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Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain.

ABSTRACT: The pheromone system of heliothine moths is an optimal model for studying principles underlying higher-order olfactory processing. In Helicoverpa armigera, three male-specific glomeruli receive input about three female-produced signals, the primary pheromone component, serving as an attractant, and two minor constituents, serving a dual function, that is, attraction versus inhibition of attraction. From the antennal-lobe glomeruli, the information is conveyed to higher olfactory centers, including the lateral protocerebrum, via three main paths - of which the medial tract is the most prominent. In this study, we traced physiologically identified medial-tract projection neurons from each of the three male-specific glomeruli with the aim of mapping their terminal branches in the lateral protocerebrum. Our data suggest that the neurons' widespread projections are organized according to behavioral significance, including a spatial separation of signals representing attraction versus inhibition - however, with a unique capacity of switching behavioral consequence based on the amount of the minor components.

SUBMITTER: Kymre JH

PROVIDER: S-EPMC8154038 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain.

Kymre Jonas Hansen JH Liu XiaoLan X Ian Elena E Berge Christoffer Nerland CN Wang GuiRong G Berg Bente Gunnveig BG Zhao XinCheng X Chu Xi X

eLife 20210514

The pheromone system of heliothine moths is an optimal model for studying principles underlying higher-order olfactory processing. In <i>Helicoverpa armigera</i>, three male-specific glomeruli receive input about three female-produced signals, the primary pheromone component, serving as an attractant, and two minor constituents, serving a dual function, that is, attraction versus inhibition of attraction. From the antennal-lobe glomeruli, the information is conveyed to higher olfactory centers, ...[more]

PMID: 33988500

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Dataset Information

Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain.

Publications

Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain.

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