Nom du corpus

Corpus Systématique Animale

Titre du document

Chemoecological studies of the exocrine glandular larval secretions of two chrysomelid species (Coleoptera): Phaedon cochleariae and Chrysomela lapponica

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • oviposition
  • repellents
  • larval secretion
  • Coleoptera
  • Chrysomelidae
  • Phaedon cochleariae
  • Chrysomela lapponica
Nom du fichier dans la ressource
Insectes_v2b_00898
Auteur(s)
  • Jürgen Gross 1
  • Monika Hilker 1
Affiliation(s)
  • 1) Institut für Zoologie, Freie Universität Berlin, Haderslebenerstra?e 9, D-12163, Berlin, Germany
Résumé

The exocrine glandular secretions of larvae of the subfamily Chrysomelinae are known to repel conspecific adults, other competitive phytophagous insects and natural enemies. InPhaedon cochleariae, the intraspecific activity of tlc fractions of the larval secretion was tested in order to examine the ecological significance of two fractions containing minor components and a fraction containing the major compound, the cyclopentanoid monoterpene (epi)chrysomelidial. InChrysomela lapponica, the defensive activity of the larval secretion against ants is known from specimens feeding upon willow or birch. The feeding preferences of larvae and adults ofC. lapponica from a Finnish and a Czech population were tested. The Finnish individuals significantly preferred feeding uponSalix borealis, whereas they hardly fed upon birch. The Czech specimens clearly preferred birch (Betula pubescens) to willow species. Application of salicin onto leaves of a willow species free of this phenolglycoside revealed that the Finnish individuals preferred feeding upon leaves with salicin. On the other hand, the Czech individuals avoided feeding upon leaves ofB. pubescens treated with salicin. The chemical composition of the glandular secretion of the Finnish larvae differed from the one of the Czech larvae. GC-MS-analyses of the secretions revealed that salicylaldehyde was the only major component of the secretion of Finnish larvae feeding upon the salicin-containing willowS. borealis. The glandular secretion of the Czech larvae feeding upon birch contained numerous esters of isobutyric acid and 2-methylbutyric acid. When Czech larvae had fed upon a salicin-containing willow (S. fragilis), the major compounds of their secretion were benzoic acid, salicylalcohol and benzoic acid esters; salicylaldehyde was only detected in traces. Thus,C. lapponica individuals from the Finland population adapted so closely to a salicincontaining willow that they clearly prefer this plant for food and that they obviously derive their main larval defensive compound (salicylaldehyde) from their host-plant.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - entomology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Biochemistry
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
  • 1 - science ; 2 - biochemistry & molecular biology
Identifiant ISTEX
D65F83D083736EB5A27F5A875D94EBA1596A5F92
Revue

CHEMOECOLOGY

Année de publication
1995
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.264
Sous-corpus
  • Insectes
Type de publication
Journal
ark:/67375/1BB-J0MSLZ90-4
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