Browsing by Author "N. Vinay"

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Incidence of fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on finger millet and sorghum in Karnataka, India
(Malhotra Publishing House, 2022) N. Vinay; S.V.S. Raju; N. Srinivasa; Kamal Ravi Sharma
During the survey, the fall armyworm infestation was noticed on finger millet and sorghum in two villages of Tumkur district of Karnataka, India. The pest was identified based on both morphological characters of larva and the damage symptoms in the field by available literatures. The survey revealed the incidence of 19.52 - 25.20% on finger millet and 27.32 - 30.67% on sorghum at both the locations. Present report records first incidence of fall armyworm on finger millet in Karnataka. © MPH J. ent. Res.
Insect biodiversity conservation: Why it's needed?
(Apple Academic Press, 2024) Saniya Tyagi; Radheshyam Dhole; N. Srinivasa; N. Vinay
Insects, the most abundant creatures on earth, in terms of both number and diversity, are often taken for granted by the masses due to either negligence or the annoyance that a few species create. Insects are an imperative part of the majority of the food webs that exist across the globe and also play a significant role in the functioning of the ecosystem. Moreover, insects regulate environmental sustainability in many ways such as by pollinating plants, cycling up nutrients, maintaining the structure and fertility of solum, decomposing various organic matter, etc. However, this harmony is now disturbed due to the worldwide increase in anthropogenic activities in the last few decades, leading to significant biodiversity losses in insects. Global pollution, climate change, and habitat demolition are some of the major causes of insects decline. Thus, to maintain the ecological balance and for our survival also, new and efficient efforts on conservation of insects and their diversity are needed immediately. © 2025 Apple Academic Press, Inc. All rights reserved.
Species-specific markers for Nilaparvata lugens and Sogatella furcifera (Hemiptera: Delphacidae) based on mitochondrial cytochrome oxidase I
(Springer Science and Business Media Deutschland GmbH, 2023) Saniya Tyagi; Narayana Srinivasa; R.N. Singh; N. Vinay
Brown planthopper (BPH), Nilaparvata lugens (Stål) and white-backed planthopper (WBPH), Sogatella furcifera (Horváth) are the most destructive sucking insect pests of rice in all rice growing parts of the world. For their accurate identification at early stages, we have developed two species-specific markers (SNL4F and SNL4R for BPH; SNF2F and SNF2R for WBPH) based on mitochondrial cytochrome oxidase I (COI) for their easy detection using Polymerase Chain Reaction (PCR). The markers were developed based on nucleotide differences in COI gene and were subjected to various tests based on PCR-based gel images. The designed primers were cross-checked with five other species, which confirmed their specificity. The primers were also found to be efficient in identification of their respective species (BPH and WBPH) in all the individuals sampled from different regions of India. The lowest detection sensitivity of both the primers was up to 1 ng/µl DNA after testing them through a series of varied DNA concentrations. The species-specific primers developed in this study will help in easy and rapid identification of BPH and WBPH in all the stages of their development and in turn facilitate their timely management. © 2023, King Abdulaziz City for Science and Technology.