ARCHIVES
VOL. 6, ISSUE 5 (2021)
UV radiation and temperature effect on different species of aphids behavior and mortality in Uttarakhand
Authors
Sunil Kumar, Deepa Saini
Abstract
The potential threat of rising ultraviolet (UV) radiation levels at the Earth's surface due to ozone depletion has led to the demand for worldwide measurement of UV radiation. Ultraviolet radiation directly regulates insect life processes and indirectly affecting changes in insect chemistry and morphogenesis. Aphids are the pest of many vegetables, fruits, ornamental plants and crops. They feed plant nutritive sap and affects the plant growth and productivity. Increasing temperature and UV-B radiation is a critical abiotic stressors affecting insect biology. Measurement of solar ultraviolet radiation was performed in Uttarakhand. Morphological, behavioural changes, fecundity and mortality rate was observed in different aphids species after exposure of different temperature and intensity of Ultraviolet- B irradiation in this communication. UV- B radiation show seasonal, diurnal and altitudinal variations in uttarakhand. Ultraviolet-B radiation exposure in aphids show stunted growth, morphological changes, low reproduction and high mortality up to 51%. Change in catalase and superoxide dismutase enzyme level was observed. UV-B was found more harmful with increasing temperature. Results indicate that high intensity of UV-B radiation and increase in temperature show toxic effect on aphids population diversity and dispersal. Mustard aphid (Lipaphis erysimi) and cabbage aphid (Brevicoryne brassicae) was found more sensitive than pea aphid (Acyrthosiphon pisum) and rose aphid (Macrosiphum rosae). Climate change and temperature increase affect the aphids development and population growth. High intensity of UV radiation exposure at high temperatures significantly lowered the aphids population. Increasing temperature directly affect small insects like aphids, by altering their behaviour, metabolic rate and physiological processes. UV-B radiation alters biochemical cellular integrity in aphids, which also affect their life cycle.
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Pages:196-201
How to cite this article:
Sunil Kumar, Deepa Saini "UV radiation and temperature effect on different species of aphids behavior and mortality in Uttarakhand ". International Journal of Entomology Research, Vol 6, Issue 5, 2021, Pages 196-201
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