Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa
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...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Institución: | Instituto Nacional de Pesquisas da Amazônia (INPA) |
| Repositorio: | Repositório Institucional do INPA |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio:1/15721 |
| Acceso en línea: | https://repositorio.inpa.gov.br/handle/1/15721 |
| Access Level: | acceso abierto |
| Palabra clave: | 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 Ultrastructure Animal Dolphins Spermatozoa |
| Sumario: | 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. |
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