Please use this identifier to cite or link to this item:
Type: Artigo
Title: Comparative Sperm Ultrastructure Of Twelve Leptodactylid Frog Species With Insights Into Their Phylogenetic Relationships
Author: Santos
Julio Sergio; Introini
Gisele Orlandi; Prado Veiga-Menoncello
Ana Cristina; Blasc
Ailin; Rivera
Miryan; Recco-Pimentel
Shirlei Maria
Abstract: The spermatozoa of representatives of three Neotropical frog subfamilies, Leiuperinae, Leptodactylinae and Paratelmatobiinae, were observed using Transmission Electron Microscopy, with the aim of identifying ultrastructural traits that provide insights into the phylogenetic relationships among these anurans, which are currently unclear. In the leiuperines, spermatozoa of Physalaemus albifrons, P. cicada, P. deimaticus and P. feioi were characterized by an acrosomal vesicle covering the subacrosomal cone that was not observed in the spermatozoa of Physalaemus centralis and P. cuvieri. The tail of the spermatozoa of P. albifrons, P. centralis, P. cicada, P. cuvieri, P. deimaticus, and P. feioi presented a long undulating membrane, whereas Engystomops petersi and E. freibergi, which form a sister Glade to Physalaemus, had an axial fiber, which were absent in Physalaemus. Other leiuperine, E. puyango had an abaxonemal bulb-like swelling distally to the paraxonemal rod, which were also absent in Physalaemus. These differences support the revalidation of Engystomops as a true taxon, distinct from Physalaemus. The tail of the spermatozoa of E. petersi and E. freibergi was similar to that of Paratelmatobius poecilogaster (Paratelmatobiinae). The spermatozoa of Leptodactylus natalenis (Leptodactylinae) had undulating membrane and axial fiber, in contrast with Adenomera marmorata, which lacked these structures. Morphological differences between A. marmorata and L natalensis sperm cells appeared to validate the allocation of A. marmorata into a genus distinct from Leptodactylus. Overall, dissimilarities in the spermatozoa of the leptodactylids provided an important phylogenetic signal for the understanding of their taxonomic relationships. (C) 2016 Elsevier Ltd. All rights reserved.
Subject: Anura
Sperm Structure
Editor: Pergamon-Elsevier Ltd
Citation: Micron. Pergamon-elsevier Ltd, v. 91, p. 1 - 10, 2016.
Rights: fechado
Identifier DOI: 10.1016/j.micron.2016.09.003
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000388546700001.pdf4.51 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.