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| Titel: |
Pheromone Traps for the Dissemination of an Entomopathogen by the Damson-hop Aphid Phorodon humuli |
| Auteur: |
Hartfield, C. M. Campbell, C. A. M. Hardie, J. Pickett, J. A. Wadhams, L. J. |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 11 (2001) nr. 3 pagina's 401-410 |
| Jaar: |
2001-06-01 |
| Inhoud: |
Two types of sex pheromone-emitting trap, a simple louvred trap and a commercially-produced wasp trap (Waspy®) designed or modified as delivery systems for entomopathogens, were tested using an isolate of the pathogen Verticillium lecanii . Their efficiencies for capturing winged autumn females (gynoparae) and males of Phorodon humuli in a hop garden and a plum orchard were compared with each other and with catches by yellow-painted water traps. Gynoparae rarely entered either type of pathogen dissemination trap. Males only entered traps that released (1 R , S ,4a R , 7 S , 7a S )-nepetalactol, the sex pheromone of P. humuli . In the hop garden, approximately five times as many males entered the modified Waspy® as entered the louvred traps, whereas in the plum orchard similar numbers of males were caught in both traps. On average, males visited the modified Waspy® trap for 34.1 ±7.9 (SE) min. Males spent about 50% of their time in the arena where the entomopathogen would normally be present and a further 20% of the time on the inside of the arena lid alongside the pheromone source. Out of a sample of 16 live aphids removed from a trap dispensing V. lecanii , 9 died from infection by the pathogen and 5 of the 16 initiated colonies of the fungus after they walked on a sterile agar plate for five minutes. None of the 15 aphids collected from traps without V. lecanii became infected or initiated colonies of the fungus on agar plates. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 11 gevonden artikelen
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