Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon
The current taxonomy of most Atelopus species is based on morphological and color data only. Recent studies suggest that A. spumarius may represent a species complex assigned under the same name. Karyotypic data and description of sperm ultrastructure for 13 specimens of A. spumarius are presented h...
| Autor principal: | Siqueira, Sérgio |
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| Outros Autores: | Aguiar-Júnior, Odair, Lima, Albertina Pimental, Pimentel, Shirlei Maria Recco |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Genetics and Molecular Biology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14979 |
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oai:repositorio:1-14979 |
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oai:repositorio:1-14979 Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon Siqueira, Sérgio Aguiar-Júnior, Odair Lima, Albertina Pimental Pimentel, Shirlei Maria Recco Acrosome Animals Cell Anura Atelopus Spumarius Axoneme Cell Nucleus Centromere Chromosome Analysis Chromosome Nor Chromosome Number Chromosome Structure Cytogenetics Heterochromatin Karyotype Male Mitochondrion Nonhuman Rhinella Semen Analysis Spermatozoon Tail Telomere Ultrastructure The current taxonomy of most Atelopus species is based on morphological and color data only. Recent studies suggest that A. spumarius may represent a species complex assigned under the same name. Karyotypic data and description of sperm ultrastructure for 13 specimens of A. spumarius are presented here for the first time. A chromosomal analysis revealed 2n = 22 chromosomes, with centromeric heterochromatin in all pairs and a nucleolar organizer region (NOR) on the telomere of pair 7. The sperm was of the bufonoid type, presenting a filiform nucleus covered by an acrosomal complex and a mitochondrial collar in the neck region. The tail was composed of an axoneme, an undulating membrane and an axial rod. A karyotype analysis of A. spumarius showed the same chromosome number and similar chromosomal morphology as described for congeneric species, with slight differences probably resulting from pericentric inversions. The NOR location (on pair 7) was the same as that observed for species belonging to the genus Rhinella. The spermatological findings indicate a close relationship between Atelopus and the bufonoid lineage. The present data are useful for reference in future studies to determine whether more than one species are assigned to A. spumarius. © 2013, Sociedade Brasileira de Genética. Printed in Brazil. 2020-05-07T13:59:17Z 2020-05-07T13:59:17Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/14979 10.1590/S1415-47572013005000038 en Volume 36, Número 4, Pags. 528-532 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Genetics and Molecular Biology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Acrosome Animals Cell Anura Atelopus Spumarius Axoneme Cell Nucleus Centromere Chromosome Analysis Chromosome Nor Chromosome Number Chromosome Structure Cytogenetics Heterochromatin Karyotype Male Mitochondrion Nonhuman Rhinella Semen Analysis Spermatozoon Tail Telomere Ultrastructure |
| spellingShingle |
Acrosome Animals Cell Anura Atelopus Spumarius Axoneme Cell Nucleus Centromere Chromosome Analysis Chromosome Nor Chromosome Number Chromosome Structure Cytogenetics Heterochromatin Karyotype Male Mitochondrion Nonhuman Rhinella Semen Analysis Spermatozoon Tail Telomere Ultrastructure Siqueira, Sérgio Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| topic_facet |
Acrosome Animals Cell Anura Atelopus Spumarius Axoneme Cell Nucleus Centromere Chromosome Analysis Chromosome Nor Chromosome Number Chromosome Structure Cytogenetics Heterochromatin Karyotype Male Mitochondrion Nonhuman Rhinella Semen Analysis Spermatozoon Tail Telomere Ultrastructure |
| description |
The current taxonomy of most Atelopus species is based on morphological and color data only. Recent studies suggest that A. spumarius may represent a species complex assigned under the same name. Karyotypic data and description of sperm ultrastructure for 13 specimens of A. spumarius are presented here for the first time. A chromosomal analysis revealed 2n = 22 chromosomes, with centromeric heterochromatin in all pairs and a nucleolar organizer region (NOR) on the telomere of pair 7. The sperm was of the bufonoid type, presenting a filiform nucleus covered by an acrosomal complex and a mitochondrial collar in the neck region. The tail was composed of an axoneme, an undulating membrane and an axial rod. A karyotype analysis of A. spumarius showed the same chromosome number and similar chromosomal morphology as described for congeneric species, with slight differences probably resulting from pericentric inversions. The NOR location (on pair 7) was the same as that observed for species belonging to the genus Rhinella. The spermatological findings indicate a close relationship between Atelopus and the bufonoid lineage. The present data are useful for reference in future studies to determine whether more than one species are assigned to A. spumarius. © 2013, Sociedade Brasileira de Genética. Printed in Brazil. |
| format |
Artigo |
| author |
Siqueira, Sérgio |
| author2 |
Aguiar-Júnior, Odair Lima, Albertina Pimental Pimentel, Shirlei Maria Recco |
| author2Str |
Aguiar-Júnior, Odair Lima, Albertina Pimental Pimentel, Shirlei Maria Recco |
| title |
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| title_short |
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| title_full |
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| title_fullStr |
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| title_full_unstemmed |
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon |
| title_sort |
cytogenetics and sperm ultrastructure of atelopus spumarius (anura, bufonidae) from the brazilian amazon |
| publisher |
Genetics and Molecular Biology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/14979 |
| _version_ |
1787144881040261120 |
| score |
11.755432 |