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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Autores principales:	A. Ya. Nikitin, A. S. Novitskaya, I. M. Morozov, D. E. Gavrikov
Formato:	article
Lenguaje:	RU
Publicado:	Scientific Сentre for Family Health and Human Reproduction Problems 2015
Materias:	taiga tick bilateral feature living conditions ontogenesis stability Science Q
Acceso en línea:	https://doaj.org/article/536998b191734c8490446680bb948744
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spelling	oai:doaj.org-article:536998b191734c8490446680bb9487442021-11-23T06:14:32ZDisplay of variability of bilateral features in taiga ticks in contrast conditions of habitation2541-94202587-9596https://doaj.org/article/536998b191734c8490446680bb9487442015-02-01T00:00:00Zhttps://www.actabiomedica.ru/jour/article/view/14https://doaj.org/toc/2541-9420https://doaj.org/toc/2587-9596The 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.A. Ya. NikitinA. S. NovitskayaI. M. MorozovD. E. GavrikovScientific Сentre for Family Health and Human Reproduction Problemsarticletaiga tickbilateral featureliving conditionsontogenesis stabilityScienceQRUActa Biomedica Scientifica, Vol 0, Iss 1, Pp 67-71 (2015)
institution	DOAJ
collection	DOAJ
language	RU
topic	taiga tick bilateral feature living conditions ontogenesis stability Science Q
spellingShingle	taiga tick bilateral feature living conditions ontogenesis stability 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
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
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
work_keys_str_mv	AT ayanikitin displayofvariabilityofbilateralfeaturesintaigaticksincontrastconditionsofhabitation AT asnovitskaya displayofvariabilityofbilateralfeaturesintaigaticksincontrastconditionsofhabitation AT immorozov displayofvariabilityofbilateralfeaturesintaigaticksincontrastconditionsofhabitation AT degavrikov displayofvariabilityofbilateralfeaturesintaigaticksincontrastconditionsofhabitation
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Display of variability of bilateral features in taiga ticks in contrast conditions of habitation

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