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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A simplified table for staging embryos of the pipid frog Pipa arrabali

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Araujo, Olivia G. S. ; Haddad, Celio F. B. ; da Silva, Helio R. ; Pugener, Lourdes A.
Total Authors: 4
Document type: Journal article
Source: Anais da Academia Brasileira de Ciências; v. 88, n. 3, S, p. 1875-1887, NOV 2016.
Web of Science Citations: 1

Pipa is a Neotropical genus of frogs that dwell in freshwater environments. It includes four species that lack free-swimming larvae (P. aspera, P. arrabali, P. pipa, and P. snethlageae) and three with tadpoles (P. carvalhoi, P. myersi, and P. parva). Developmental tables such as the one proposed by Nieuwkoop and Faber might be useful for Pipa species with tadpoles. However, for the other Pipa species, to determine stages by this table or by any of the tables already prepared for frogs without tadpoles (e.g., Crinia nimbus, Eleutherodactylus coqui, and Oreobates barituensis) is impossible. By using embryonic, juvenile, and subadult specimens, we generated a staging table for P. arrabali, from the moment limb buds were first observed until birth, based on diagnostic features such as snout-vent length; growth, morphology, and reabsorption of the external tail; growth and differentiation of fore and hind limbs; development of intestine and vent tube; position of the angle of the mouth relative to nostrils and eyes; and color of preserved individuals. Based on these observations, we discuss some noteworthy traits (e.g., posture of hands and feet). We also compare the pattern of development of P. arrabali with that of other anuran species (with and without tadpoles). (AU)

FAPESP's process: 12/04443-1 - Xenoanura phylogenetic analysis based on molecular and morphological data with emphasis on the species of the neotropical family Pipidae (Amphibia: Anura)
Grantee:Olivia Gabriela dos Santos Araújo
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 13/50741-7 - Diversity and conservation of Brazilian amphibians
Grantee:Célio Fernando Baptista Haddad
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 08/50928-1 - Speciation of frogs in high-altitude environments
Grantee:Célio Fernando Baptista Haddad
Support Opportunities: Research Projects - Thematic Grants