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Bruschi DP, Sousa DY, Soares A, de Carvalho KA, Busin CS, Ficanha NC, Lima AP, Andrade GV, Recco-Pimentel SM. Comparative cytogenetics of nine populations of the Rhinella genus (Anura, Bufonidae) with a highlight on their conservative karyotype. Genet Mol Biol 2019; 42:445-451. [PMID: 31259364 PMCID: PMC6726150 DOI: 10.1590/1678-4685-gmb-2018-0139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
The genus Rhinella is one of the most diverse groups of bufonid toads, currently composed by 93 valid species and naturally distributed throughout different Neotropical ecoregions. Here, we analyze nine Brazilian populations of toads representing species of the Rhinella margaritifera and Rhinella marina groups. These new data include the first description of the R. hoogmoedi and R. proboscidae karyotypes, as well as other taxonomically unresolved forms. Chromosomal analysis of the populations revealed pronounced chromosomal uniformity (2n=22), including the diploid number and chromosomal morphology. Three different NOR-bearing chromosomes were identified: in the subterminal region of pair 10q in R. hoogmoedi, Rhinella sp. 1 and Rhinella sp. 2, in subterminal region of 7p in R. proboscidae and Rhinella cf. margaritifera while in R. henseli and R. icterica was detected in interstitial region of 7p. Karyotypic uniformity of the genus permits the inference of interspecific chromosome homologies and evolutionary changes in the NOR-bearing chromosome may represent an informative character in species group level. The review of the cytogenetic data of the Rhinella species together with the new karyotypes reported here contributes to the understanding of the chromosomal evolution of these toads, which karyotypes are highly conserved despite the ample distribution of many forms.
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Affiliation(s)
- Daniel Pacheco Bruschi
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de
Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP,
Brazil
| | - Deborah Yasmim Sousa
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Amanda Soares
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Klélia Aparecida de Carvalho
- Departamento de Genética e Evolução, Microbiologia e
Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP),
Campinas, SP, Brazil
| | - Carmen Sílvia Busin
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em
Ciências Ambientais (PPGCiAmb), Universidade de Passo Fundo (UPF), Passo Fundo,
RS, Brazil
| | - Natália Cristine Ficanha
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em
Ciências Ambientais (PPGCiAmb), Universidade de Passo Fundo (UPF), Passo Fundo,
RS, Brazil
| | | | - Gilda Vasconcellos Andrade
- Departamento de Biologia, Centro de Ciências Biológicas e da
Saúde, Universidade Federal do Maranhão (UFMA), São Luís, MA, Brazil
| | - Shirlei Maria Recco-Pimentel
- Departamento de Biologia Estrutural e Funcional, Instituto de
Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP,
Brazil
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