Male reproductive system in the Italian newt Lissotriton italicus (Peracca 1898) (Amphibia, Urodela): ultrastructural and morphological study with description of spermiogenesis, spermatozoon and spermatophore

Sperone, E, Bonacci, A, Brunelli, E, Tripepi, S and Jamieson, BGM (2009) Male reproductive system in the Italian newt Lissotriton italicus (Peracca 1898) (Amphibia, Urodela): ultrastructural and morphological study with description of spermiogenesis, spermatozoon and spermatophore. ZOOMORPHOLOGY, 128 2: 183-195. doi:10.1007/s00435-009-0087-7


Author Sperone, E
Bonacci, A
Brunelli, E
Tripepi, S
Jamieson, BGM
Title Male reproductive system in the Italian newt Lissotriton italicus (Peracca 1898) (Amphibia, Urodela): ultrastructural and morphological study with description of spermiogenesis, spermatozoon and spermatophore
Journal name ZOOMORPHOLOGY   Check publisher's open access policy
ISSN 0720-213X
Publication date 2009-04
Year available 2009
Sub-type Article (original research)
DOI 10.1007/s00435-009-0087-7
Volume 128
Issue 2
Start page 183
End page 195
Total pages 13
Editor Thomas Bartolomaeus
Place of publication Germany
Publisher Springer
Collection year 2010
Language eng
Subject C1
970106 Expanding Knowledge in the Biological Sciences
0606 Physiology
Abstract The first morphological and ultrastructural description of testis, Wolffian duct, spermatophore, and spermatozoon of Lissotriton italicus is provided. The male reproductive system of this species consists of a pair of monolobed testes, fat bodies, efferent ductules, paired Wolffian duct, and the cloaca. The Wolffian duct is pseudostratified, consisting of an epithelium composed of an alternation of ciliated cells and non-ciliated secretory cells, with scattered basal cells. Melanocytes are found in the basal lamina of the Wolffian duct. Spermiogenesis is of the discontinuous type. In the early spermatid nuclear elongation, flagellar extrusion and development of a large acrosomal vesicle occur. Soon the perforatorium develops and the flagellum elongates. In the late spermatid gradual chromatin condensation and nuclear elongation is noticeable. At the end of spermiogenesis the flagellum develops marginal filament and undulating membrane. The mature sperm of L. italicus consists of a distinct head (acrosome, perforatorium, nucleus and nuclear ridge, plus the apical acrosomal barb) and a tail with axoneme, undulating membrane, and axial fiber. Nuclear ridge and apical acrosomal barb are two autapomorphic characters found in the Urodela. Several apomorphic characters for Salamandroidea are also present: elongation of the connecting piece, an apically modified acrosome vesicle, trifoliate axial fiber within the principal piece, elongate annulus, elongate midpiece, and the gentle merging of the axial fiber/principal piece into the endpiece. The spermatophore of L. italicus is formed by a cap consisting of randomly distributed spermatozoa surmounting a short pedicel. A membranelike structure involving the spermatophore is absent.
Keyword Spermiogenesis
Sperm morphology
Wolffian duct -
Spermatophore -
Amphibia
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Thu, 03 Sep 2009, 08:19:25 EST by Mr Andrew Martlew on behalf of School of Biological Sciences