Search Results - "Ravi Parkash"

Cold and desiccation stress induced changes in the accumulation and utilization of proline and trehalose in seasonal populations of Drosophila immigrans by Tamang, Aditya Moktan, Kalra, Bhawna, Parkash, Ravi

“…Changes in the levels of energy metabolites can limit survival ability of Drosophila species under stressful conditions but this aspect has received less…”
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Heat- and humidity-induced plastic changes in body lipids and starvation resistance in the tropical fly Zaprionus indianus during wet and dry seasons by Girish, T N, Pradeep, B E, Parkash, Ravi

“…Insects in tropical wet or dry seasons are likely to cope with starvation stress through plastic changes (developmental as well as adult acclimation) in energy…”
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Sex-specific divergence for body size and desiccation-related traits in Drosophila hydei from the western Himalayas by Kalra, Bhawna, Parkash, Ravi

“…Sex-specific-differences are a widespread source of genetic variation in various Drosophila species. In the present study, we have examined desiccation…”
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Healthcare workers' stress associated with the COVID-19 outbreak by Parkash, Ravi, Saini, Neharika

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Developmental and adult acclimation impact cold and drought survival of invasive tropical Drosophila kikkawai by Parkash, Ravi, Lambhod, Chanderkala, Pathak, Ankita

“…Narrow distribution patterns of tropical Drosophila species are limited by lower resistance to cold or drought. In the invasive tropical Drosophila kikkawai,…”
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Hyperuricaemia, Hypoparathyroidism and Acute Hypercalcaemia: Unusual Complications in Extrapulmonary Tuberculosis by Parkash, Ravi, Dabla, Surekha, Saini, Neharika, Bala, Kiran

“…Hypercalcaemia may occur in patients with pulmonary tuberculosis because of abnormal extrarenal production of 1,25-dihydroxy Vitamin D3 by activated…”
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Changes in body melanisation and desiccation resistance in highland vs. lowland populations of D. melanogaster by Parkash, Ravi, Rajpurohit, Subhash, Ramniwas, Seema

“…Wild caught samples of Drosophila melanogaster from five highland localities showed parallel changes in melanisation and desiccation resistance in darker…”
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Cold acclimation conditions constrain plastic responses for resistance to cold and starvation in Drosophila immigrans by Pathak, Ankita, Munjal, Ashok, Parkash, Ravi

“…In montane species, cold-induced plastic changes in energy metabolites are likely developed to cope with cold and starvation stress. Adult reared at 15°C were…”
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Effects of desiccation and starvation on body fats and proteins in wild-caught Drosophila busckii by Tamang, Aditya Moktan, Mishra, Jayapriya, Singh, Renuka, Muchahary, Argeng, Parkash, Ravi, Srivastava, Raj Kamal, Singh, Padmasana

“…The wild populations of Drosophila show highly adaptive body metabolism in response to changing environments. The traits associated with starvation and…”
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Rapid effects of humidity acclimation on stress resistance in Drosophila melanogaster by Aggarwal, Dau Dayal, Ranga, Poonam, Kalra, Bhawna, Parkash, Ravi, Rashkovetsky, Eugenia, Bantis, Leonidas E.

“…We tested the hypothesis whether developmental acclimation at ecologically relevant humidity regimes (40% and 75% RH) affects desiccation resistance of…”
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Tropical Drosophila ananassae of wet-dry seasons show cross resistance to heat, drought and starvation by Lambhod, Chanderkala, Pathak, Ankita, Munjal, Ashok K, Parkash, Ravi

“…Plastic responses to multiple environmental stressors in wet or dry seasonal populations of tropical species have received less attention. We tested plastic…”
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Divergence of water balance mechanisms in two sibling species (Drosophila simulans and D. melanogaster): effects of growth temperatures by Parkash, Ravi, Aggarwal, Dau Dayal, Singh, Divya, Lambhod, Chanderkala, Ranga, Poonam

“…Drosophila simulans is more abundant under colder and drier montane habitats in the western Himalayas as compared to its sibling D. melanogaster but the…”
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Climate warming mediates range shift of two differentially adapted stenothermal Drosophila species in the Western Himalayas by Parkash, Ravi, Ramniwas, Seema, Kajla, Babita

“…The average temperature of the earth has increased from 0.3 to 0.6°C, and warming is facilitating faunal reshuffling. Variable thermal environments warrant…”
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Mental health aspects of the geriatric population: Focus on COVID-19 outbreak by Hitesh Khurana, Shipra Singh, Sakshi Bhardwaj, Ravi Parkash, Akansha Bhardwaj, Shivani Deshwal, Neha Aggarwal, Isha Batra

“…The new coronavirus has had a multifaceted impact on humans and has affected nearly everyone, some more than the other. The elderly is one such population,…”
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Body melanization and its adaptive role in thermoregulation and tolerance against desiccating conditions in drosophilids by Rajpurohit, Subhash (Maharshi Dayanand University, Rohtak, India), E-mail: srmailbox@rediffmail.com, Parkash, Ravi (Maharshi Dayanand University, Rohtak, India), Ramniwas, Seema (Maharshi Dayanand University, Rohtak, India)

“…Melanism seems to have evolved independently through diverse mechanisms in various taxa and different ecological factors could be responsible for selective…”
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Adaptive associations between total body color dimorphism and climatic stress-related traits in a stenothermal circumtropical Drosophila species by Parkash, Ravi, Chahal, Jyoti, Sharma, Vineeta, Dev, Kapil

“…Low desiccation resistance of Drosophila ananassae reflects its rarity outside the humid tropics. However, the ability of this sensitive species to evolve…”
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A trade-off between desiccation resistance and developmental humidity for pupation height in the North Indian seasonal population of Drosophilid-Zaprionus indianus by Kalra, Bhawna, Parkash, Ravi

“…Drosophila larvae and pupae are vulnerable to seasonal abiotic stressors such as humidity and temperature. In wild low-humidity habitats, desiccation stress…”
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Correlated Changes in Body Melanisation and Mating Traits of Drosophila melanogaster: A Seasonal Analysis by Dev, Kapil, Chahal, Jyoti, Parkash, Ravi, Kataria, Sudhir Kumar

“…Altitudinal localities of the northern India are associated with high seasonal changes. Drosophila melanogaster flies are darker during the winter season as…”
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Starvation Resistance in a Stenothermal Species from the Indian Subcontinent: Mechanistic Basis of Clinal Variation by Chahal, Jyoti, Parkash, Ravi, Dev, Kapil

“…Parallel clines for starvation resistance and lipid content are well documented among drosophilids on the Indian subcontinent. However, the mechanistic basis…”
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Plastic changes in cold and drought tolerance of Drosophila nepalensis correlate with sex-specific differences in body melanization, cuticular lipid mass, proline accumulation, and seasonal abundance by Parkash, Ravi, Lambhod, Chanderkala

“…Autumn-collected flies of Himalayan Drosophila nepalensis differ in body color phenotypes (males more melanized relative to females) and in their behavior…”
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