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dc.contributor.author
Abreliano, Fernanda Natalia  
dc.contributor.author
Zaracho, Victor Hugo  
dc.contributor.author
Sandoval, María Teresa  
dc.date.available
2023-08-14T13:11:28Z  
dc.date.issued
2015-08  
dc.identifier.citation
Abreliano, Fernanda Natalia; Zaracho, Victor Hugo; Sandoval, María Teresa; External ontogenetic changes of larval structures in Elachistocleis bicolor (Anura: Microhylidae: Gastrophryninae); Versita; Biologia; 70; 7; 8-2015; 958-967  
dc.identifier.issn
0006-3088  
dc.identifier.uri
http://hdl.handle.net/11336/208119  
dc.description.abstract
Although the external larval morphology of many species of Microhylidae has been characterized, ontogenetic studies in the family are scarce and partial. In the present study, we describe the development of the oral funnel, external gills, external nares, operculum, spiracle, and adhesive organs of Elachistocleis bicolor with the aim to contribute to future ontogenetic, evolutionary, and phylogenetic studies. The development of E. bicolor is similar to that of other species with free-swimming tadpoles as Microhyla ornata, Dermatonotus muelleri and Uperodon globulosus. The ontogeny of the oral apparatus shows only the early stages of the pattern most common in anurans. After the invagination of the stomodeum, the anterior and posterior labia are defined, but the keratinized structures are not formed. The conical adhesive glands are similar to those of Physalaemus and Dendropsophus tadpoles, but in E. bicolor, these develop in contact with the posterior labium. The external nares remain closed during most of the larval phase. During ontogeny, the external gills are simultaneously covered by a transverse operculum fold, which later advances towards the posteromedial ventral region, forming the spiracle, while in Type IV larvae the operculum folds close from right to left, covering the right gill first. The distinct larval characters of Microhylidae appear between the last embryonic stages and the first larval stages. Therefore, the consideration of these stages can be of great value in future studies of anuran development in phylogenetic and evolutionary contexts. Ontogenetic studies in microhylid tadpoles are fundamental to identify heterochronic processes, to interpret the variability of larval structures, and to establish or reinforce hypotheses about the origin of larval structures.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Versita  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ANURANS  
dc.subject
DEVELOPMENTS  
dc.subject
SPIRACLE  
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ORAL FUNNEL  
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EXTERNAL GILLS  
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NARES  
dc.subject.classification
Biología del Desarrollo  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
External ontogenetic changes of larval structures in Elachistocleis bicolor (Anura: Microhylidae: Gastrophryninae)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-11-13T16:12:07Z  
dc.identifier.eissn
1336-9563  
dc.journal.volume
70  
dc.journal.number
7  
dc.journal.pagination
958-967  
dc.journal.pais
Polonia  
dc.journal.ciudad
Varsovia  
dc.description.fil
Fil: Abreliano, Fernanda Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio de Herpetología; Argentina  
dc.description.fil
Fil: Zaracho, Victor Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio de Herpetología; Argentina  
dc.description.fil
Fil: Sandoval, María Teresa. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio de Herpetología; Argentina  
dc.journal.title
Biologia  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1515/biolog-2015-0101  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1515/biolog-2015-0101  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/document/doi/10.1515/biolog-2015-0101/html