Constant neuropilar ratio in the insect brain

Abstract Revealing scaling rules is necessary for understanding the morphology, physiology and evolution of living systems. Studies of animal brains have revealed both general patterns, such as Haller's rule, and patterns specific for certain animal taxa. However, large-scale studies aimed at s...

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Autores principales:	Alexey A. Polilov, Anastasia A. Makarova
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d0f64c95f20846288434a7c0d6c3eb9e
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spelling	oai:doaj.org-article:d0f64c95f20846288434a7c0d6c3eb9e2021-12-02T12:33:05ZConstant neuropilar ratio in the insect brain10.1038/s41598-020-78599-22045-2322https://doaj.org/article/d0f64c95f20846288434a7c0d6c3eb9e2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78599-2https://doaj.org/toc/2045-2322Abstract Revealing scaling rules is necessary for understanding the morphology, physiology and evolution of living systems. Studies of animal brains have revealed both general patterns, such as Haller's rule, and patterns specific for certain animal taxa. However, large-scale studies aimed at studying the ratio of the entire neuropil and the cell body rind in the insect brain have never been performed. Here we performed morphometric study of the adult brain in 37 insect species of 26 families and ten orders, ranging in volume from the smallest to the largest by a factor of more than 4,000,000, and show that all studied insects display a similar ratio of the volume of the neuropil to the cell body rind, 3:2. Allometric analysis for all insects shows that the ratio of the volume of the neuropil to the volume of the brain changes strictly isometrically. Analyses within particular taxa, size groups, and metamorphosis types also reveal no significant differences in the relative volume of the neuropil; isometry is observed in all cases. Thus, we establish a new scaling rule, according to which the relative volume of the entire neuropil in insect brain averages 60% and remains constant.Alexey A. PolilovAnastasia A. MakarovaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexey A. Polilov Anastasia A. Makarova Constant neuropilar ratio in the insect brain
description	Abstract Revealing scaling rules is necessary for understanding the morphology, physiology and evolution of living systems. Studies of animal brains have revealed both general patterns, such as Haller's rule, and patterns specific for certain animal taxa. However, large-scale studies aimed at studying the ratio of the entire neuropil and the cell body rind in the insect brain have never been performed. Here we performed morphometric study of the adult brain in 37 insect species of 26 families and ten orders, ranging in volume from the smallest to the largest by a factor of more than 4,000,000, and show that all studied insects display a similar ratio of the volume of the neuropil to the cell body rind, 3:2. Allometric analysis for all insects shows that the ratio of the volume of the neuropil to the volume of the brain changes strictly isometrically. Analyses within particular taxa, size groups, and metamorphosis types also reveal no significant differences in the relative volume of the neuropil; isometry is observed in all cases. Thus, we establish a new scaling rule, according to which the relative volume of the entire neuropil in insect brain averages 60% and remains constant.
format	article
author	Alexey A. Polilov Anastasia A. Makarova
author_facet	Alexey A. Polilov Anastasia A. Makarova
author_sort	Alexey A. Polilov
title	Constant neuropilar ratio in the insect brain
title_short	Constant neuropilar ratio in the insect brain
title_full	Constant neuropilar ratio in the insect brain
title_fullStr	Constant neuropilar ratio in the insect brain
title_full_unstemmed	Constant neuropilar ratio in the insect brain
title_sort	constant neuropilar ratio in the insect brain
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/d0f64c95f20846288434a7c0d6c3eb9e
work_keys_str_mv	AT alexeyapolilov constantneuropilarratiointheinsectbrain AT anastasiaamakarova constantneuropilarratiointheinsectbrain
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Constant neuropilar ratio in the insect brain

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