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CONSUMPTION AND UTILIZATION OF LEAF TISSUE OF TISSUE-CULTURED POPULUS × EURAMERICANA BY THE COTTONWOOD LEAF BEETLE, CHRYSOMELA SCRIPTA (COLEOPTERA: CHRYSOMELIDAE)

  • M. O. Harrell (a1), D. M. Benjamin (a2), J. G. Berbee (a3) and T. R. Burkot (a4)

Abstract

Chrysomela scripta Fabricius adults showed a feeding preference for the youngest, most succulent leaves of tissue-cultured Populus × euramericana. Larvae fed equally on all leaves with water contents greater than 73%. Larvae chose shoot bark for feeding after all leaves with water contents greater that 70% had been consumed. Larvae reared on immature foliage had shorter developmental times and higher prepupal weights than those reared on mature foliage.

Des adultes de Chrysomela scripta ont montré une préférence alimentaire pour les f-euilles les plus jeunes et les plus succulentes de Populus × euramericana en culture de tissu. Les larves se sont alimentées également sur toutes les feuilles dont la teneur en eau dépassait 73%. Les larves ont choisi de consommer l'écorce des pousses après que toutes les feuilles dont la teneur en eau était supérieure à 70% aient été consommées. Les larves élevées sur du feuillage immature ont montré un temps de développement raccourci et un poids prépupal plus élevé que celles élevées sur du feuillage mature.

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References

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CONSUMPTION AND UTILIZATION OF LEAF TISSUE OF TISSUE-CULTURED POPULUS × EURAMERICANA BY THE COTTONWOOD LEAF BEETLE, CHRYSOMELA SCRIPTA (COLEOPTERA: CHRYSOMELIDAE)

  • M. O. Harrell (a1), D. M. Benjamin (a2), J. G. Berbee (a3) and T. R. Burkot (a4)

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