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Prabhakar C.S.,CSK Himachal Pradesh Krishi Vishvavidyalaya | Prabhakar C.S.,Research Complex for Eastern Region Research Center | Mehta P.K.,CSK Himachal Pradesh Krishi Vishvavidyalaya | Sood P.,CSK Himachal Pradesh Krishi Vishvavidyalaya | And 5 more authors.
Genetica | Year: 2012

Population genetic structure of melon fly analysed with mitochondrial cytochrome oxidase I gene suggested that melon fly populations across the globe is homogeneous with non-significant variation of 0. 000-0. 003 base substitutions per site. Test isolates representing various geographic situations across the world were placed in 26 mitochondrial haplotypes based on variations associated with a maximum of three mutational steps and the predominant haplotype i. e. H1 was present in all melon fly populations except Hawaiian population. Evolution of mtCOI gene suggested that the fly could have originated some 0. 4 million years ago. The present study also indicated that the B. cucurbitae population expansion is an event of post Pleistocene warm climatic conditions with small number of founder population. The invasion of B. cucurbitae in Hawaii was associated with the large population size and the global presence of the fly is associated with human mediated dispersal. The very low genetic variation suggested that the fly management might be possible by large scale sterile insect techniques programme. © 2012 Springer Science+Business Media B.V.

Choudhary J.S.,Research Complex for Eastern Region Research Center | Prabhakar C.S.,Research Complex for Eastern Region Research Center | Maurya S.,Research Complex for Eastern Region Research Center | Kumar R.,Research Complex for Eastern Region Research Center | And 2 more authors.
Phytoparasitica | Year: 2012

An entomopathogenic fungus belonging to the genus Hirsutella was found infecting the mango hopper, Idioscopus clypealis (Lethierry) (Hemiptera: Cicadellidae), for the first time in India in September 2011. The report of a natural control agent of mango hopper during the off season has special significance because its outbreak depends upon its residual hibernating population. © 2012 Springer Science + Business Media B.V.

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