The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length

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We demonstrate a genetic correlation between rearrangements of the second chromosome of D. buzzatii and thorax length, as a measure of body size. The results indicate that 2j and 2jz.3 arrangements are correlated with large size, whereas 2st arrangement is correlated with small size. Someinversions...

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Detalles Bibliográficos
Autores principales: Hasson, Esteban Ruben, Fanara, Juan Jose, Rodríguez, Constantina, Vilardi, Juan Cesar
Publicado: 1992
Materias:
Body size
Chromosomal inversions
Drosophila buzzatii
Fitness
Life-history traits
Selection
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v68_n6_p557_Hasson
http://hdl.handle.net/20.500.12110/paper_0018067X_v68_n6_p557_Hasson
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0018067X_v68_n6_p557_Hasson
record_format dspace
spelling paper:paper_0018067X_v68_n6_p557_Hasson2023-06-08T14:39:21Z The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length Hasson, Esteban Ruben Fanara, Juan Jose Rodríguez, Constantina Vilardi, Juan Cesar Body size Chromosomal inversions Drosophila buzzatii Fitness Life-history traits Selection We demonstrate a genetic correlation between rearrangements of the second chromosome of D. buzzatii and thorax length, as a measure of body size. The results indicate that 2j and 2jz.3 arrangements are correlated with large size, whereas 2st arrangement is correlated with small size. Someinversions (1st and 2jz3) show dominant effects and others (2j/Jz3) exhibit overdominance. Theseresults show that at least 25 per cent of body size variation may be accounted for by the studiedkaryotypes. The possible integration of the genotypic, phenotypic and fitness levels, and also thepossible implications to life-history evolution theories, are discussed. These results suggest that, under moderate to high heritability values, some kinds of chromosomal endocyclic and/orbalancing selection may be valuable mechanisms for maintenance of body size variation. © 1992 The Genetical Society of Great Britain. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1992 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v68_n6_p557_Hasson http://hdl.handle.net/20.500.12110/paper_0018067X_v68_n6_p557_Hasson
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Body size
Chromosomal inversions
Drosophila buzzatii
Fitness
Life-history traits
Selection
spellingShingle Body size
Chromosomal inversions
Drosophila buzzatii
Fitness
Life-history traits
Selection
Hasson, Esteban Ruben
Fanara, Juan Jose
Rodríguez, Constantina
Vilardi, Juan Cesar
The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
topic_facet Body size
Chromosomal inversions
Drosophila buzzatii
Fitness
Life-history traits
Selection
description We demonstrate a genetic correlation between rearrangements of the second chromosome of D. buzzatii and thorax length, as a measure of body size. The results indicate that 2j and 2jz.3 arrangements are correlated with large size, whereas 2st arrangement is correlated with small size. Someinversions (1st and 2jz3) show dominant effects and others (2j/Jz3) exhibit overdominance. Theseresults show that at least 25 per cent of body size variation may be accounted for by the studiedkaryotypes. The possible integration of the genotypic, phenotypic and fitness levels, and also thepossible implications to life-history evolution theories, are discussed. These results suggest that, under moderate to high heritability values, some kinds of chromosomal endocyclic and/orbalancing selection may be valuable mechanisms for maintenance of body size variation. © 1992 The Genetical Society of Great Britain.
author Hasson, Esteban Ruben
Fanara, Juan Jose
Rodríguez, Constantina
Vilardi, Juan Cesar
author_facet Hasson, Esteban Ruben
Fanara, Juan Jose
Rodríguez, Constantina
Vilardi, Juan Cesar
author_sort Hasson, Esteban Ruben
title The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
title_short The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
title_full The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
title_fullStr The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
title_full_unstemmed The evolutionary history of drosophila buzzatii. Xxiv. second chromosomeinversions have different average effects on thorax length
title_sort evolutionary history of drosophila buzzatii. xxiv. second chromosomeinversions have different average effects on thorax length
publishDate 1992
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v68_n6_p557_Hasson
http://hdl.handle.net/20.500.12110/paper_0018067X_v68_n6_p557_Hasson
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