Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris

Abstract Sociality is classified as one of the major transitions in evolution, with the largest number of eusocial species found in the insect order Hymenoptera, including the Apini (honey bees) and the Bombini (bumble bees). Bumble bees and honey bees not only differ in their social organization an...

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Autores principales:	Marcel Mertes, Julie Carcaud, Jean-Christophe Sandoz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/384484c1ee354dd9be400ce7363db393
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spelling	oai:doaj.org-article:384484c1ee354dd9be400ce7363db3932021-12-02T15:49:50ZOlfactory coding in the antennal lobe of the bumble bee Bombus terrestris10.1038/s41598-021-90400-62045-2322https://doaj.org/article/384484c1ee354dd9be400ce7363db3932021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90400-6https://doaj.org/toc/2045-2322Abstract Sociality is classified as one of the major transitions in evolution, with the largest number of eusocial species found in the insect order Hymenoptera, including the Apini (honey bees) and the Bombini (bumble bees). Bumble bees and honey bees not only differ in their social organization and foraging strategies, but comparative analyses of their genomes demonstrated that bumble bees have a slightly less diverse family of olfactory receptors than honey bees, suggesting that their olfactory abilities have adapted to different social and/or ecological conditions. However, unfortunately, no precise comparison of olfactory coding has been performed so far between honey bees and bumble bees, and little is known about the rules underlying olfactory coding in the bumble bee brain. In this study, we used in vivo calcium imaging to study olfactory coding of a panel of floral odorants in the antennal lobe of the bumble bee Bombus terrestris. Our results show that odorants induce reproducible neuronal activity in the bumble bee antennal lobe. Each odorant evokes a different glomerular activity pattern revealing this molecule’s chemical structure, i.e. its carbon chain length and functional group. In addition, pairwise similarity among odor representations are conserved in bumble bees and honey bees. This study thus suggests that bumble bees, like honey bees, are equipped to respond to odorants according to their chemical features.Marcel MertesJulie CarcaudJean-Christophe SandozNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marcel Mertes Julie Carcaud Jean-Christophe Sandoz Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
description	Abstract Sociality is classified as one of the major transitions in evolution, with the largest number of eusocial species found in the insect order Hymenoptera, including the Apini (honey bees) and the Bombini (bumble bees). Bumble bees and honey bees not only differ in their social organization and foraging strategies, but comparative analyses of their genomes demonstrated that bumble bees have a slightly less diverse family of olfactory receptors than honey bees, suggesting that their olfactory abilities have adapted to different social and/or ecological conditions. However, unfortunately, no precise comparison of olfactory coding has been performed so far between honey bees and bumble bees, and little is known about the rules underlying olfactory coding in the bumble bee brain. In this study, we used in vivo calcium imaging to study olfactory coding of a panel of floral odorants in the antennal lobe of the bumble bee Bombus terrestris. Our results show that odorants induce reproducible neuronal activity in the bumble bee antennal lobe. Each odorant evokes a different glomerular activity pattern revealing this molecule’s chemical structure, i.e. its carbon chain length and functional group. In addition, pairwise similarity among odor representations are conserved in bumble bees and honey bees. This study thus suggests that bumble bees, like honey bees, are equipped to respond to odorants according to their chemical features.
format	article
author	Marcel Mertes Julie Carcaud Jean-Christophe Sandoz
author_facet	Marcel Mertes Julie Carcaud Jean-Christophe Sandoz
author_sort	Marcel Mertes
title	Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
title_short	Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
title_full	Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
title_fullStr	Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
title_full_unstemmed	Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris
title_sort	olfactory coding in the antennal lobe of the bumble bee bombus terrestris
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/384484c1ee354dd9be400ce7363db393
work_keys_str_mv	AT marcelmertes olfactorycodingintheantennallobeofthebumblebeebombusterrestris AT juliecarcaud olfactorycodingintheantennallobeofthebumblebeebombusterrestris AT jeanchristophesandoz olfactorycodingintheantennallobeofthebumblebeebombusterrestris
_version_	1718385683735773184

Olfactory coding in the antennal lobe of the bumble bee Bombus terrestris

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