Browsing by Author "G. Chaitanya"

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Field screening of certain chickpea genotypes against gram pod borer, Helicoverpa armigera (Hübner)
(Malhotra Publishing House, 2022) Pavan Kumar; P.S. Singh; A.K. Saroj; G. Chaitanya; Ramkumar
Sixteen chickpea genotypes including susceptible Check BG 362 were screened against gram pod borer, Helicoverpa armigera. The mean larval population of H. armigera ranged from 0.69 to 3.22 larvae per five plants in different genotypes. The lowest larval population was recorded in genotype KPG 59 (0.69 larvae/five plants) and highest in genotype L 550 (3.22 larvae/five plants). The genotype RVG 203 recorded significantly lowest per cent pod damage (5.33%) followed by KPG 59 (6.03%) and BG 212 (9.66%). The genotype L550 recorded significantly highest per cent pod damage (31.33%) followed by BG 362 (24.33%) and GG 2 (23.33%). The genotypes RVG 203 (1840 kg/ha), KPG 59 (1822 kg/ha) produced highest grain yield. The genotype L 550 (8 PSR) recorded significantly highest pest susceptibility rating (PSR) and the lowest pest susceptibility rating was recorded in genotype KPG 59 and RVG 203 i.e 2 PSR © 2022, Journal of Entomological Research.All Rights Reserved.
Insect Biomechanics: The Physical Principles Behind Insect Locomotion and Flight
(CRC Press, 2024) P. Divya; G. Chaitanya; A. Mounika
Insect biomechanics is a field of study that focuses on understanding the mechanical principles underlying the movements and behaviors of insects. It combines principles from biology, physics, and engineering to explore how insects are able to perform various tasks, such as flying, walking, jumping, and feeding. Insect locomotion involves a wide range of mechanisms that enable insects to move efficiently and adapt to their environment. The wings of insects are remarkable structures that enable them to fly and perform a variety of aerial maneuvers. While the specific details of wing structure can vary among different insect groups and species. Insect flight is a remarkable adaptation that has enabled insects to explore and exploit diverse habitats. The efficient and agile flight capabilities of insects contribute to their success in foraging, mating, escaping predators, and colonizing new environments. The study of insect biomechanics has practical applications in various fields, including robotics, aerospace engineering, and biomimetics. By understanding the principles underlying insect movements, scientists and engineers can draw inspiration to develop new technologies and improve existing ones. © 2025 Elite Publishing House.
Insect Pathology: Biocontrol Agents for Sustainable Insect Management
(CRC Press, 2024) P. Divya; G. Chaitanya; Rani Kumar Sajane; M.D. Rafi
One of the main tactics to control insect pests is the use of chemical pesticides. Unfortunately, the application of chemical pesticides can have a negative effect on human health and the environment, result in resistance of the pest species to pesticides; and kill or negatively affect non target organisms. An alternative to chemical control is biological control (or biocontrol), which is the study and use of living organisms for the suppression of population densities of pest insects. The living organisms are predators, parasitoids and entomopathogens (meaning microorganisms capable of causing diseases in insects. Insect pathology is a branch of entomology that focuses on the study of diseases and disorders affecting insects. It involves the investigation of pathogens, such as bacteria, viruses, fungi, protozoa, nematodes, and other parasites that can infect and cause diseases in insects. Insect Pathology is a broad topic that encompasses multiple disciplines that covers the biology of microbes that have a detrimental impact on the insect fitness. Over the past decades, progress has been made in elucidating the mechanisms responsible for the ability of microbes (viruses, bacteria, fungi, protists, algae, nematodes) to infect and replicate within the insect host. Using a combination of histological and molecular approaches specific pathogenic determinants have been identified that dictate the infectivity, virulence, and specificity of various disease-causing agents. Fundamental studies on these insect-associated microbes have provided both products and strategies used in the management of insect pest populations. Insect pathology plays a crucial role in understanding the interactions between insects and pathogens, as well as their impact on insect populations, ecosystems, and agricultural systems. © 2025 Elite Publishing House.