Age-related mushroom body expansion in male sweat bees and bumble bees

Abstract A well-documented phenomenon among social insects is that brain changes occur prior to or at the onset of certain experiences, potentially serving to prime the brain for specific tasks. This insight comes almost exclusively from studies considering developmental maturation in females. As a...

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Autores principales:	Mallory A. Hagadorn, Karlee Eck, Matthew Del Grosso, Xavier Haemmerle, William T. Wcislo, Karen M. Kapheim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/badc91c9f3f14334a85689dea95b57de
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spelling	oai:doaj.org-article:badc91c9f3f14334a85689dea95b57de2021-12-02T18:53:18ZAge-related mushroom body expansion in male sweat bees and bumble bees10.1038/s41598-021-96268-w2045-2322https://doaj.org/article/badc91c9f3f14334a85689dea95b57de2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96268-whttps://doaj.org/toc/2045-2322Abstract A well-documented phenomenon among social insects is that brain changes occur prior to or at the onset of certain experiences, potentially serving to prime the brain for specific tasks. This insight comes almost exclusively from studies considering developmental maturation in females. As a result, it is unclear whether age-related brain plasticity is consistent across sexes, and to what extent developmental patterns differ. Using confocal microscopy and volumetric analyses, we investigated age-related brain changes coinciding with sexual maturation in the males of the facultatively eusocial sweat bee, Megalopta genalis, and the obligately eusocial bumble bee, Bombus impatiens. We compared volumetric measurements between newly eclosed and reproductively mature males kept isolated in the lab. We found expansion of the mushroom bodies—brain regions associated with learning and memory—with maturation, which were consistent across both species. This age-related plasticity may, therefore, play a functionally-relevant role in preparing male bees for mating, and suggests that developmentally-driven neural restructuring can occur in males, even in species where it is absent in females.Mallory A. HagadornKarlee EckMatthew Del GrossoXavier HaemmerleWilliam T. WcisloKaren M. KapheimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mallory A. Hagadorn Karlee Eck Matthew Del Grosso Xavier Haemmerle William T. Wcislo Karen M. Kapheim Age-related mushroom body expansion in male sweat bees and bumble bees
description	Abstract A well-documented phenomenon among social insects is that brain changes occur prior to or at the onset of certain experiences, potentially serving to prime the brain for specific tasks. This insight comes almost exclusively from studies considering developmental maturation in females. As a result, it is unclear whether age-related brain plasticity is consistent across sexes, and to what extent developmental patterns differ. Using confocal microscopy and volumetric analyses, we investigated age-related brain changes coinciding with sexual maturation in the males of the facultatively eusocial sweat bee, Megalopta genalis, and the obligately eusocial bumble bee, Bombus impatiens. We compared volumetric measurements between newly eclosed and reproductively mature males kept isolated in the lab. We found expansion of the mushroom bodies—brain regions associated with learning and memory—with maturation, which were consistent across both species. This age-related plasticity may, therefore, play a functionally-relevant role in preparing male bees for mating, and suggests that developmentally-driven neural restructuring can occur in males, even in species where it is absent in females.
format	article
author	Mallory A. Hagadorn Karlee Eck Matthew Del Grosso Xavier Haemmerle William T. Wcislo Karen M. Kapheim
author_facet	Mallory A. Hagadorn Karlee Eck Matthew Del Grosso Xavier Haemmerle William T. Wcislo Karen M. Kapheim
author_sort	Mallory A. Hagadorn
title	Age-related mushroom body expansion in male sweat bees and bumble bees
title_short	Age-related mushroom body expansion in male sweat bees and bumble bees
title_full	Age-related mushroom body expansion in male sweat bees and bumble bees
title_fullStr	Age-related mushroom body expansion in male sweat bees and bumble bees
title_full_unstemmed	Age-related mushroom body expansion in male sweat bees and bumble bees
title_sort	age-related mushroom body expansion in male sweat bees and bumble bees
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/badc91c9f3f14334a85689dea95b57de
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Age-related mushroom body expansion in male sweat bees and bumble bees

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