ISHS Acta Horticulturae 472: XVII International Symposium Virus and Virus-Like Diseases of Temperate Fruit Crops
SEARCHING FOR LEAFHOPPER VECTORS OF PHYTOPLASMAS: THE CHOICE OF TRAPPING METHODS |
| Authors: | G. Labonne, J.B. Quiot, F. Lauriaut |
| Abstract:
In order to cover the whole range of leafhopper species infesting an orchard and to increase the number of individuals that can be trapped and tested as potential vectors of apricot chlorotic leaf roll phytoplasma, we compared the performances of different trapping methods. Seven methods were used jointly in the same apricot orchard from june to september 1995 and 1996: sweep net, D-Vac suction trap, yellow sticky boards, Malaise trap, and light trap with 3 sources of light (UV, mercury vapor and incandescent lamp). The yellow traps and Malaise trap provided the same main species in similar proportions. It was deduced that the yellow traps worked more as an interception trap than as an attraction trap. D-Vac suction trap provided large numbers of individuals, including several species that are poorly represented in the other traps. But the range of species and the numbers of individuals depended on the location where the samples were collected. Light traps provided large numbers of leafhoppers and a set of species which were almost absent in the other traps. The 3 light sources provided the same range of species. Mercury vapor and incandescent lamp gave the best results regarding the number of individuals collected. Using the D-Vac has shown that the orchard and its borders look like a mosaic of small biotopes with localized leafhopper populations. In contrast, the light traps attracted a number of non-native species circulating through the orchard. The association of both methods appeared as the most efficient way to monitor the leafhoppers which can be on apricot trees. | |
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