DULAURENT, Anne-Maïmiti; ROSSI, Jean-Pierre; DEBORDE, Catherine; MOING, Annick; MENASSIEU, Pierre; JACTEL, Herve

doi:10.1111/j.1439-0418.2010.01547.x

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DULAURENT, Anne-Maïmiti
Biodiversité, Gènes & Communautés [BioGeCo]

ROSSI, Jean-Pierre
Biodiversité, Gènes & Communautés [BioGeCo]

DEBORDE, Catherine
Station de physiologie végétale
Centre de Génomique Fonctionnelle de Bordeaux [CGFB]

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Ce document a été publié dans

Journal of Applied Entomology. 2011, vol. 135, n° 3, p. 184-194

Wiley

Résumé en anglais

The longevity of a generalist (Ooencyrtus pityocampae) and a specialist (Baryscapus servadeii) egg parasitoid of the pine processionary moth (Thau-metopoea pityocampa) was compared under laboratory feeding conditions including water and honeydew from aphid species growing on maritime pine (Pinus pinaster) or pedunculate oak (Quercus robur). The longevity of both parasitoid species increased when specimens were fed with honeydew. This increase was larger for the generalist (3.7, 32.0 and 38.0 days) than for the specialist (3.0, 23.3 and 21.5 days) parasitoid species when fed with water, oak and pine aphid honeydew respectively. The phenology of the specialist species B. servadeii is well-adapted with its host availability with or without food supply. The generalist species O. pityocampae could overlap its host emergence curve during 14.0–20.0 days when fed with oak and pine aphid honeydew respectively, vs. no overlap when no supplementary food was provided. Analysis of honeydew composition indicated that sugars and amino acids may have distinct effects on parasitoid longevity.< Réduire

Mots clés

QUERCUS ROBUR

DIET

GENERALIST PARASITOID

SPECIALIST PARASITOID

INSECTE

Mots clés en anglais

BARYSCAPUS SERVADEII

OOENCYRTUS PITYOCAMPAE

THAUMETOPOEA PITYOCAMPA

INSECT

PIN MARITIME

CHENE PEDONCULE