Effect of plant volatiles in Cydia molesta responses to pheromones (quantity and qualitatively)
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Data
2011
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Editora
IPCB. ESA
Resumo
Our work will focus on the effect of plant volatiles in Cydia molesta responses to
pheromone. Volatiles emitted from host plants often synergism or enhance insect
responses to suboptimal (under) sex pheromone doses quantity and qualitatively
(pheromone and %E).
The first goal of our work consisted in established, in the field under natural
circumstances, a pheromone dose-response curve to determine a suboptimal
pheromone dose. To concretize this, an Orchard block of Peach and Nectarine trees
was used to test male capture to delta traps, containing a range of dosages. The tested
treatments were: Hexane, 1μg, 10 μg, 100 μg, 1mg and 10 mg. We decide to use 1 mg
as optimal and 100 μg as suboptimal for our experiment.
Previous data (laboratory) show that comparing the dose response in the field
and in the laboratory the curves do not overlap. In the field a higher concentration is
required to elicit responses.
According this mentioned conditions, we wondered if plant volatiles also
synergize “off-blends” in under or over dose. Different proportions of (E)-8-dodecenyl
acetate (E8-12:Ac) were tested in laboratory to verify which one was the optimal
quantity in the complete pheromone blend ratio (2, 4, 6, 8, 10, 20, 30, 40, 50, 60, 70,
80, 90 and 100 ng). Results showed that 10 ng was the optimal quantity in ratio to our
laboratory population.
We compare USA and Italian population of Cydia molesta and with this, we
found that the curve response to %E E8-12:Ac of our Italian population is very different
from the USA population. This can be explained by the fact that populations may be
genetically different.
With this knowledge, biological control can became more efficient.
Descrição
Obteve a classificação de 17 valores.
Disponível na Biblioteca da ESACB na cota C30-26925TFCPAG.
Disponível na Biblioteca da ESACB na cota C30-26925TFCPAG.
Palavras-chave
Cydia molesta , Sex pheromones , Pheromone dose-response curves , (E)-8-dodecenyl acetate
Citação
MOURÃO, Alexandre Levi Garcia (2011) - Effect of plant volatiles in Cydia molesta responses to pheromones (quantity and qualitatively). Castelo Branco. IPCB. ESA. 1 CD-ROM. Relatório do Trabalho de Fim de Curso em Engenharia Agronómica - ramo Agronomia.