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Physiological state influences the antennal response of A nastrepha obliqua to male and host volatiles
Author(s) -
Reyes Humberto,
Malo Edi A.,
Toledo Jorge,
CruzEsteban Samuel,
Rojas Julio C.
Publication year - 2017
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/phen.12157
Subject(s) - biology , methoprene , electroantennography , ethyl butyrate , ethyl hexanoate , juvenile hormone , host (biology) , botany , zoology , sugar , sex pheromone , food science , insect , ecology , flavor , aroma
The sexual and host‐related behaviours of the fruit fly A nastrepha obliqua M acquart ( D iptera: T ephritidae) are mediated by volatile compounds. However, whether the physiological state of this species affects its antennal and behavioural responses to semiochemicals is unknown. The effects of age, mating status, diet and the topical application of methoprene, a J uvenile hormone analogue ( JHA ), on the antennal sensitivity of this tephritid fruit fly species to selected male [( Z )‐3‐nonenol] and host fruit volatiles (ethyl benzoate, ethyl hexanoate, ethyl butyrate and trans ‐β‐ocimene) are investigated using electroantennography ( EAG ). Overall, ( Z )‐3‐nonenol and ethyl benzoate elicit the highest EAG responses in both sexes. Flies of both sexes aged 1, 5 and 10 days old show higher EAG responses to the tested compounds compared with flies aged 20 days old. Virgin females and males show higher EAG responses to volatile compounds than mated flies. Females and males fed with sugar plus protein show higher antennal responses to volatiles compared with flies fed sugar or protein alone. Flies of both sexes treated with methoprene show higher antennal responses than flies treated with acetone (control). These results suggest that the peripheral olfactory system in A . obliqua is modulated by the physiological state of the flies.