Display of variability of bilateral features in taiga ticks in contrast conditions of habitation
The current research is aimed at studying the changes in a ratio of symmetrical to asymmetrical forms based on the counting bilateral characters in Ixodes persulcatus samples in various living conditions. Phenotypic variation was described with the following indices: (of) for a dispersion of the num...
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Scientific Сentre for Family Health and Human Reproduction Problems
2015
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ftdoajarticles:oai:doaj.org/article:536998b191734c8490446680bb948744 2024-02-27T08:45:51+00:00 Display of variability of bilateral features in taiga ticks in contrast conditions of habitation A. Ya. Nikitin A. S. Novitskaya I. M. Morozov D. E. Gavrikov 2015-02-01T00:00:00Z https://doaj.org/article/536998b191734c8490446680bb948744 RU rus Scientific Сentre for Family Health and Human Reproduction Problems https://www.actabiomedica.ru/jour/article/view/14 https://doaj.org/toc/2541-9420 https://doaj.org/toc/2587-9596 2541-9420 2587-9596 https://doaj.org/article/536998b191734c8490446680bb948744 Acta Biomedica Scientifica, Vol 0, Iss 1, Pp 67-71 (2015) таежный клещ билатеральные признаки условия существования стабильность онтогенеза Science Q article 2015 ftdoajarticles 2024-01-28T02:19:25Z The current research is aimed at studying the changes in a ratio of symmetrical to asymmetrical forms based on the counting bilateral characters in Ixodes persulcatus samples in various living conditions. Phenotypic variation was described with the following indices: (of) for a dispersion of the number of bristles at the left and right side; (Sa) for actual and (St) for theoretical number of symmetrical specimens with the supposition of an independent manifestation of such characters at the both sides of a body; and the difference between Sa and St. 4 bilateral characters were studied on the coxae of the fourth leg of the ticks collected by dragging off the plants outside Irkutsk (299 specimens) and Bratsk (156 specimens). The both territories are characterized by an excess of Sa and St. The σd2 value was proved to be higher among the ticks outside Bratsk where they live in a difficult environment. Given that no differences were revealed in the average values of «Sa-St» index, being characteristic of a subdivision of samples, the observed difference in of values may be considered as a prove of an increased instability during ontogeny under adverse circumstances. Article in Journal/Newspaper taiga Directory of Open Access Journals: DOAJ Articles |
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Directory of Open Access Journals: DOAJ Articles |
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Russian |
topic |
таежный клещ билатеральные признаки условия существования стабильность онтогенеза Science Q |
spellingShingle |
таежный клещ билатеральные признаки условия существования стабильность онтогенеза Science Q A. Ya. Nikitin A. S. Novitskaya I. M. Morozov D. E. Gavrikov Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
topic_facet |
таежный клещ билатеральные признаки условия существования стабильность онтогенеза Science Q |
description |
The current research is aimed at studying the changes in a ratio of symmetrical to asymmetrical forms based on the counting bilateral characters in Ixodes persulcatus samples in various living conditions. Phenotypic variation was described with the following indices: (of) for a dispersion of the number of bristles at the left and right side; (Sa) for actual and (St) for theoretical number of symmetrical specimens with the supposition of an independent manifestation of such characters at the both sides of a body; and the difference between Sa and St. 4 bilateral characters were studied on the coxae of the fourth leg of the ticks collected by dragging off the plants outside Irkutsk (299 specimens) and Bratsk (156 specimens). The both territories are characterized by an excess of Sa and St. The σd2 value was proved to be higher among the ticks outside Bratsk where they live in a difficult environment. Given that no differences were revealed in the average values of «Sa-St» index, being characteristic of a subdivision of samples, the observed difference in of values may be considered as a prove of an increased instability during ontogeny under adverse circumstances. |
format |
Article in Journal/Newspaper |
author |
A. Ya. Nikitin A. S. Novitskaya I. M. Morozov D. E. Gavrikov |
author_facet |
A. Ya. Nikitin A. S. Novitskaya I. M. Morozov D. E. Gavrikov |
author_sort |
A. Ya. Nikitin |
title |
Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
title_short |
Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
title_full |
Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
title_fullStr |
Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
title_full_unstemmed |
Display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
title_sort |
display of variability of bilateral features in taiga ticks in contrast conditions of habitation |
publisher |
Scientific Сentre for Family Health and Human Reproduction Problems |
publishDate |
2015 |
url |
https://doaj.org/article/536998b191734c8490446680bb948744 |
genre |
taiga |
genre_facet |
taiga |
op_source |
Acta Biomedica Scientifica, Vol 0, Iss 1, Pp 67-71 (2015) |
op_relation |
https://www.actabiomedica.ru/jour/article/view/14 https://doaj.org/toc/2541-9420 https://doaj.org/toc/2587-9596 2541-9420 2587-9596 https://doaj.org/article/536998b191734c8490446680bb948744 |
_version_ |
1792055234899476480 |