EnnisMaderBurnsideEtAl2015

Référence

Ennis, D.E., Mader, B.J., Burnside, K., Bauce, E. and Despland, E. (2015) Is Feeding Behaviour on Foliage Affected by lab-Rearing on Artificial Diet? Journal of Insect Behavior, 28(2):147-156. (Scopus )

Résumé

Eastern spruce budworm, Choristoneura fumiferana, larvae were reared on white spruce (Picea glauca) foliage and/or an agar based artificial diet medium for different proportions of their development: fed foliage throughout, fed diet until the 4th instar then foliage for two instars, fed diet until the 6th instar then foliage for 24 h and fed diet only. The insects were then observed feeding on white spruce needles. First, insects reared exclusively on artificial diet exhibited a longer latency to initiate feeding than insects with some prior exposure to foliage. Second, artificial diet-reared insects and those pretreated on foliage for only a few hours had significantly longer meals but lower food consumption than those reared exclusively on foliage or pretreated on foliage for two instars, suggesting that artificial diet-reared insects ingest foliage more slowly during a meal. Third, caterpillars pretreated on foliage for several days, like their diet-reared and short exposure counterparts, had longer intermeal intervals than foliage-reared caterpillars. Finally, subsequent measurements showed that diet-reared budworm have smaller head capsules than foliage-reared insects. These findings show that prior experience influences a folivore’s behaviour on a given food, that insects reared on artificial diet do not develop the same ability to feed on plants as do foliage-reared insects and that different mechanisms of acclimation to a food operate at different time scales.

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@ARTICLE { EnnisMaderBurnsideEtAl2015,
    AUTHOR = { Ennis, D.E. and Mader, B.J. and Burnside, K. and Bauce, E. and Despland, E. },
    TITLE = { Is Feeding Behaviour on Foliage Affected by lab-Rearing on Artificial Diet? },
    JOURNAL = { Journal of Insect Behavior },
    YEAR = { 2015 },
    VOLUME = { 28 },
    PAGES = { 147-156 },
    NUMBER = { 2 },
    NOTE = { cited By 0; Article in Press },
    ABSTRACT = { Eastern spruce budworm, Choristoneura fumiferana, larvae were reared on white spruce (Picea glauca) foliage and/or an agar based artificial diet medium for different proportions of their development: fed foliage throughout, fed diet until the 4th instar then foliage for two instars, fed diet until the 6th instar then foliage for 24 h and fed diet only. The insects were then observed feeding on white spruce needles. First, insects reared exclusively on artificial diet exhibited a longer latency to initiate feeding than insects with some prior exposure to foliage. Second, artificial diet-reared insects and those pretreated on foliage for only a few hours had significantly longer meals but lower food consumption than those reared exclusively on foliage or pretreated on foliage for two instars, suggesting that artificial diet-reared insects ingest foliage more slowly during a meal. Third, caterpillars pretreated on foliage for several days, like their diet-reared and short exposure counterparts, had longer intermeal intervals than foliage-reared caterpillars. Finally, subsequent measurements showed that diet-reared budworm have smaller head capsules than foliage-reared insects. These findings show that prior experience influences a folivore’s behaviour on a given food, that insects reared on artificial diet do not develop the same ability to feed on plants as do foliage-reared insects and that different mechanisms of acclimation to a food operate at different time scales. },
    AUTHOR_KEYWORDS = { acclimatization; artificial diet; Choristoneura fumiferana; feeding behavior; pattern of feeding; phenotypic plasticity; Spruce budworm },
    DOCUMENT_TYPE = { Article in Press },
    DOI = { 10.1007/s10905-015-9483-7 },
    PAGE_COUNT = { 10 },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84923325193&partnerID=40&md5=971b6b6a5eb4b8d372486f3f022d53d9 },
}

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