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Application of different nitrogen levels to the host plant and cannibalistic behavior of beet armyworm spodoptera exigua lepidoptera noctuidae



Application of different nitrogen levels to the host plant and cannibalistic behavior of beet armyworm spodoptera exigua lepidoptera noctuidae



Environmental Entomology 12(6): 1687-1689



The effects of dietary N levels on cannabilistic behavior of a generalized herbivore, S. exigua (Huebner), were evaluated by rearing larvae on sugarbeet foliage from plants fertilized with less than normal, normal, and more than normal levels of N, and allowing larvae to cannabalize beet armyworm pupae. There was a significant inverse correlation between foliar N content and percent cannabalism. Fecundity was significantly increased by cannabalistic behavior among female larvae. Larval compensation for poor-quality diet by increased cannabalism is suggested as a potentially important factor in herbivore population dynamics.

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Accession: 004773043

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