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1 January 2002 Sex Pheromone Reception in the Scarab Beetle Phyllophaga anxia (Coleoptera: Scarabaeidae)
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Abstract

Antennal olfactory receptor neuron responses in the scarab beetle Phyllophaga anxia (LeConte) were investigated using tungsten microelectrodes. Morphological investigations revealed that antennal sensilla are distributed on the entire antennal club lamellae. The female-produced pheromones, L-valine and L-isoleucine methyl esters, were shown to affect two types of olfactory receptor neurons differently. One type of olfactory receptor neurons was excited with increasing pheromone concentrations at low doses (0.01–1 μg), but inhibited at higher doses. The second type was excited only at the high pheromone doses (100–1,000 μg stimulus loading). Both receptor neuron types were affected in the same way by the two pheromone components.

Samuel A. Ochieng, P. S. Robbins, W. L. Roelofs, and T. C. Baker "Sex Pheromone Reception in the Scarab Beetle Phyllophaga anxia (Coleoptera: Scarabaeidae)," Annals of the Entomological Society of America 95(1), 97-102, (1 January 2002). https://doi.org/10.1603/0013-8746(2002)095[0097:SPRITS]2.0.CO;2
Received: 8 June 2001; Accepted: 1 September 2001; Published: 1 January 2002
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