1. CIRAD, UPR Bioagresseurs, F-97387 Kourou, French Guiana, France, and Bioagresseurs, Univ. Montpellier, CIRAD, Montpellier, France
2. CIRAD, UMR AGAP, F-34398 Montpellier, France, and AGAP, Univ. Montpellier, CIRAD, INRA, INRIA, Montpellier SupAgro, Montpellier, France