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David Karamankodu Jacob,Hancock David Lawrence,Han Ho-Yeon,Gracy Gandhi R,Sachin K.,Swathi R.S. 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
Gibbifronta pavoniae David, Hancock and Han, gen. et sp. nov., is described from India. The current status of the subtribe Acidoxanthina is scrutinized based on both morphological characters and DNA barcoding analysis, and this taxon is formally proposed as the tribe Acidoxanthini within the subfamily Trypetinae in order to accom modate the genera Gibbifronta, Acidoxantha Hendel, Craspedoxanthitea Hardy and Acidoxanthopsis Hering. We found that the members of the Acidoxanthini possess a unique characteristic within the family Tephritidae, the short and broadly truncate lateral surstylus with reduced prensisetae and 1–3 pairs of strong dorsal setae on epandrium. Even though comparable information is not available for Acidoxanthopsis, it is retained in Acid oxanthini. Gibbifronta is distinguished from other genera of the tribe by the presence of a high gena and prominent hump-like projection on the frons. Phylogenetic analysis based on DNA barcodes revealed that Gib bifronta is closely related to Acidoxantha and support its placement in Acidoxanthini. COI sequences of Gibbifronta pavoniae, Nitrariomyia lukjanovitshi Rohdendorf, Acidoxantha galibeedu David and Ramani and an undescribed Acidoxantha species have been obtained and reported. A key to the genera of Acidoxanthini is also provided. http://zoobank.org/100D010D-21D3-4F0B-B38E-1F72DC8E9BF3.
David Karamankodu Jacob,Hancock David Lawrence,Sachin K.,Gracy Gandhi R,Swathi R.S. 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1
Rhabdochaeta nigroapicalis David, Hancock and Sachin, sp. n., is described from Assam, NE India. A key to all species of Schistopterini and Eutretini recorded from India is provided and taxonomic notes on previously described species are included. DNA barcode sequences of Calloptera asteria (Schiner), Rhabdochaeta pulchella de Meijere, Rhabdochaeta nigroapicalis David, Hancock and Sachin, sp. n. and Rhochmopterum venustum (de Meijere) were obtained and reported. Phylogenetic analysis using 62 mtCOI sequences of Tephritinae revealed Schis topterini to be a monophyletic group and the new species closely related to Rhabdochaeta pulchella, justifying its placement in Rhabdochaeta de Meijere. http://zoobank.org/A97337B3-E2BD-460D-BA62-6D3D4A1A60A2
( Vijayakumar M. Malathi ),( Ravi P. More ),( Rangasamy Anandham ),( Gandhi R. Gracy ),( Muthugounder Mohan ),( Thiruvengadam Venkatesan ),( Sandipan Samaddar ),( Sushil K. Jalali ),( Tongmin Sa ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.6
Knowledge about the gut bacterial communities associated with insects is essential to understand their roles in the physiology of the host. In the present study, the gut bacterial communities of a laboratory-reared insecticide-susceptible (IS), and a field-collected insecticide-resistant (IR) population of a major rice pest, the brown planthopper Nilaparvata lugens, were evaluated. The deep-sequencing analysis of the V3 hypervariable region of the 16S rRNA gene was performed using Illumina and the sequence data were processed using QIIME. The toxicological bioassays showed that compared with the IS population, IR population exhibited 7.9-, 6.7-, 14.8-, and 18.7-fold resistance to acephate, imidacloprid, thiamethoxam, and buprofezin, respectively. The analysis of the alpha diversity indicated a higher bacterial diversity and richness associated with the IR population. The dominant phylum in the IS population was Proteobacteria (99.86%), whereas the IR population consisted of Firmicutes (46.06%), followed by Bacteroidetes (30.8%) and Proteobacteria (15.49%). Morganella, Weissella, and Enterococcus were among the genera shared between the two populations and might form the core bacteria associated with N. lugens. The taxonomic-tophenotypic mapping revealed the presence of ammonia oxidizers, nitrogen fixers, sulfur oxidizers and reducers, xylan degraders, and aromatic hydrocarbon degraders in the metagenome of N. lugens. Interestingly, the IR population was found to be enriched with bacteria involved in detoxification functions. The results obtained in this study provide a basis for future studies elucidating the roles of the gut bacteria in the insecticide resistance-associated symbiotic relationship and on the design of novel strategies for the management of N. lugens.