Chem. Senses 26: 1175-1186,
2001
© Oxford University Press 2001
Detection of Sex Pheromone Components in Manduca sexta (L.)
Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ-166 10 Prague 6, Czech Republic 1 Ecological Chemistry Group, Organic Chemistry, KTH, SE-100 44 Stockholm, Sweden 2 Department of Crop Science, Swedish University of Agricultural Sciences, SE-2230 53 Alnarp, Sweden
Correspondence to be sent to: Dr Blanka Kalinová, Institute of Organic Chemistry and Biochemistry ASCR, Flemingovo nám. 2, CZ-166 10 Prague 6, Czech Republic. e-mail: blanka{at}uochb.cas.cz
The ability of olfactory receptor neurons to detect female-produced sex pheromone components and a limited sample of potential host plant odours was studied by single-sensillum recordings from olfactory sensilla present on male and female antennae in Manduca sexta. The majority of pheromone-sensitive receptor neurons examined in males was specialized for detection of the two major pheromone components, E10,Z12-hexadecadienal and E10,E12,Z14-hexadecatrienal or E10,E12,E14-hexadecatrienal. New olfactory receptor neurons tuned to the minor components E10,E12-hexadecadienal and Z11-hexadecenal were found. In females, olfactory receptor neurons specific to Z11-hexadecanal were discovered. Pheromone components and host volatiles were detected by separate sets of receptor neurons.
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