Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Effects of Beauveria bassiana, Heterorhabditis bacteriophora, H. megidis and Sterinernema feltiae on the Mediterranean fruit fly Ceratitis capitata and the very sensitive braconid Psyttalia concolor.
Year:2008
Research Areas
  • Crop production
Information
Abstract
Laboratory experiments were set up to measure the susceptibility of the pest Ceratitis capitata and the braconid Psyttalia concolor (very sensitive to pesticides), to three commercial nematodes available in Spain [maximum field recommended rate (MFRC): 100 infective juveniles (IJ)/cm2]: Steinernema feltiae, Heterorhabditis bacteriophora, H. megidis and the entomopathogenic fungus Beauveria bassiana (MFRC 1000 ml cp/hl; 2.3 x 109 conidia/ml cp). The neurotoxic malathion, used worldwide for the control of C. capitata was used as positive standard (150 ml ai/hl). When nematodes were applied to the pupation medium of C. capitata (vermiculite, 10% humidity), S. feltiae and H. bacteriophora were as effective as malathion, inhibiting practically 100% of adult emergence at a 2-fold MFRC and 75% r.h. Efficacy of nematodes was much higher at 75% r.h. than at 30% r.h. irrespective of the dose used. The three nematodes decreased the progeny size of P. concolor when the parasitoid parasitized C. capitata L3 larvae, treated with the MFRC under 75% r.h., but significant reductions were only scored for S. feltiae. The fungus B. bassiana was tested on adults of the pest and the parasitoid (75% r.h.; 25ºC) by residual contact, topical application and ingestion, as well as by treatment of the oviposition gauze and direct spray on the pest, and vía contaminated hosts on the parasitoid. It did not cause mortality at 3 days or affected reproduction of C. capitata (malathion gave 100% mortality), except when applied at a 10-fold MFRC at the oviposition gauze (significantly decreased fertility by 21.7%). The biopesticide did not cause mortality on P. concolor in contrast with malathion (100%), but it significantly decreased its beneficial capacity by residual contact or vía treated host larvae (lower progeny size) or by ingestion (lower number of attacked hosts).
International
Si
JCR
No
Title
IOBC/WPRS Bulletin
ISBN
9789290672128
Impact factor JCR
0
Impact info
Volume
35
Journal number
0
From page
113
To page
121
Month
ENERO
Ranking
Participants
  • Participante: Elena Corrales (UPM)
  • Participante: Guy Smagghe (Ghent University)
  • Autor: Elisa Viñuela Sandoval (UPM)
  • Participante: Manuel González-Núñez (INIA)
  • Autor: Maria Pilar Medina Velez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Manejo Integrado de Plagas
  • Departamento: Producción Vegetal: Botánica y Protección Vegetal
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