Comparative chromosomal analysis and phylogeny in four Ctenomys species (Rodentia, Octodontidae)

L. Garcia; M. Ponsà; J. Egozcue; M. Garcia

doi:https://doi.org/10.1006/bijl.1999.0314

Comparative chromosomal analysis and phylogeny in four Ctenomys species (Rodentia, Octodontidae)

L. Garcia, M. Ponsà, J. Egozcue, M. Garcia

Department of Cellular Biology, Physiology and Immunology

Research output: Contribution to journal › Article › Research › peer-review

20 Citations (Scopus)

Abstract

A cytogenetic chromosome study was carried out on specimens of four species of Ctenomys-C. talarum, C. rionegrensis, C. pearsoni and C. dorbignyi-from 10 different populations. The analysis of chromosomes was performed through sequential uniform stain, G and C-banding, and with restriction enzymes. The results obtained are discussed in relation to phylogeny. Chromosome evolution in the species studied suggests that the chromosome number has increased due to fissions, and that a reduction of the amount of constitutive heterochromatin has occurred. Different types of heterochromatin, with different patterns, have been added in parallel during evolution. Some taxonomic suggestions can be deduced from this cytogenetic study. (C) 2000 The Linnean Society of London.

Original language	English
Pages (from-to)	103-120
Journal	Biological Journal of the Linnean Society
Volume	69
DOIs	https://doi.org/10.1006/bijl.1999.0314
Publication status	Published - 1 Jan 2000

Keywords

Banding patterns
Cytogenetics
Heterochromatin
Taxonomy

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title = "Comparative chromosomal analysis and phylogeny in four Ctenomys species (Rodentia, Octodontidae)",

abstract = "A cytogenetic chromosome study was carried out on specimens of four species of Ctenomys-C. talarum, C. rionegrensis, C. pearsoni and C. dorbignyi-from 10 different populations. The analysis of chromosomes was performed through sequential uniform stain, G and C-banding, and with restriction enzymes. The results obtained are discussed in relation to phylogeny. Chromosome evolution in the species studied suggests that the chromosome number has increased due to fissions, and that a reduction of the amount of constitutive heterochromatin has occurred. Different types of heterochromatin, with different patterns, have been added in parallel during evolution. Some taxonomic suggestions can be deduced from this cytogenetic study. (C) 2000 The Linnean Society of London.",

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T1 - Comparative chromosomal analysis and phylogeny in four Ctenomys species (Rodentia, Octodontidae)

AU - Garcia, L.

AU - Ponsà, M.

AU - Egozcue, J.

AU - Garcia, M.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - A cytogenetic chromosome study was carried out on specimens of four species of Ctenomys-C. talarum, C. rionegrensis, C. pearsoni and C. dorbignyi-from 10 different populations. The analysis of chromosomes was performed through sequential uniform stain, G and C-banding, and with restriction enzymes. The results obtained are discussed in relation to phylogeny. Chromosome evolution in the species studied suggests that the chromosome number has increased due to fissions, and that a reduction of the amount of constitutive heterochromatin has occurred. Different types of heterochromatin, with different patterns, have been added in parallel during evolution. Some taxonomic suggestions can be deduced from this cytogenetic study. (C) 2000 The Linnean Society of London.

AB - A cytogenetic chromosome study was carried out on specimens of four species of Ctenomys-C. talarum, C. rionegrensis, C. pearsoni and C. dorbignyi-from 10 different populations. The analysis of chromosomes was performed through sequential uniform stain, G and C-banding, and with restriction enzymes. The results obtained are discussed in relation to phylogeny. Chromosome evolution in the species studied suggests that the chromosome number has increased due to fissions, and that a reduction of the amount of constitutive heterochromatin has occurred. Different types of heterochromatin, with different patterns, have been added in parallel during evolution. Some taxonomic suggestions can be deduced from this cytogenetic study. (C) 2000 The Linnean Society of London.

KW - Banding patterns

KW - Cytogenetics

KW - Heterochromatin

KW - Taxonomy

U2 - https://doi.org/10.1006/bijl.1999.0314

DO - https://doi.org/10.1006/bijl.1999.0314

M3 - Article

VL - 69

SP - 103

EP - 120

ER -

Comparative chromosomal analysis and phylogeny in four Ctenomys species (Rodentia, Octodontidae)

Abstract

Keywords

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