Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations
Fluctuating asymmetry (FA) in nine species of small mammals (Insectivora and Rodentia) was estimated using 10 cranial features (foramina for nerves and blood vessels). The main criterion was the occurrence of the fluctuating asymmetry manifestations (OFAM). A total of 2300 skulls collected in the ta...
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2016
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ftdoajarticles:oai:doaj.org/article:0c8ebefa368f4a12bf5d909826de1e3c 2023-05-15T18:30:34+02:00 Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations Elena Shadrina Yakov Vol’pert 2016-11-01T00:00:00Z https://doi.org/10.3390/sym8120142 https://doaj.org/article/0c8ebefa368f4a12bf5d909826de1e3c EN eng MDPI AG http://www.mdpi.com/2073-8994/8/12/142 https://doaj.org/toc/2073-8994 2073-8994 doi:10.3390/sym8120142 https://doaj.org/article/0c8ebefa368f4a12bf5d909826de1e3c Symmetry, Vol 8, Iss 12, p 142 (2016) fluctuating asymmetry developmental stability small mammals population age environmental stress Mathematics QA1-939 article 2016 ftdoajarticles https://doi.org/10.3390/sym8120142 2022-12-30T23:54:25Z Fluctuating asymmetry (FA) in nine species of small mammals (Insectivora and Rodentia) was estimated using 10 cranial features (foramina for nerves and blood vessels). The main criterion was the occurrence of the fluctuating asymmetry manifestations (OFAM). A total of 2300 skulls collected in the taiga and forest-tundra of Yakutia (Northeast Asia) were examined. The examined species are characterized by comparable OFAM values in the vast territories of the taiga zone; on the ecological periphery of the range an increased FA level is registered. Asymmetric manifestations in analyzed features are equally likely to occur in males and females. OFAM values in juveniles are higher than in adults; this difference is more pronounced on the periphery of the geographic range. Among juveniles, lower FA levels are observed in individuals that have bred. It can be surmised that the risk of elimination of individuals with high FA levels increases in stressful periods (active reproduction and winter). In conditions that are close to optimal, populations demonstrate relatively homogeneous FA levels, while on the periphery of the area an increase in occurrence of disturbances in developmental stability is observed, which leads, on one hand, to higher average FA for the population and, on the other hand, to heterogeneity of the population in this parameter. Article in Journal/Newspaper taiga Tundra Yakutia Directory of Open Access Journals: DOAJ Articles Symmetry 8 12 142 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
fluctuating asymmetry developmental stability small mammals population age environmental stress Mathematics QA1-939 |
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fluctuating asymmetry developmental stability small mammals population age environmental stress Mathematics QA1-939 Elena Shadrina Yakov Vol’pert Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
topic_facet |
fluctuating asymmetry developmental stability small mammals population age environmental stress Mathematics QA1-939 |
description |
Fluctuating asymmetry (FA) in nine species of small mammals (Insectivora and Rodentia) was estimated using 10 cranial features (foramina for nerves and blood vessels). The main criterion was the occurrence of the fluctuating asymmetry manifestations (OFAM). A total of 2300 skulls collected in the taiga and forest-tundra of Yakutia (Northeast Asia) were examined. The examined species are characterized by comparable OFAM values in the vast territories of the taiga zone; on the ecological periphery of the range an increased FA level is registered. Asymmetric manifestations in analyzed features are equally likely to occur in males and females. OFAM values in juveniles are higher than in adults; this difference is more pronounced on the periphery of the geographic range. Among juveniles, lower FA levels are observed in individuals that have bred. It can be surmised that the risk of elimination of individuals with high FA levels increases in stressful periods (active reproduction and winter). In conditions that are close to optimal, populations demonstrate relatively homogeneous FA levels, while on the periphery of the area an increase in occurrence of disturbances in developmental stability is observed, which leads, on one hand, to higher average FA for the population and, on the other hand, to heterogeneity of the population in this parameter. |
format |
Article in Journal/Newspaper |
author |
Elena Shadrina Yakov Vol’pert |
author_facet |
Elena Shadrina Yakov Vol’pert |
author_sort |
Elena Shadrina |
title |
Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
title_short |
Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
title_full |
Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
title_fullStr |
Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
title_full_unstemmed |
Fluctuating Asymmetry of Craniological Features of Small Mammals as a Reflection of Heterogeneity of Natural Populations |
title_sort |
fluctuating asymmetry of craniological features of small mammals as a reflection of heterogeneity of natural populations |
publisher |
MDPI AG |
publishDate |
2016 |
url |
https://doi.org/10.3390/sym8120142 https://doaj.org/article/0c8ebefa368f4a12bf5d909826de1e3c |
genre |
taiga Tundra Yakutia |
genre_facet |
taiga Tundra Yakutia |
op_source |
Symmetry, Vol 8, Iss 12, p 142 (2016) |
op_relation |
http://www.mdpi.com/2073-8994/8/12/142 https://doaj.org/toc/2073-8994 2073-8994 doi:10.3390/sym8120142 https://doaj.org/article/0c8ebefa368f4a12bf5d909826de1e3c |
op_doi |
https://doi.org/10.3390/sym8120142 |
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Symmetry |
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8 |
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12 |
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142 |
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1766214089011363840 |