Ultrastructural observations of eu‐ and paraspermiogenesis in the cottid fish <i>Hemilepidotus gilberti</i> (Teleostei: Scorpaeniformes: Cottidae)

Abstract excerpt

The developmental process of eu- and paraspermatozoa in the cottid fish, Hemilepidotus gilberti, was observed by electron microscopy. Euspermatozoa of H. gilberti consist of a thin disk-like sperm head (about 3 microm in length), a short middle piece, and a long flagellum, but lack an acrosome. On the other hand, during spermiogenesis, aberrant spermatids, rich in cytoplasm and possessing binuclei, develop into...

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