Morphology of the spermatozoa of the Microhylidae (Anura, Amphibia)

Scheltinga, D. M., Jamieson, B. G. M., Bickford, D. P., Garda, A. A., Bao, S. N. and McDonald, K. R. (2002) Morphology of the spermatozoa of the Microhylidae (Anura, Amphibia). Acta Zoologica, 83 4: 263-275. doi:10.1046/j.1463-6395.2002.00066.x


Author Scheltinga, D. M.
Jamieson, B. G. M.
Bickford, D. P.
Garda, A. A.
Bao, S. N.
McDonald, K. R.
Title Morphology of the spermatozoa of the Microhylidae (Anura, Amphibia)
Journal name Acta Zoologica   Check publisher's open access policy
ISSN 0001-7299
Publication date 2002
Sub-type Article (original research)
DOI 10.1046/j.1463-6395.2002.00066.x
Volume 83
Issue 4
Start page 263
End page 275
Total pages 13
Place of publication Stockholm
Publisher The Royal Swedish Academy of Sciences
Collection year 2002
Language eng
Subject C1
270501 Animal Systematics, Taxonomy and Phylogeny
770703 Living resources (flora and fauna)
Abstract Microhylid spermatozoa show the autapomorphic condition of possessing a thin post-mitochondrial cytoplasmic collar. Their spermatozoa are apomorphic in several respects. They have lost the distinct nuclear shoulder, endonuclear canal and axial perforatorium observed in urodeles, caecilians and primitive frogs, possess a conical perforatorium and apomorphically lack any fibres associated with the axoneme. The spermatozoa of Cophixalus , however, differ in several respects from those of the other microhylids examined. Cophixalus spermatozoa are longer in almost all measurements, the acrosome vesicle is cylindrical and does not completely cover the putative perforatorium, the perforatorium is asymmetrical and composed of fine fibres, the nucleus is strongly attenuated and narrower, and the mitochondria are elongate. The absence of fibres associated with the axoneme is an apomorphic condition shared with the Ranidae, Rhacophoridae and Pipidae.
Keyword Zoology
Spermatozoa
Ultrastructure
Microhylid
Frog
Phylogeny
Reproduction
Fertilization Biology
Fine-structure
Hylid Frogs
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Tue, 14 Aug 2007, 17:27:05 EST