MoreauBauce2001

Référence

Moreau, G. and Bauce, E. (2001) Developmental polymorphism: a major factor for understanding sublethal effects of Bacillus thuringiensis. Entomologia Experimentalis et Applicata, 98(2):133-140.

Résumé

Developmental polymorphism in Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae) was induced by Bacillus thuringiensis (Berliner) in the laboratory. The B.t. formulation concentration induced a quadratic response on the incidence of developmental polymorphism. A double application of Bacillus thuringiensis at fourth and fifth instar respectively resulted in a higher occurrence of developmental polymorphism than a single application at fifth instar. Smaller larval weight prior to B.t. exposure resulted in higher incidence of developmental polymorphism. However, larvae exhibiting developmental polymorphism exhibited larger pupae and an extended larval period. Thus, developmental poly morphism and Bacillus thuringiensis ingestion together prolonged the development time but induced opposite effects an pupal weight. These findings suggest that the calculation of sublethal effects on pupal weight and development lime that include developmental polymorphism as an uncontrolled source of variation could lead to an inadequate understanding of insect response in any stress-induced experiments.

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@ARTICLE { MoreauBauce2001,
    AUTHOR = { Moreau, G. and Bauce, E. },
    TITLE = { Developmental polymorphism: a major factor for understanding sublethal effects of Bacillus thuringiensis },
    JOURNAL = { Entomologia Experimentalis et Applicata },
    YEAR = { 2001 },
    VOLUME = { 98 },
    PAGES = { 133-140 },
    NUMBER = { 2 },
    NOTE = { 417GT Times Cited:4 Cited References Count:28 },
    ABSTRACT = { Developmental polymorphism in Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae) was induced by Bacillus thuringiensis (Berliner) in the laboratory. The B.t. formulation concentration induced a quadratic response on the incidence of developmental polymorphism. A double application of Bacillus thuringiensis at fourth and fifth instar respectively resulted in a higher occurrence of developmental polymorphism than a single application at fifth instar. Smaller larval weight prior to B.t. exposure resulted in higher incidence of developmental polymorphism. However, larvae exhibiting developmental polymorphism exhibited larger pupae and an extended larval period. Thus, developmental poly morphism and Bacillus thuringiensis ingestion together prolonged the development time but induced opposite effects an pupal weight. These findings suggest that the calculation of sublethal effects on pupal weight and development lime that include developmental polymorphism as an uncontrolled source of variation could lead to an inadequate understanding of insect response in any stress-induced experiments. },
    KEYWORDS = { developmental polymorphism bacillus thuringiensis choristoneura fumiferana sublethal effects spruce budworm lepidoptera choristoneura-fumiferana tortricidae mortality recovery instars larvae toxin },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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