Electrophysiological responses of female and male Hypsipyla grandella (Zeller) to Swietenia macrophylla essential oils.
The mahogany shoot borer, Hypsipyla grandella, is one of the most economically important Neotropical forest pest insects because it attacks valuable timber of the Meliaceae. Despite detailed information on the life cycle of H. grandella, factors influencing attack by the shoot borer are not well known. Electroantennogram studies of borer antennae indicate that both female and male moths elicited significant antennal responses to essential oil of the terminal shoots, mature and senescent leaves, in three concentrations. Gamma-himachalene, germacrene D, germacrene A, cadina-1,4-diene, hexadecanoic acid, and ethyl hexadecanoate appeared in all essential oils from Swietenia macrophylla. Germacrene-D and gamma-himachalene were also present in the active essential oil of Cedrela odorata and Toona ciliata. These findings suggest that these compounds play a role in attracting H. grandella to oviposit on the leaves of these plants. The GC-EAD of essential oil from S. macrophylla mature leaves to female H. grandella antennae led to the identification of beta-caryophyllene as the main constituent responsible for the antennae response.
Soares
Marisi G
MG
Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905, São Carlos, SP, Brazil.
Batista-Pereira
Luciane G
LG
Fernandes
João B
JB
Corrêa
Arlene G
AG
da Silva
M Fátima G F
MF
Vieira
Paulo C
PC
Rodrigues Filho
Edson
E
Ohashi
Orlando S
OS
D000818:Animals; D004594:Electrophysiology; D005260:Female; D007915:Lepidoptera / Q000502:physiology*; D008297:Male; D029582:Meliaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000494:pharmacology*; D010058:Oviposition
D009822:Oils, Volatile