Spermatozoa ultrastructure of two osmerid fishes in the context of their family (Teleostei: Osmeriformes: Osmeridae)
2015
Beirão, J. | Lewis, J. A. | Purchase, C. F.
Systematics of the Osmeridae remains controversial, and may benefit from detailed examination of sperm biology. Sperm morphology and ultrastructure of two osmerids were analyzed, one from Tribe Salangini (Mallotus villosus) and another from Tribe Osmerini (Osmerus mordax) to try to clarify some of the observations previously made by other authors in the context of the Osmeridae family. In both species there is a bullet‐shape head with a deep nuclear fossa where one finned flagellum is deeply inserted, and there is only one mitochondrion. A general schematic model for Osmeridae sperm is proposed that excludes the Salangini tribe but includes M. villosus. M. villosus ultrastructure is more similar to the Osmerini than the Salangini where it is currently placed.
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