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International Journal of Fauna and Biological Studies

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e-ISSN : 2347-2677, p-ISSN : 2394-0522

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International Journal of Fauna and Biological Studies

2015, Vol. 2 Issue 3, Part A
Life table and population parameters of Diacrisia casignetum Kollar (Lepidoptera: Arctiidae) on jute, Chorchorus capsularis (cv. Sonali; JRC-321), leaves
Author(s): Nayan Roy
Abstract: The life table study of the arctiid moth, Diacrisia casignetum was conducted on young, mature and senescent jute, Chorchorus capsularis (cv. Sonali; JRC-321), leaves in the laboratory condition. The demographic parameters of D. casignetum on mature leaves were significantly differed (P< 0.05) from the other leaves with higher intrinsic (rm) and finite (λ) rate of increase (0.123 and 1.131, respectively) through shorter mean generation time (Tc) of 39 days and the doubling time (DT) of 5.653 days. The generation survival (GS) of D. casignetum on the three jute leaves can be arranged in order of mature>young>senescent leaves, whereas total generation mortality (K) are in the reverse order. These differences in the demographic parameters are due to the variation in their phytochemical regime of respective jute leaves which may help to understand how food quality influences the life table parameters of D. casignetum for appropriate control measures at their most vulnerable stage.
Pages: 23-29  |  642 Views  11 Downloads
How to cite this article:
Nayan Roy. Life table and population parameters of Diacrisia casignetum Kollar (Lepidoptera: Arctiidae) on jute, Chorchorus capsularis (cv. Sonali; JRC-321), leaves. 2015; 2(3): 23-29.
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