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Euspermatozoa and paraspermatozoa in the volutid gastropod Odontocymbiola magellanica, Patagonia, Argentina, Southwestern Atlantic Ocean
(Wiley Blackwell Publishing, Inc, 2011-10)
The ultrastructure of mature spermatozoa and paraspermatozoa of Odontocymbiola magellanica is investigated. Euspermatozoa consist of: (1) a tall, conical acrosomal vesicle (with a short basal invagination, constricted ...
Sperm morphology of two marine neogastropods from the southwestern Atlantic Ocean (Caenogastropoda: Volutidae and Olividae)
(Bailey-Matthews Shell Museum, 2009-10)
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 ...
Spermermatogenesis and Sperm morphology in Trophon geversianus (Gastropoda: Muricidae)
(Cambridge University Press, 2013-06)
The ultrastructure of spermatogenesis, the euspermatozoa and paraspermatozoa, is investigated in Trophon geversianus. Spermatogenesis follows the general developmental pattern of caenogastropods. Paraspermatid development ...
Sperm morphology of two species of Olivancillaria (Gastropoda: Olividae) from the south-western Atlantic
(Cambridge University Press, 2012-10-16)
Sperm ultrastructure in two species of the marine snail family Olividae is examined. Euspermatozoa of both species are com- posed of a conical, membrane-bound acrosomal vesicle; an axial rod and a basal plate similar in ...
Microscopic Anatomy of the Male Reproductive System in Echinolittorina peruviana (Mollusca: Caenogastropoda)
(Sociedad Chilena de Anatomía, 2008)