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Abstract:

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.

Registro:

Documento: Artículo
Título:Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient
Autor:Confalonieri, V.A.; Colombo, P.C.
Filiación:Laboratio de Genética, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte, Buenos Aires, Argentina
Palabras clave: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)
Año:1989
Volumen:62
Número:1
Página de inicio:107
Página de fin:112
DOI: http://dx.doi.org/10.1038/hdy.1989.14
Título revista:Heredity
Título revista abreviado:Heredity
ISSN:0018067X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v62_n1_p107_Confalonieri

Referencias:

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Citas:

---------- APA ----------
Confalonieri, V.A. & Colombo, P.C. (1989) . Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient. Heredity, 62(1), 107-112.
http://dx.doi.org/10.1038/hdy.1989.14
---------- CHICAGO ----------
Confalonieri, V.A., Colombo, P.C. "Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient" . Heredity 62, no. 1 (1989) : 107-112.
http://dx.doi.org/10.1038/hdy.1989.14
---------- MLA ----------
Confalonieri, V.A., Colombo, P.C. "Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient" . Heredity, vol. 62, no. 1, 1989, pp. 107-112.
http://dx.doi.org/10.1038/hdy.1989.14
---------- VANCOUVER ----------
Confalonieri, V.A., Colombo, P.C. Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): Clinal variation along an altitudinal gradient. Heredity. 1989;62(1):107-112.
http://dx.doi.org/10.1038/hdy.1989.14