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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...

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Autores principales: Siqueira, Sérgio, Junior, Odair Aguiar, Lima, Albertina Pimentel, Recco-Pimentel, Shirlei Maria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Genética 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873184/
https://www.ncbi.nlm.nih.gov/pubmed/24385856
http://dx.doi.org/10.1590/S1415-47572013005000038
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author Siqueira, Sérgio
Junior, Odair Aguiar
Lima, Albertina Pimentel
Recco-Pimentel, Shirlei Maria
author_facet Siqueira, Sérgio
Junior, Odair Aguiar
Lima, Albertina Pimentel
Recco-Pimentel, Shirlei Maria
author_sort Siqueira, Sérgio
collection PubMed
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.
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spelling pubmed-38731842014-01-02 Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon Siqueira, Sérgio Junior, Odair Aguiar Lima, Albertina Pimentel Recco-Pimentel, Shirlei Maria Genet Mol Biol Animal Genetics 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. Sociedade Brasileira de Genética 2013-12 2013-09-03 /pmc/articles/PMC3873184/ /pubmed/24385856 http://dx.doi.org/10.1590/S1415-47572013005000038 Text en Copyright © 2013, Sociedade Brasileira de Genética. License information: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Animal Genetics
Siqueira, Sérgio
Junior, Odair Aguiar
Lima, Albertina Pimentel
Recco-Pimentel, Shirlei Maria
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon
title 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_short 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
topic Animal Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873184/
https://www.ncbi.nlm.nih.gov/pubmed/24385856
http://dx.doi.org/10.1590/S1415-47572013005000038
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