A <i>Review</i> of Effects of Environment on Brain Size in Insects

Brain size fascinates society as well as researchers since it is a measure often associated with intelligence and was used to define species with high “intellectual capabilities”. In general, brain size is correlated with body size. However, there are disparities in terms of relative brain size betw...

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Main Author: Thomas Carle
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/12/5/461
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author Thomas Carle
author_facet Thomas Carle
author_sort Thomas Carle
collection DOAJ
description Brain size fascinates society as well as researchers since it is a measure often associated with intelligence and was used to define species with high “intellectual capabilities”. In general, brain size is correlated with body size. However, there are disparities in terms of relative brain size between species that may be explained by several factors such as the complexity of social behaviour, the ‘social brain hypothesis’, or learning and memory capabilities. These disparities are used to classify species according to an ‘encephalization quotient’. However, environment also has an important role on the development and evolution of brain size. In this review, I summarise the recent studies looking at the effects of environment on brain size in insects, and introduce the idea that the role of environment might be mediated through the relationship between olfaction and vision. I also discussed this idea with studies that contradict this way of thinking.
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spelling doaj.art-4fa85bc979b0464786e6aa7b77e308762023-11-21T19:59:45ZengMDPI AGInsects2075-44502021-05-0112546110.3390/insects12050461A <i>Review</i> of Effects of Environment on Brain Size in InsectsThomas Carle0Faculty of Biology, Kyushu University, Fukuoka 819-0395, JapanBrain size fascinates society as well as researchers since it is a measure often associated with intelligence and was used to define species with high “intellectual capabilities”. In general, brain size is correlated with body size. However, there are disparities in terms of relative brain size between species that may be explained by several factors such as the complexity of social behaviour, the ‘social brain hypothesis’, or learning and memory capabilities. These disparities are used to classify species according to an ‘encephalization quotient’. However, environment also has an important role on the development and evolution of brain size. In this review, I summarise the recent studies looking at the effects of environment on brain size in insects, and introduce the idea that the role of environment might be mediated through the relationship between olfaction and vision. I also discussed this idea with studies that contradict this way of thinking.https://www.mdpi.com/2075-4450/12/5/461brain sizeenvironmentevolution
spellingShingle Thomas Carle
A <i>Review</i> of Effects of Environment on Brain Size in Insects
Insects
brain size
environment
evolution
title A <i>Review</i> of Effects of Environment on Brain Size in Insects
title_full A <i>Review</i> of Effects of Environment on Brain Size in Insects
title_fullStr A <i>Review</i> of Effects of Environment on Brain Size in Insects
title_full_unstemmed A <i>Review</i> of Effects of Environment on Brain Size in Insects
title_short A <i>Review</i> of Effects of Environment on Brain Size in Insects
title_sort i review i of effects of environment on brain size in insects
topic brain size
environment
evolution
url https://www.mdpi.com/2075-4450/12/5/461
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