Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa

Rodrigo S. Amaral; Vera M. F. da Silva; Fabíola X. Valdez Domingos; Anthony R. Martin

doi:10.1002/ar.23585

Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa

Rodrigo S. Amaral (Lead / Corresponding author), Vera M. F. da Silva, Fabíola X. Valdez Domingos, Anthony R. Martin

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3 Citations (Scopus)

222 Downloads (Pure)

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 inter- and intra-generic relationships among them, as well as, among other mammals. This article is protected by copyright. All rights reserved.

Original language	English
Pages (from-to)	1519-1523
Number of pages	5
Journal	Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Volume	300
Issue number	8
Early online date	3 Mar 2017
DOIs	https://doi.org/10.1002/ar.23585
Publication status	Published - Aug 2017

Keywords

Amazon river dolphin
Cetacean
Inia geoffrensis
Reproduction
Sperm

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10.1002/ar.23585

Author Accepted ManuscriptAccepted author manuscript, 3.52 MB

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@article{4e9894d1ae4b45c3aec1b17dbf9d1879,

title = "Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa",

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 inter- and intra-generic relationships among them, as well as, among other mammals. This article is protected by copyright. All rights reserved.",

keywords = "Amazon river dolphin , Cetacean , Inia geoffrensis, Reproduction, Sperm",

author = "Amaral, {Rodrigo S.} and {da Silva}, {Vera M. F.} and {Valdez Domingos}, {Fab{\'i}ola X.} and Martin, {Anthony R.}",

note = "This study was part of Projeto Boto, a research project set up under a cooperative agreement between the National Amazon Research Institute – INPA/MCTI and the Mamirau{\'a} Sustainable Development Institute – IDSM-OS/ MCTI. We thank the Laborat{\'o}rio Tem{\'a}tico de Microscopia {\'O}ptica e Eletr{\^o}nica – LMTOE/INPA staff for their assistance in the sample analysis, and Petrobras Socioambiental (Projeto Mam{\'i}feros Aqu{\'a}ticos da Amaz{\^o}nia: Conserva{\c c}{\~a}o e Pesquisa) and Associa{\c c}{\~a}o Amigos do Peixe-boi (AMPA) for their financial support. This scientific paper was developed with Amazonas government support through the Funda{\c c}{\~a}o de Amparo {\`a} Pesquisa do Estado do Amazonas (PAPAC 020/2013 – Process no 062.00888/2014). ",

year = "2017",

month = aug,

doi = "10.1002/ar.23585",

language = "English",

volume = "300",

pages = "1519--1523",

journal = "Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology",

issn = "1932-8486",

publisher = "Wiley",

number = "8",

}

Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa. / Amaral, Rodrigo S. (Lead / Corresponding author); da Silva, Vera M. F.; Valdez Domingos, Fabíola X. et al.
In: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology, Vol. 300, No. 8, 08.2017, p. 1519-1523.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa

AU - Amaral, Rodrigo S.

AU - da Silva, Vera M. F.

AU - Valdez Domingos, Fabíola X.

AU - Martin, Anthony R.

N1 - This study was part of Projeto Boto, a research project set up under a cooperative agreement between the National Amazon Research Institute – INPA/MCTI and the Mamirauá Sustainable Development Institute – IDSM-OS/ MCTI. We thank the Laboratório Temático de Microscopia Óptica e Eletrônica – LMTOE/INPA staff for their assistance in the sample analysis, and Petrobras Socioambiental (Projeto Mamíferos Aquáticos da Amazônia: Conservação e Pesquisa) and Associação Amigos do Peixe-boi (AMPA) for their financial support. This scientific paper was developed with Amazonas government support through the Fundação de Amparo à Pesquisa do Estado do Amazonas (PAPAC 020/2013 – Process no 062.00888/2014).

PY - 2017/8

Y1 - 2017/8

N2 - 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 inter- and intra-generic relationships among them, as well as, among other mammals. This article is protected by copyright. All rights reserved.

AB - 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 inter- and intra-generic relationships among them, as well as, among other mammals. This article is protected by copyright. All rights reserved.

KW - Amazon river dolphin

KW - Cetacean

KW - Inia geoffrensis

KW - Reproduction

KW - Sperm

U2 - 10.1002/ar.23585

DO - 10.1002/ar.23585

M3 - Article

C2 - 28257606

SN - 1932-8486

VL - 300

SP - 1519

EP - 1523

JO - Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology

JF - Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology

IS - 8

ER -

Morphology and Ultrastructure of the Amazon River Dolphin (Inia geoffrensis) Spermatozoa

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Keywords

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