I Quagio-Grassioto, MA Spadella, M de Carvalho & C Oliveira, 2005. Comparative description and discussion on spermiogenesis and spermatozoal ultrastructure in some species of Heptapteridae and Pseudopimelodidae (Teleostei: Siluriformes). Neotropical Ichthyology 3: 401â??410.
Abstract here.
Spermiogenesis in Pimelodidae
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