Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/15721
Title: Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa
Authors: Amaral, Rodrigo S.
Silva, Vera Maria Ferreira da
Valdez Domingos, Fab?ola Xochilt
Martin, Anthony Richard
Keywords: Acrosome
Adult
Axoneme
Cell Ultrastructure
Chromatin
Microscopy, Electron
Inia Geoffrensis
Male
Microscopy
Mitochondrion
Morphological Trait
Nonhuman
Priority Journal
Spermatozoon
Spermatozoon Tail
Toothed Whale
Anatomy And Histology
Animals
Cytology
Microscopy, Electron, Scanning
Spermatozoon
Toothed Whale
Ultrastructure
Animal
Dolphins
Male
Microscopy, Electron, Scanning
Spermatozoa
Issue Date: 2017
metadata.dc.publisher.journal: Anatomical Record
metadata.dc.relation.ispartof: Volume 300, Número 8, Pags. 1519-1523
Abstract: The spermatozoa from seven adult Amazon river dolphins (Inia geoffrensis, CETACEA: INIIDAE) were analyzed by light and electron microscopy. The spermatozoa showed an elongated ellipsoid shaped head and a long tail with a well distinguishable midpiece. The head spermatozoa have a smooth surface like other odontocetes examined, with the exception of the Delphinidae family. The mean dimensions of the spermatozoa were within the range already reported for other cetaceans. The spermatozoa midpiece, as in other cetaceans, showed a random pattern of mitochondria, different from that described for other mammals. Further studies of sperm morphology of a wider spectrum of cetacean families could help to better understand the reproductive biology of these animals and the intergeneric and intrageneric relationships among them, as well as, among other mammals. Anat Rec, 300:1519–1523, 2017. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.
metadata.dc.identifier.doi: 10.1002/ar.23585
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