The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina

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Previous works in a colonized and an original population of Drosophila buzzatii have shown a consistent relationship between the inversion polymorphism and thorax length, a measure of body size. However, the populations studied in those reports share a close genealogical relationship as suggested by...

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Detalles Bibliográficos
Autores principales: Fanara, J.J., Hasson, E., Rodríguez, C.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 1997
Materias:
argentina
article
body size
chromosome inversion
chromosome polymorphism
drosophila
gene order
genealogy
host
karyotype
natural population
nonhuman
plant
population genetics
thorax
Animals
Argentina
Body Constitution
Drosophila
Inversion, Chromosome
Polymorphism, Genetic
Drosophila buzzatii
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00180661_v126_n3_p233_Fanara
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_00180661_v126_n3_p233_Fanara
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spelling paperaa:paper_00180661_v126_n3_p233_Fanara2023-06-12T16:42:01Z The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina HEREDITAS 1997;126(3):233-237 Fanara, J.J. Hasson, E. Rodríguez, C. argentina article body size chromosome inversion chromosome polymorphism drosophila gene order genealogy host karyotype natural population nonhuman plant population genetics thorax Animals Argentina Body Constitution Drosophila Inversion, Chromosome Polymorphism, Genetic Drosophila buzzatii Previous works in a colonized and an original population of Drosophila buzzatii have shown a consistent relationship between the inversion polymorphism and thorax length, a measure of body size. However, the populations studied in those reports share a close genealogical relationship as suggested by several lines of evidence. In the present paper, we revisit this issue by analysing the correlation between second chromosome arrangements and thorax length in two Argentinian natural populations (Termas de Rio Hondo and Arroyo Escobar) from different biogeographic areas with different host plants. Our findings are: (1) inversion frequencies were significantly different between populations; (2) the mean thorax length of flies collected in both populations was not significantly different; and (3) we obtain confirming evidence that flies carrying 2st, the ancestral gene order, have on average a smaller body size than those carrying the derived arrangements (2j and 2jz3). These results suggest that the biometrical effect of inversions on body size previously described are due to genetic differences between arrangements and not to the close historical relationship between the populations studied in previous reports. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodríguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1997 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00180661_v126_n3_p233_Fanara
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic argentina
article
body size
chromosome inversion
chromosome polymorphism
drosophila
gene order
genealogy
host
karyotype
natural population
nonhuman
plant
population genetics
thorax
Animals
Argentina
Body Constitution
Drosophila
Inversion, Chromosome
Polymorphism, Genetic
Drosophila buzzatii
spellingShingle argentina
article
body size
chromosome inversion
chromosome polymorphism
drosophila
gene order
genealogy
host
karyotype
natural population
nonhuman
plant
population genetics
thorax
Animals
Argentina
Body Constitution
Drosophila
Inversion, Chromosome
Polymorphism, Genetic
Drosophila buzzatii
Fanara, J.J.
Hasson, E.
Rodríguez, C.
The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
topic_facet argentina
article
body size
chromosome inversion
chromosome polymorphism
drosophila
gene order
genealogy
host
karyotype
natural population
nonhuman
plant
population genetics
thorax
Animals
Argentina
Body Constitution
Drosophila
Inversion, Chromosome
Polymorphism, Genetic
Drosophila buzzatii
description Previous works in a colonized and an original population of Drosophila buzzatii have shown a consistent relationship between the inversion polymorphism and thorax length, a measure of body size. However, the populations studied in those reports share a close genealogical relationship as suggested by several lines of evidence. In the present paper, we revisit this issue by analysing the correlation between second chromosome arrangements and thorax length in two Argentinian natural populations (Termas de Rio Hondo and Arroyo Escobar) from different biogeographic areas with different host plants. Our findings are: (1) inversion frequencies were significantly different between populations; (2) the mean thorax length of flies collected in both populations was not significantly different; and (3) we obtain confirming evidence that flies carrying 2st, the ancestral gene order, have on average a smaller body size than those carrying the derived arrangements (2j and 2jz3). These results suggest that the biometrical effect of inversions on body size previously described are due to genetic differences between arrangements and not to the close historical relationship between the populations studied in previous reports.
format Artículo
Artículo
publishedVersion
author Fanara, J.J.
Hasson, E.
Rodríguez, C.
author_facet Fanara, J.J.
Hasson, E.
Rodríguez, C.
author_sort Fanara, J.J.
title The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
title_short The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
title_full The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
title_fullStr The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
title_full_unstemmed The effect of polymorphic inversions on body size in two natural populations of Drosophila buzzatii from Argentina
title_sort effect of polymorphic inversions on body size in two natural populations of drosophila buzzatii from argentina
publishDate 1997
url http://hdl.handle.net/20.500.12110/paper_00180661_v126_n3_p233_Fanara
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