Browsing by Author "Nath, Susanta"

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    Life table and survivorship of a short horned grasshopper exposed to arsenic compound under laboratory conditions
    (Uludağ Üniversitesi, 2015-11-30) Nath, Susanta; Roy, Barnali
    Spathosternum prasiniferum prasiniferum (Walker, 1871), a common short horned grasshopper considered as pest of paddy, mungbean, urd bean, chick bean in India. They were acclimatized in bisexual pairs under laboratory conditions and exposed to various doses of sodium arsenate such as 0.0125mg.l-1 , 0.025 mg.l-1 , 0.050 mg.l-1 , 0.10 mg.l-1 , 0.20 mg.l-1 with the aim to find out survivorship, mortality and life expectancy. Sodium arsenate created the variation in their life cycle as well as life span of the insect compared to the control. A convex shaped survivorship curve of both male and female revealed a high mortality in older adult. A sizeable increment in the number of individual presented in the biplot of both male and female grasshopper advocated its ability to use the arsenic efficiently. After slight depression in 0.025 mg.l-1 , rapid recoveries signify the insect ability to overcome the initial stress situation and successfully maintained the life cycle with the advancement of doses.