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Journal of Entomological Research
Year : 2011, Volume : 35, Issue : 2
First page : ( 143) Last page : ( 146)
Print ISSN : 0378-9519. Online ISSN : 0974-4576.

Biotic potential of Micromus timidus Hagen on six aphid species

Navi S.S.*, Lingappa S., Patil R.K.

Department of Entomology, University of Agricultural Sciences, Dharwad-580 005, Karnataka, India

*Corresponding author's adress: Dr. S.S. Navi, SMS (Agril. Entomology), Krishi Vigyan Kendra, Chamarajanagar; E-mail: navi_ento@yahoo.co.in

Accepted:  10  May,  2011.


Biotic potential of M. timidus on six aphid species viz., Ceratovacuna lanigera (Zehntner), Aphis craccivora (Koch), Aphis gossypii (Glover), Melanaphis sacchari (Zehntner), Uroleucon carthami Theo and Myzus nicotianae Blackman was studied. Developmental period from egg to adult was significantly shortest (18.05 days) on A.craccivora while longest on U. carthami (20.61 days). Eggs obtained from predator fed on U. carthami and M. nicotianae were incubated for longer period (4.38 and 4.37 days, respectively). Larvae grew at faster rate and completed larval and pupal stages on M. sacchari (6.52 days larval period and 7.56 days pupal period) and A.craccivora (6.68 days larval period and 7.26 days pupal period). Aphis gossypii and M. sacchari were highly preferred and showed more number of eggs production 794.53 and 793.75, respectively.


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