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Solanum berthaultii Hawkes affects the digestive system, fat body and ovaries of the Colorado potato beetle

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Abstract

Ovarian development and fecundity of Colorado potato beetles reared on the resistant potato species,Solanum berthaultii were reduced compared to females reared on the susceptible potato,S. tuberosum. Striking changes in the appearance of the digestive tract and large quantities of undigested plant material in the midgut of females reared onS. berthaultii suggest that ovarian development might be impaired by poor nutritional quality ofS. berthaultii foliage. Alternatively, enlargement of the midgut by undigested plant material might physically limit ovarian development and subsequent fecundity. These results suggest that a major impact ofS. berthaultii on CPB performance occurs in the physiology of digestion and reproduction.

Compendio

El desarrollo ovárico y la fecundidad de los gorgojos de la papa de Colorado criados sobre la especie resistente de papa Solanum berthaultii, fue reducido en comparación con el de las hembras criadas sobre la papa susceptible Solanum tuberosum. Cambios considerables en la apariencia del tracto digestivo y gran cantidad de material vegetal no digerido en el intestino medio de las hembras criadas sobre S. berthaultii sugiere que el desarrollo ovárico pudo ser debilitado por la pobre calidad nutritiva del follaje de S. berthaultii. Alternativamente, el alargamiento del intestino medio por el material vegetal no digerido pudo limitar físicamente el desarrollo ovárico y la posterior fecundidad. Estos resultados sugieren que un impacto importante de S. berthaultii sobre el comportamiento del CPB ocurre en la fisiología de la digestión y reproducción.

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Author notes

  1. Félix H. França

    Present address: EMBRAPA-C.N.P. Hortaliças, Caixa Postal 07-0218, 70.359-970, Brasilia, DF, Brazil

Authors and Affiliations

  1. Department of Entomology, Insectary Bldg., Cornell University, 14853-2604, Ithaca, NY, USA

    Félix H. França & Ward M. Tingey

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  1. Félix H. França
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  2. Ward M. Tingey
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Correspondence to Ward M. Tingey.

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França, F.H., Tingey, W.M. Solanum berthaultii Hawkes affects the digestive system, fat body and ovaries of the Colorado potato beetle. American Potato Journal 71, 405–410 (1994). https://doi.org/10.1007/BF02849403

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  • DOI: https://doi.org/10.1007/BF02849403

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