Population genetic structure of the melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) based on mitochondrial cytochrome oxidase (COI) gene sequences.
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.
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur 176062, Himachal Pradesh, India. csprabhakar.ento@gmail.com
Chandra S
CS
Prabhakar
Pawan K
PK
Mehta
Pankaj
P
Sood
Sunil K
SK
Singh
Prachi
P
Sharma
Prem N
PN
Sharma
D000818:Animals; D044822:Biodiversity; D019662:Cucurbitaceae / Q000469:parasitology; D004272:DNA, Mitochondrial / Q000737:chemistry / Q000235:genetics*; D003576:Electron Transport Complex IV / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes; D006254:Hawaii; D007194:India; D019476:Insect Proteins / Q000235:genetics*; D058865:Introduced Species; D008969:Molecular Sequence Data; D009154:Mutation; D009390:Nepal; D010802:Phylogeny; D011157:Population Dynamics; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D033621:Tephritidae / Q000235:genetics* / Q000254:growth & development
D004272:DNA, Mitochondrial; D019476:Insect Proteins; D003576:Electron Transport Complex IV