A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)

The aim of this study was to describe and illustrate the morphology of the spermatozoon of the Western Atlantic shrimp, Hippolyte obliquimanus. Individuals were sampled from Itagua Beach (Ubatuba, southern Brazil). The male reproductive system was dissected and morphological analysis was undertaken...

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Detalles Bibliográficos
Publicado: 2012
Materias:
Acrosomal spike
Morphology
Nuclear arms
Spermatozoa
Caridea
Cnidaria
Decapoda (Crustacea)
Hippolyte obliquimanus
Hippolytidae
Rhynchocinetes
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07924259_v56_n4_p299_Terossi
http://hdl.handle.net/20.500.12110/paper_07924259_v56_n4_p299_Terossi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07924259_v56_n4_p299_Terossi
record_format dspace
spelling paper:paper_07924259_v56_n4_p299_Terossi2023-06-08T15:45:59Z A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae) Acrosomal spike Morphology Nuclear arms Spermatozoa Caridea Cnidaria Decapoda (Crustacea) Hippolyte obliquimanus Hippolytidae Rhynchocinetes The aim of this study was to describe and illustrate the morphology of the spermatozoon of the Western Atlantic shrimp, Hippolyte obliquimanus. Individuals were sampled from Itagua Beach (Ubatuba, southern Brazil). The male reproductive system was dissected and morphological analysis was undertaken using a stereomicroscope, a light microscope, and transmission electron and scanning electron microscopes. When viewed from the nuclear or acrosomal poles, each spermatozoon has many translucent radiating arms (about 20) from a denser cell body, while laterally the cell body and arms resemble a ''cnidarian medusa'', with all the arms projecting away from the bell-like cell body. This sperm morphology is distinct from the ''thumbtack''-shaped spermatozoa observed in the majority of carideans but has similarities to the spermatozoa of Rhynchocinetes spp. The morphology of sperm of several species of the genus Hippolyte resembles the spermatozoon of H. obliquimanus with the presence of posterior nuclear arms, but it is necessary to study other Hippolyte species to place these arms in the context of the genus. © 2012 Taylor & Francis. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07924259_v56_n4_p299_Terossi http://hdl.handle.net/20.500.12110/paper_07924259_v56_n4_p299_Terossi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Acrosomal spike
Morphology
Nuclear arms
Spermatozoa
Caridea
Cnidaria
Decapoda (Crustacea)
Hippolyte obliquimanus
Hippolytidae
Rhynchocinetes
spellingShingle Acrosomal spike
Morphology
Nuclear arms
Spermatozoa
Caridea
Cnidaria
Decapoda (Crustacea)
Hippolyte obliquimanus
Hippolytidae
Rhynchocinetes
A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
topic_facet Acrosomal spike
Morphology
Nuclear arms
Spermatozoa
Caridea
Cnidaria
Decapoda (Crustacea)
Hippolyte obliquimanus
Hippolytidae
Rhynchocinetes
description The aim of this study was to describe and illustrate the morphology of the spermatozoon of the Western Atlantic shrimp, Hippolyte obliquimanus. Individuals were sampled from Itagua Beach (Ubatuba, southern Brazil). The male reproductive system was dissected and morphological analysis was undertaken using a stereomicroscope, a light microscope, and transmission electron and scanning electron microscopes. When viewed from the nuclear or acrosomal poles, each spermatozoon has many translucent radiating arms (about 20) from a denser cell body, while laterally the cell body and arms resemble a ''cnidarian medusa'', with all the arms projecting away from the bell-like cell body. This sperm morphology is distinct from the ''thumbtack''-shaped spermatozoa observed in the majority of carideans but has similarities to the spermatozoa of Rhynchocinetes spp. The morphology of sperm of several species of the genus Hippolyte resembles the spermatozoon of H. obliquimanus with the presence of posterior nuclear arms, but it is necessary to study other Hippolyte species to place these arms in the context of the genus. © 2012 Taylor & Francis.
title A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
title_short A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
title_full A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
title_fullStr A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
title_full_unstemmed A novel spermatozoan ultrastructure in the shrimp Hippolyte obliquimanus Dana, 1852 (Decapoda: Caridea: Hippolytidae)
title_sort novel spermatozoan ultrastructure in the shrimp hippolyte obliquimanus dana, 1852 (decapoda: caridea: hippolytidae)
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07924259_v56_n4_p299_Terossi
http://hdl.handle.net/20.500.12110/paper_07924259_v56_n4_p299_Terossi
_version_ 1768544824297783296

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