Karyotype analysis of three species of Corydoras (Siluriformes: Callichthyidae) from southern Brazil: rearranged karyotypes and cytotaxonomy-Reference-Cited by-同舟云学术

Karyotype analysis of three species of Corydoras (Siluriformes: Callichthyidae) from southern Brazil: rearranged karyotypes and cytotaxonomy

Published:2017 Issue:1 Volume:15 Page:
ISSN:1679-6225
Container-title:Neotropical Ichthyology
language:
Short-container-title:Neotrop. ichthyol.

Author:

Barbosa Patrícia¹,Pucci Marcela B.¹,Nogaroto Viviane²,Almeida Mara C.²,Artoni Roberto F.³,Vicari Marcelo R.²

Affiliation:

1. Universidade Federal de São Carlos, Brazil

2. Universidade Estadual de Ponta Grossa, Brazil

3. Universidade Federal de São Carlos, Brazil; Universidade Estadual de Ponta Grossa, Brazil

Abstract

ABSTRACT The genus Corydoras comprises a diversity of species with different diploid numbers. We compared cytogenetic data among Corydoras species from different rivers of the Ponta Grossa Arch region in southern Brazil. Corydoras ehrhardti and C. aff. paleatus have a similar karyotype formula and the same diploid number (2n = 44). Corydoras lacrimostigmata has a higher diploid number, with 2n = 58 chromosomes. Fluorescence in situ hybridization using 5S and 18S ribosomal DNA probes suggests that these ribosomal DNA sequences are involved in chromosomal rearrangements in these Corydoras species. 5S rDNA is a chromosomal marker that is considered to be unique to the species analyzed in this study. Signals of interstitial telomeric sites are seen in a chromosome pair of C. lacrimostigmata, suggesting chromosomal rearrangements via fusions or translocations. This study revealed that C. ehrhardti and C. aff. paleatus have exclusive chromosomal markers associated with chromosome differentiation, which we speculate to prevent genetic introgression.

Publisher

FapUNIFESP (SciELO)

Subject

Aquatic Science,Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

Link

http://www.scielo.br/pdf/ni/v15n1/1982-0224-ni-15-01-e160056.pdf

Reference31 articles.

1. Cytogenetics of two sympatric Corydoras species (Pisces, Siluriformes, Challichtyidae) of southern Brazil;Artoni RF;Braz J Biol,2006

2. Karyotype diversity and fish conservation of southern field from South Brazil;Artoni RF;Rev Fish Biol Fisheries,2009

3. Fragile sites, dysfunctional telomere and chromosome fusions: What is 5S rDNA role?;Barros AV;Gene,2017

4. Cytotaxonomic considerations on Hoplias lacerdae (Pisces, Erythrinidae);Bertollo LAC;Braz J Genet,1978

5. A new technique for obtaining mitotic chromosome spreads from fishes in the field;Blanco DR;J Fish Biol,2012

Cited by 17 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Are the chromosomal fusions that shaped the karyotype of Tetranematichthys wallacei (Siluriformes: Auchenipteridae) a shared feature among Ageneiosini species?;Neotropical Ichthyology;2024

2. Integrating morphological, molecular and cytogenetic data for F2 sea turtle hybrids diagnosis revealed balanced chromosomal sets;Journal of Evolutionary Biology;2023-11-01

3. Telomere organization and the interstitial telomeric sites involvement in insects and vertebrates chromosome evolution;Genetics and Molecular Biology;2022

4. Integrated analysis reveals a new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) in the lower Iguassu River, Brazil;Organisms Diversity & Evolution;2021-11-26

5. Paraphyly and evolutionary independent lineages in Gymnotus pantherinus (Gymnotiformes: Gymnotidae) in the Brazilian Atlantic Forest Coastal Streams;Molecular Phylogenetics and Evolution;2021-08