Laboratory and field evaluation of the pathogenicity of entomopathogenic nematodes to the red palm weevil, Rhynchophorus ferrugineus (Oliv.) (Col.: Curculionidae) |
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| Authors: | M. S. T. Abbas M. M. E. Saleh A. M. Akil |
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| Affiliation: | (1) Institut Valenci? d’Investigacions Agr?ries (IVIA), Centre de Protecci? Vegetal i Biotecnologia, Unitat Associada d’Entomologia Agr?cola UJI-IVIA, Ctra. Montcada-N?quera km 4.5, 46113 Montcada, Spain;(2) Idebio S. L., Pol?gono Industrial el Montalvo, Calle Bell 3, 37008 Salamanca, Spain;(3) Departament de Ci?ncies Agr?ries i del Medi Natural, Unitat Associada d’Entomologia Agr?cola UJI-IVIA, Universitat Jaume I, Campus del Riu Sec, Av. Vicent Sos Baynat s/n, 12071 Castell?n de la Plana, Spain |
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| Abstract: | Ten Egyptian and imported entomopathogenic nematodes were evaluated for their pathogenicity to R. ferrugineus in both the laboratory and the field. In the laboratory, most nematodes were pathogenic to the pest larvae, pupae and adults. Larvae and adults were more susceptible to nematode infection (mostly 100 % mortality) than pupae enclosed in their cocoons. In the field however, the highest insect larval mortality was 66.67% and most of nematodes failed in controlling the pest. Such failure could be due to hot weather, the tunnelling behaviour of the pest larvae and the too much sap in the infested sites in the trunks of palm trees. |
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