First report of <Emphasis Type="Italic">Harmonia axyridis</Emphasis> Pallas being attacked by <Emphasis Type="Italic">Dinocampus coccinellae</Emphasis> Schrank in Canada |
| |
Authors: | Email author" target="_blank">Annabelle?FirlejEmail author Guy?Boivin éric?Lucas Daniel?Coderre |
| |
Institution: | (1) Université du Québec à Montréal, Succursale Centre-ville, C.P. 8888, Montréal (Qc), Canada, H3C 3P8;(2) Agriculture et Agroalimentaire Canada, Centre de Recherche et de Développement en Horticulture, 430, Boul. Gouin, St-Jean-sur-Richelieu (Qc), J3B 3E6, Canada |
| |
Abstract: | Field parasitism of two lady beetles, a recently introduced species, Harmonia axyridis Pallas, and an indigenous species, Coleomegilla maculata lengi Timberlake, by Dinocampus coccinellae Schrank (Hymenoptera: Braconidae) was investigated in southwestern Québec. Adult coccinellids were sampled from June to September 2001 in alfalfa and corn fields. Parasitism rates were recorded by dissection and rearing of coccinellids in controlled condition. The average proportions of coccinellids with a parasitoid larva were 4.6%for H. axyridis and 32%for C. maculata but 0%of the H. axyridis and 5.9%of theC. maculatawere successfully parasitized. In July, more C. maculata than H. axyridiswere found to be parasitized and among all individuals dissected, C. maculata were more frequently found superparasitized than H. axyridis. Our results suggest that D. coccinellae is not well adapted to H. axyridis in Quebec. This is the first mention of H. axyridis being attacked by D. coccinellae in Canada. |
| |
Keywords: | Coleomegilla maculata lengi Dinocampus coccinellae exotic species field parasitism rate first record Harmonia axyridis |
本文献已被 SpringerLink 等数据库收录! |
|