Food intake and utilization of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) fed on cotton cultivars with colored fibers

The study investigated the development, survivorship, and food intake of cotton leafworm Alabama argillacea (Hübner) fed on three cotton cultivars with colored fibers. Significantly shorter larval life-span and higher pupal weight as well as higher survival rates were observed in A. argillacea fed o...

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Bibliographic Details
Published in:Journal of pest science 2011-06, Vol.84 (2), p.199-205
Main Authors: Ramalho, F. S, Azeredo, T. L, Fernandes, F. S, Nascimento Júnior, J. L, Malaquias, J. B, Nascimento, A. R. B, Silva, C. A. D, Zanuncio, J. C
Format: Article
Language:English
Subjects:
Agriculture
Alabama argillacea
Biomedical and Life Sciences
Body weight gain
Cotton
Cultivars
Ecology
Entomology
feces
Fibers
Food
Food intake
Food quality
foods
Forestry
Growth rate
Larvae
Leaves
Lepidoptera
Life Sciences
Metabolic rate
Noctuidae
Original Paper
Plant Pathology
Plant Sciences
Survival
survival rate
weight gain
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Summary:The study investigated the development, survivorship, and food intake of cotton leafworm Alabama argillacea (Hübner) fed on three cotton cultivars with colored fibers. Significantly shorter larval life-span and higher pupal weight as well as higher survival rates were observed in A. argillacea fed on leaves of BRS Safira and BRS Rubí cotton cultivars compared with the BRS 200 cultivar (BRS = Brazil). Weight gain, feces, and food intake were higher in A. argillacea fed on leaves of BRS Safira compared with the BRS 200 cultivar. The cotton cultivar significantly affected all larval food intake and utilization indices for A. argillacea. The larvae of A. argillacea were more efficient (higher efficiency in converting ingested (ECI) and digested (ECD) food) when fed on leaves of the BRS Safira cultivar in comparison to the BRS 200 cultivar, since the larval phase was shortened and food intake was higher, resulting in a higher growth rate (RGR). However, A. argillacea larvae fed on the leaves of the BRS 200 cultivar, with lower ECI and ECD, exhibited a compensatory response, extending the duration of the larval phase and increasing food intake, resulting in a higher relative metabolic rate. We conclude that BRS Safira provides the best food quality for A. argillacea, BRS 200 the worst, and BRS Rubi plants of intermediate quality.
ISSN:1612-4758
1612-4766
DOI:10.1007/s10340-010-0341-2