INVESTIGADORES
BUTELER Micaela
artículos
Título:
Behavioural responses of wheat stem sawflies to wheat volatiles
Autor/es:
PIESIK, D.; D. K. WEAVER; J. B. RUNYON; M. BUTELER; G. E. PECK; W. L. MORRILL
Revista:
Agricultural and Forest Entomology
Editorial:
The Royal Entomological Society
Referencias:
Lugar: Londres; Año: 2008 vol. 10 p. 245 - 253
Resumen:
Abstract
1 Adult wheat stem sawflies Cephus cinctus, pests of cultivated cereals that also
infests wild grasses, migrate into wheat fields where they oviposit in elongating,
succulent stems.
2 Volatiles released by wheat plants at susceptible stages were analyzed to determine
potential semiochemical compounds. Seven major compounds were identified
and quantified.
3 A Y-tube bioassay was developed to evaluate upwind orientation of adult sawflies
in response to an airstream that passed over elongated wheat plants. The bioassay
was also conducted with synthetic volatile compounds. The compounds were
tested using a range of concentrations spanning those identified in the airstream
passing over wheat plants.
4 A significant number of adult females were attracted to wheat plants when given
a choice of either purified air or the air passing over plants.
5 A significant number of female C. cinctus were attracted to ( Z )-3-hexenyl acetate,1 Adult wheat stem sawflies Cephus cinctus, pests of cultivated cereals that also
infests wild grasses, migrate into wheat fields where they oviposit in elongating,
succulent stems.
2 Volatiles released by wheat plants at susceptible stages were analyzed to determine
potential semiochemical compounds. Seven major compounds were identified
and quantified.
3 A Y-tube bioassay was developed to evaluate upwind orientation of adult sawflies
in response to an airstream that passed over elongated wheat plants. The bioassay
was also conducted with synthetic volatile compounds. The compounds were
tested using a range of concentrations spanning those identified in the airstream
passing over wheat plants.
4 A significant number of adult females were attracted to wheat plants when given
a choice of either purified air or the air passing over plants.
5 A significant number of female C. cinctus were attracted to ( Z )-3-hexenyl acetate,C. cinctus were attracted to ( Z )-3-hexenyl acetate,
B -ocimene, and ( Z )-3-hexen-1-ol, but were repelled by 6-methyl-5-hepten-
2-one. Females did not respond to ( E )-2-hexenal, or ( E )-2-hexenyl acetate. The
behavioural responses were concentration dependent; the highest tested concentration
of ( Z )-3-hexenyl acetate was repellent to females of this species.
6 Adult males did not discriminate between air passing over wheat plants and air
from a purified airstream. Males did not respond to any tested synthetic compound
at any concentration.
7 The present study demonstrates for the first time that adult females of wheat stem
sawfly display innate behaviours in response to synthetic volatiles. These results
provide a basis for the potential development of resistant wheat varieties and for
the development of semiochemically-based pest management.-ocimene, and ( Z )-3-hexen-1-ol, but were repelled by 6-methyl-5-hepten-
2-one. Females did not respond to ( E )-2-hexenal, or ( E )-2-hexenyl acetate. The
behavioural responses were concentration dependent; the highest tested concentration
of ( Z )-3-hexenyl acetate was repellent to females of this species.
6 Adult males did not discriminate between air passing over wheat plants and air
from a purified airstream. Males did not respond to any tested synthetic compound
at any concentration.
7 The present study demonstrates for the first time that adult females of wheat stem
sawfly display innate behaviours in response to synthetic volatiles. These results
provide a basis for the potential development of resistant wheat varieties and for
the development of semiochemically-based pest management.E )-2-hexenal, or ( E )-2-hexenyl acetate. The
behavioural responses were concentration dependent; the highest tested concentration
of ( Z )-3-hexenyl acetate was repellent to females of this species.
6 Adult males did not discriminate between air passing over wheat plants and air
from a purified airstream. Males did not respond to any tested synthetic compound
at any concentration.
7 The present study demonstrates for the first time that adult females of wheat stem
sawfly display innate behaviours in response to synthetic volatiles. These results
provide a basis for the potential development of resistant wheat varieties and for
the development of semiochemically-based pest management.Z )-3-hexenyl acetate was repellent to females of this species.
6 Adult males did not discriminate between air passing over wheat plants and air
from a purified airstream. Males did not respond to any tested synthetic compound
at any concentration.
7 The present study demonstrates for the first time that adult females of wheat stem
sawfly display innate behaviours in response to synthetic volatiles. These results
provide a basis for the potential development of resistant wheat varieties and for
the development of semiochemically-based pest management.