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

Published online by Cambridge University Press:  31 May 2012

M. O. Harrell ,
D. M. Benjamin ,
J. G. Berbee  and
T. R. Burkot
M. O. Harrell
Affiliation:
Assistant Professor, Department of Forestry, Fisheries and Wildlife, University of Nebraska-Lincoln.
D. M. Benjamin
Affiliation:
Professor, Department of Entomology, University of Wisconsin-Madison.
J. G. Berbee
Affiliation:
Professor, Department of Plant Pathology, University of Wisconsin-Madison.
T. R. Burkot
Affiliation:
Research Assistant, Department of Entomology, University of Wisconsin-Madison.
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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.

Résumé

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.

Type
Articles
Information
The Canadian Entomologist , Volume 114 , Issue 8 , August 1982 , pp. 743 - 749
Copyright
Copyright © Entomological Society of Canada 1982

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References

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