Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient

Six populations of Trimerotropis pallidipennis located along an altitudinal gradient in the Antinaco-Los Coiorados valley (La Rioja, Argentina), were cytoiogicaliy analysed. The male karyotype consists of 23 chromosomes (22 + XO) with three long pairs submetacentric, the X-chromosome metacentric and...

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Detalles Bibliográficos
Autores principales:	Confalonieri, Viviana Andrea, Colombo, Pablo Cesar
Publicado:	1989
Materias:	altitude animal article chromosome chromosome inversion climate genetic polymorphism genetic variability genetics karyotyping male metaphase Orthoptera ultrastructure Altitude Animals Chromosomes Climate Inversion, Chromosome Karyotyping Male Metaphase Polymorphism, Genetic Variation (Genetics)
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v62_n1_p107_Confalonieri http://hdl.handle.net/20.500.12110/paper_0018067X_v62_n1_p107_Confalonieri
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0018067X_v62_n1_p107_Confalonieri
record_format	dspace
spelling	paper:paper_0018067X_v62_n1_p107_Confalonieri2023-06-08T14:39:19Z Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient Confalonieri, Viviana Andrea Colombo, Pablo Cesar altitude animal article chromosome chromosome inversion climate genetic polymorphism genetic variability genetics karyotyping male metaphase Orthoptera ultrastructure Altitude Animals Chromosomes Climate Inversion, Chromosome Karyotyping Male Metaphase Orthoptera Polymorphism, Genetic Variation (Genetics) Six populations of Trimerotropis pallidipennis located along an altitudinal gradient in the Antinaco-Los Coiorados valley (La Rioja, Argentina), were cytoiogicaliy analysed. The male karyotype consists of 23 chromosomes (22 + XO) with three long pairs submetacentric, the X-chromosome metacentric and the remaining ones basically acrocentric. Populations from La Rioja were polymorphic for seven pericentric inversions. Correlations between chromosome frequencies and altitude were statistically tested. In most cases, variables were either positively or negatively related in a significant fashion. As a consequence, mean populational heterozygosis (measured as the mean number of heteromorphic bivalents per individual per population) was also positively correlated with altitude. These results suggest that altitude (or other correlated environmental variable) may exert a differential selective pressure on coadapted gene blocks in the mutually inverted sequences. The possible relation of these results with the central-marginal model is discussed. © 1989, The Genetical Society of Great Britain. Fil:Confalonieri, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Colombo, P.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1989 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v62_n1_p107_Confalonieri http://hdl.handle.net/20.500.12110/paper_0018067X_v62_n1_p107_Confalonieri
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 animal article chromosome chromosome inversion climate genetic polymorphism genetic variability genetics karyotyping male metaphase Orthoptera ultrastructure Altitude Animals Chromosomes Climate Inversion, Chromosome Karyotyping Male Metaphase Orthoptera Polymorphism, Genetic Variation (Genetics)
spellingShingle	altitude animal article chromosome chromosome inversion climate genetic polymorphism genetic variability genetics karyotyping male metaphase Orthoptera ultrastructure Altitude Animals Chromosomes Climate Inversion, Chromosome Karyotyping Male Metaphase Orthoptera Polymorphism, Genetic Variation (Genetics) Confalonieri, Viviana Andrea Colombo, Pablo Cesar Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
topic_facet	altitude animal article chromosome chromosome inversion climate genetic polymorphism genetic variability genetics karyotyping male metaphase Orthoptera ultrastructure Altitude Animals Chromosomes Climate Inversion, Chromosome Karyotyping Male Metaphase Orthoptera Polymorphism, Genetic Variation (Genetics)
description	Six populations of Trimerotropis pallidipennis located along an altitudinal gradient in the Antinaco-Los Coiorados valley (La Rioja, Argentina), were cytoiogicaliy analysed. The male karyotype consists of 23 chromosomes (22 + XO) with three long pairs submetacentric, the X-chromosome metacentric and the remaining ones basically acrocentric. Populations from La Rioja were polymorphic for seven pericentric inversions. Correlations between chromosome frequencies and altitude were statistically tested. In most cases, variables were either positively or negatively related in a significant fashion. As a consequence, mean populational heterozygosis (measured as the mean number of heteromorphic bivalents per individual per population) was also positively correlated with altitude. These results suggest that altitude (or other correlated environmental variable) may exert a differential selective pressure on coadapted gene blocks in the mutually inverted sequences. The possible relation of these results with the central-marginal model is discussed. © 1989, The Genetical Society of Great Britain.
author	Confalonieri, Viviana Andrea Colombo, Pablo Cesar
author_facet	Confalonieri, Viviana Andrea Colombo, Pablo Cesar
author_sort	Confalonieri, Viviana Andrea
title	Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
title_short	Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
title_full	Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
title_fullStr	Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
title_full_unstemmed	Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
title_sort	inversion polymorphisms in trimerotropis pallidipennis (orthoptera): clinal variation along an altitudinal gradient
publishDate	1989
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v62_n1_p107_Confalonieri http://hdl.handle.net/20.500.12110/paper_0018067X_v62_n1_p107_Confalonieri
work_keys_str_mv	AT confalonierivivianaandrea inversionpolymorphismsintrimerotropispallidipennisorthopteraclinalvariationalonganaltitudinalgradient AT colombopablocesar inversionpolymorphismsintrimerotropispallidipennisorthopteraclinalvariationalonganaltitudinalgradient
_version_	1768545815916183552

Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient

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