Influence of laboratory hosts on the biological attributes ofChelonus blackburni [Hym.: Braconidae] |
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Authors: | Pradyumn Kumar Chandish R Ballal |
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Institution: | (1) Biological Control Centre, Bellary Road, Post Bag 2491, H.A. Farm Post, 560 024 Bangaore, India |
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Abstract: | Among 6 laboratory hosts tested, the egg-larval parasitoidChelonus blackburni Cameron completed its development in only 3;Corcyra cephalonica Stainton,Phthorimaea operculella (Zeller) andAchroia grisella (Fabricius). The parasitoid failed to develop inSpodoptera litura (Fabricius),Galleria mellonella L. andSitotroga cerealella (Olivier). The development period of the parasitoids obtained from permissive hosts correspond to the development period
of their hosts. Development period ofP. operculella, A grisella andC. cephalonica were 24.7±2.0, 39.5±2.1 and 50.5±4.1 days respectively while the development period of the parasitoid reared from these hosts
were 25.8±1.6, 36.4±3.5 and 42.5±3.5 days respectively. The fecundity of the parasitoids reared onA. grisella, P. operculella andC. cephalonica were 365.2±52.8, 287.9±101.9 and 248.7±50.8 respectively. The size of the parasitoids reared from the above 3 hosts also
followed the similar trend. However, no significant difference was observed on the percent parasitism and the longevity of
the parasitoids reared on different hosts. This study was conducted at a temperature of 24±2°C and 60±5% RH.
Contribution No 46001 of Biological Control Centre (NCIPM), Bangalore. |
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Keywords: | Chelonus blackburni hosts influence |
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