Olfactory activation patterns in the antennal lobe of the sphinx moth, Manduca sexta

Sammanfattning

The sphinx moth Manduca sexta is a well-studied insect with regard to central olfactory functions. Until now, the innervation patterns of olfactory receptor neurons into the array of olfactory glomeruli in the antennal lobe have, however, been unclear. Using optical imaging to visualize calcium dynamics within the antennal lobe we demonstrate specific patterns elicited by sex pheromone components and plant-derived odours. These patterns mainly reflect receptor neuron activity. Within the male-specific macroglomerular complex the two major pheromone components evoke stereotyped activity in either of two macroglomerular complex glomeruli. Based on previous knowledge of output neuron specificity, our results suggest a matching of information between input and output in the macroglomerular complex. Plant odours evoked activity in the sexually isomorphic glomeruli. Two major results were obtained: (1) terpenes and aromatic compounds activate different clusters of glomeruli with only minor overlapping, and (2) the position of certain key glomeruli is fixed in both males and females, which suggests that host-plant related odorants are processed in a similar way in both sexes

Publicerad i

Journal of Comparative Physiology A
2003, volym: 189, nummer: 4, sidor: 301-308
Utgivare: SPRINGER-VERLAG

SLU författare

• Hansson, Bill

  • Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
    

• Carlsson, Mikael

  • Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Miljö- och naturvårdsvetenskap
Trädgårdsvetenskap/hortikultur

Publikationens identifierare

• DOI: https://doi.org/10.1007/s00359-003-0403-5

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/1263