Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 550140
Title Infection with Spodoptera litura NPV Reduces Food Consumption and Weight Gain of Spodoptera litura Larvae
Author(s) Ali, Ghulam; Werf, Wopke van der; Vlak, Just M.
Source Pakistan Journal of Zoology 51 (2019)2. - ISSN 0030-9923 - p. 495 - 501.
DOI https://doi.org/10.17582/journal.pjz/2019.51.2.495.501
Department(s) Laboratory of Virology
PE&RC
Crop and Weed Ecology
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Food consumption - Spodoptera litura - Spodoptera litura nucleopolyhedroviruses - Weight gain
Abstract

Insect-pathogenic baculoviruses have established potential as biological insect pest control agents. However, slow speed of kill relative to chemicals and continued feeding following application limit their effectiveness in preventing crop losses. Here we studied the food consumption and weight gain of the cotton leafworm Spodoptera litura following application of two viral doses of Spodoptera litura nucleopolyhedrovirus (Pakistan isolate SpltNPV-Pak-BNG). Infected larvae with final polyhedrosis (disease resulting in dissolution of larval tissues and accumulation of viral occlusion bodies) exhibited reduced food intake and weight gain relative to uninfected larvae. The unexposed larvae and the larvae that were exposed but survived exhibited the same food consumption and weight gain. This study did thus not reveal any sub-lethal effects of exposure to the virus on food consumption and weight gain. There was no viral dose dependency observed in food intake or weight gain by infected larvae, suggesting there is no increased crop damage upon virus treatment but rather a decrease to be expected.

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