2 days, and the artificial diet-grown larvae showed a significantly longer developmental time than those fed on eggs or . They also showed a lower adult emergence rate, which were only 3.6%to 16.0 %, while it was 90.0% on and 72.1% on eggs. The was the best diet in terms of reproduction, because of the shorter pre-oviposition period and higher fecundity of its females compared to the females on artificial diets and eggs. In order to evaluate the potential of eggs for rearing as a supplementary prey, its effect on the fecundity of was tested. The results revealed that for adults fed on , their larval food source had no significant effect on duration of pre-oviposition period (8.6 and 7.5 days) and fecundity (737.2 and 739.8). However, when the ladybeetles were fed with as larval food and eggs as adult food or eggs alone, the fecundity of dramatically decreased. These results suggest that eggs only can be used as supplementary diet for larvae when natural prey is inadequate or absent, and the artificial diets in this paper show low values.

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/content/ento/20/1/EJC119302
2012-03-01
2016-12-09

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