Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae)
The testes of Caenogastropoda typically produce two types of spermatozoa, euspermatozoa and paraspermatozoa. The structures of both morphological forms of sperm contribute to our understanding of reproductive biology, and also have been useful to elucidate taxonomic and phylogenetic relationships am...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v123_n3_p166_Gimenez http://hdl.handle.net/20.500.12110/paper_00281344_v123_n3_p166_Gimenez |
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paper:paper_00281344_v123_n3_p166_Gimenez2025-07-30T17:36:36Z Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) Gastropoda Neaogastropoda Sperm Ultrastructure Adelomelon Caenogastropoda Gastropoda Neogastropoda Olivancillaria Olividae Volutidae The testes of Caenogastropoda typically produce two types of spermatozoa, euspermatozoa and paraspermatozoa. The structures of both morphological forms of sperm contribute to our understanding of reproductive biology, and also have been useful to elucidate taxonomic and phylogenetic relationships among gastropods. This article describes the ultrastructure and the possible importance for systematics of the euspermatozoa in two species, Adelomelon beckii, family Volutidae, and Olivancillaria deshayesiana, family Olividae. The euspermatozoa of these species are characterized by: the presence of an acrosomal vesicle with an apical bleb and accessory membrane; a nucleus that is long and tubular with the axoneme penetrating the nucleus; a midpiece with mitochondrial elements coiled helically around the axoneme; a glycogen piece; and a short end piece. A constriction in the acrosomal vesicle and mitochondrial elements that appear U-shaped and electron dense in cross section are features that are present in the studied taxa, but have not been reported outside of the Neogastropoda. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v123_n3_p166_Gimenez http://hdl.handle.net/20.500.12110/paper_00281344_v123_n3_p166_Gimenez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Gastropoda Neaogastropoda Sperm Ultrastructure Adelomelon Caenogastropoda Gastropoda Neogastropoda Olivancillaria Olividae Volutidae |
| spellingShingle |
Gastropoda Neaogastropoda Sperm Ultrastructure Adelomelon Caenogastropoda Gastropoda Neogastropoda Olivancillaria Olividae Volutidae Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| topic_facet |
Gastropoda Neaogastropoda Sperm Ultrastructure Adelomelon Caenogastropoda Gastropoda Neogastropoda Olivancillaria Olividae Volutidae |
| description |
The testes of Caenogastropoda typically produce two types of spermatozoa, euspermatozoa and paraspermatozoa. The structures of both morphological forms of sperm contribute to our understanding of reproductive biology, and also have been useful to elucidate taxonomic and phylogenetic relationships among gastropods. This article describes the ultrastructure and the possible importance for systematics of the euspermatozoa in two species, Adelomelon beckii, family Volutidae, and Olivancillaria deshayesiana, family Olividae. The euspermatozoa of these species are characterized by: the presence of an acrosomal vesicle with an apical bleb and accessory membrane; a nucleus that is long and tubular with the axoneme penetrating the nucleus; a midpiece with mitochondrial elements coiled helically around the axoneme; a glycogen piece; and a short end piece. A constriction in the acrosomal vesicle and mitochondrial elements that appear U-shaped and electron dense in cross section are features that are present in the studied taxa, but have not been reported outside of the Neogastropoda. |
| title |
Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| title_short |
Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| title_full |
Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| title_fullStr |
Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| title_full_unstemmed |
Sperm morphology of two marine neogastropods from the southwestern atlantic ocean (Caenogastropoda: Volutidae and Olividae) |
| title_sort |
sperm morphology of two marine neogastropods from the southwestern atlantic ocean (caenogastropoda: volutidae and olividae) |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v123_n3_p166_Gimenez http://hdl.handle.net/20.500.12110/paper_00281344_v123_n3_p166_Gimenez |
| _version_ |
1840320952155504640 |