An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view

Correlation of a trait with environmental factors is a common means of measuring natural selection in natural populations If the same correlation is seen in independent groups of populations over a wide area, selection is then a likely explanation. Natural populations of T. pallidipennis (2n = 23. X...

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Detalles Bibliográficos
Autores principales: Colombo, P.C., Confalonieri, V.A.
Formato: JOUR
Materias:
altitude
argentina
article
chromosome
chromosome inversion
chromosome polymorphism
environmental factor
genetic selection
natural population
natural selection
nonhuman
orthoptera
pericentric chromosome inversion
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00180661_v125_n2-3_p289_Colombo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00180661_v125_n2-3_p289_Colombo
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spelling todo:paper_00180661_v125_n2-3_p289_Colombo2023-10-03T14:15:12Z An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view Colombo, P.C. Confalonieri, V.A. altitude argentina article chromosome chromosome inversion chromosome polymorphism environmental factor genetic selection natural population natural selection nonhuman orthoptera pericentric chromosome inversion Correlation of a trait with environmental factors is a common means of measuring natural selection in natural populations If the same correlation is seen in independent groups of populations over a wide area, selection is then a likely explanation. Natural populations of T. pallidipennis (2n = 23. X0) polymorphic for 3-7 pencentric inversions in 4 medium-sized pairs - show altitudinal clines for 9 chromosome sequences over a wide area in Argentina. Joint analysis has shown correlations with latitude and longitude. In order to identify the climatic variables responsible for this clinal variation, 7 populations sited on an altitudinal gradient were scored for inversion frequency. Multiple regression analyses among chromosome frequencies and environmental variables do not only confirm the consistency of altitudmal gradients for all sequences but also identify minimum temperature (Tmin) as the main climatical variable responsible for this pattern, to such extent that populations with extreme Tmm values are monomorphic. In addition, some sequences are correlated with humidity. These results do not only reinforce the hypothesis of a selective origin for cline maintenance but are also a new example of monomorphism associated to marginal environments. Three inversions (4AI, 7SM2, 8SM4) correlate simultaneously with altitude, latitude, and minimum temperature; two other inversions (6M and 8SM4) correlated with longitude and humidity, because this variable decreases westard in Argentina. The identification of the causes of clinal variation leads to a predictive pattern of inversion distribution for still unexplored regions. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00180661_v125_n2-3_p289_Colombo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic altitude
argentina
article
chromosome
chromosome inversion
chromosome polymorphism
environmental factor
genetic selection
natural population
natural selection
nonhuman
orthoptera
pericentric chromosome inversion
spellingShingle altitude
argentina
article
chromosome
chromosome inversion
chromosome polymorphism
environmental factor
genetic selection
natural population
natural selection
nonhuman
orthoptera
pericentric chromosome inversion
Colombo, P.C.
Confalonieri, V.A.
An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
topic_facet altitude
argentina
article
chromosome
chromosome inversion
chromosome polymorphism
environmental factor
genetic selection
natural population
natural selection
nonhuman
orthoptera
pericentric chromosome inversion
description Correlation of a trait with environmental factors is a common means of measuring natural selection in natural populations If the same correlation is seen in independent groups of populations over a wide area, selection is then a likely explanation. Natural populations of T. pallidipennis (2n = 23. X0) polymorphic for 3-7 pencentric inversions in 4 medium-sized pairs - show altitudinal clines for 9 chromosome sequences over a wide area in Argentina. Joint analysis has shown correlations with latitude and longitude. In order to identify the climatic variables responsible for this clinal variation, 7 populations sited on an altitudinal gradient were scored for inversion frequency. Multiple regression analyses among chromosome frequencies and environmental variables do not only confirm the consistency of altitudmal gradients for all sequences but also identify minimum temperature (Tmin) as the main climatical variable responsible for this pattern, to such extent that populations with extreme Tmm values are monomorphic. In addition, some sequences are correlated with humidity. These results do not only reinforce the hypothesis of a selective origin for cline maintenance but are also a new example of monomorphism associated to marginal environments. Three inversions (4AI, 7SM2, 8SM4) correlate simultaneously with altitude, latitude, and minimum temperature; two other inversions (6M and 8SM4) correlated with longitude and humidity, because this variable decreases westard in Argentina. The identification of the causes of clinal variation leads to a predictive pattern of inversion distribution for still unexplored regions.
format JOUR
author Colombo, P.C.
Confalonieri, V.A.
author_facet Colombo, P.C.
Confalonieri, V.A.
author_sort Colombo, P.C.
title An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
title_short An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
title_full An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
title_fullStr An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
title_full_unstemmed An adaptive pattern of inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Correlation with environmental variables: An overall view
title_sort adaptive pattern of inversion polymorphisms in trimerotropis pallidipennis (orthoptera): correlation with environmental variables: an overall view
url http://hdl.handle.net/20.500.12110/paper_00180661_v125_n2-3_p289_Colombo
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