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- 저자 : Tyagi Kaomud (검색결과 2 건)
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Molecular identification of selected bees from the Indian Himalaya: A preliminary effort
Pakrashi Avas,Kundu Shantanu,Saini Jagdish,Tyagi Kaomud,Chandra Kailash,Kumar Vikas 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4
DNA barcoding has largely been tested for a wide range of taxa and evidenced as a reliable and rapid molecular tool for species-level identification. The present study lends to generate 156 DNA barcodes, of which 141 belonged to 30 morphologically identified bees from the Indian Himalayan Regions (IHRs). The generated barcode data along with 84 sequences of global database distinctly discriminated all the studied species with sufficient genetic distances and cohesive monophyletic clustering in Bayesian analysis (BA) phylogeny. The species delimitation methods, Automatic Barcode Gap Discovery (ABGD), Bayesian Poisson-Tree-Processes (bPTP), and General Mixed Yule-coalescent (GMYC) yielded 68, 70, and 71 molecular operational taxonomic units (MOTUs) respectively. The present DNA barcode-based examination detected the possible cryptic diversity in two Apis species (A. cerana and A. dorsata), Bombus hypnorum, Lepidotrigona arcifera, and Ceratina sutepensis. The present study also evidenced the species complexes within Bombus albopleuralis and Bombus trifasciatus in the IHRs. The species delimitation methods also detected an additional seven putative species from the IHRs, which were identified up to the genus level. In conclusion, this preliminary effort helps to develop a reliable barcode database of bees from the Indian IHRs to facilitate the future systematics study. These molecular data can be utilized to evaluate the population structures and assist to formulate the effective plans for bee conservation.
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K.N. Chandrashekara,R. Raj Kumar,Vikas Kumar,Dhriti Banerjee,Shantanu Kundu,Biswatosh Ghosh,Kaomud Tyagi 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.3
The tea mosquito bug, Helopeltis theivora Waterhouse (Miridae: Heteroptera) is a polyphagous pest that affects a number of economically important crops in India. Partial sequences of mitochondrial cytochrome c oxidase 1 (mtCOI) were used to study host associated genetic variation on H. theivora collected from tea (Camellia sinensis L.), cashew (Anacardiumoccidentale L.), acalypha (Acalypha indica L.) and cocoa (Theobroma cacao L.). The results suggest that host plants have a significant effect on the genetic variation of bugs collected from two wide geographical locations (South India and North-East India). Haplotyping data analysis of mtCOI reveals six host plant specific haplotypes of H. theivorawith minimumgenetic divergence (0.8%) between two haplotypeswithin tea as compared to other plants (2.6–11.1%). Further phylogenetic (NJ, ML and BA) analysis evidence three host specific distinct clades. The most surprising result that emerged from our studies is the harmony between clustering of H. theivora and host plant phylogeny. The results indicate that host plants do have selection pressure and substantial effect on genetic variation in H. theivora and such adaptive evolution may have repercussions for IPM (Integrated Pest Management) strategies of H. theivora in India.
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