Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/194639 |
Resumo: | The testes in the anurans are paired ovoid organs constituted by seminiferous structures surrounded by the fibrous connective tissue, commonly unprovided ofpigments. This study tried to analyze the morphological characteristics of rare and conspicuous pigment-containing cells and their relationship with other structures. The pigment cells are variously and indistinctly also termed Kuppfer cells in the liver, pigment cells, extracutaneous pigment cells, pigmented macrophages, melanomacrophages, melanophage, melanophores and melanocytes in the liver, spleen and kidney and other visceral structures of exothermic vertebrates. Ten male samples of Physalaemus nattereri (Steindachner, 1863) (Leptodactylidae) were used. After macroscopic analyses, the testicular fragments weresubmitted to the histological routine, fixed with karnovisky, embedded Historesin and coloration with Haematoxylin/Eosin. A rare peculiarity was the presence of numerous pigment-containing cells (melanocytes) randomly distributed in the albuginea tunic and testicular interstitium, giving the testes a dark brown coloration. This unusual characteristic has been rarely described and in other lower vertebrates, the pigment cells can be found in different organs, constituting an extracutaneous pigmentary system of unknown function. Further, it was identified a conspicuous variation, as to presence and distribution pattern due to possible species-specific aspects. However, histologically there is no difference in the germ epithelium arrangement. Between the seminiferous locules, there is an inter-locular tissue composed by Leydig interstitial cells, fibroblasts, efferent ductules, melanocytes and blood vessels. This inter-locular tissue is relatively scarce, presenting melanocytes in all specimens analyzed intimate associated with blood vessels. They are irregular cells with numerous melanosomes and long cytoplasmic processes. |
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Repositório Institucional da UNESP |
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Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary systemThe testes in the anurans are paired ovoid organs constituted by seminiferous structures surrounded by the fibrous connective tissue, commonly unprovided ofpigments. This study tried to analyze the morphological characteristics of rare and conspicuous pigment-containing cells and their relationship with other structures. The pigment cells are variously and indistinctly also termed Kuppfer cells in the liver, pigment cells, extracutaneous pigment cells, pigmented macrophages, melanomacrophages, melanophage, melanophores and melanocytes in the liver, spleen and kidney and other visceral structures of exothermic vertebrates. Ten male samples of Physalaemus nattereri (Steindachner, 1863) (Leptodactylidae) were used. After macroscopic analyses, the testicular fragments weresubmitted to the histological routine, fixed with karnovisky, embedded Historesin and coloration with Haematoxylin/Eosin. A rare peculiarity was the presence of numerous pigment-containing cells (melanocytes) randomly distributed in the albuginea tunic and testicular interstitium, giving the testes a dark brown coloration. This unusual characteristic has been rarely described and in other lower vertebrates, the pigment cells can be found in different organs, constituting an extracutaneous pigmentary system of unknown function. Further, it was identified a conspicuous variation, as to presence and distribution pattern due to possible species-specific aspects. However, histologically there is no difference in the germ epithelium arrangement. Between the seminiferous locules, there is an inter-locular tissue composed by Leydig interstitial cells, fibroblasts, efferent ductules, melanocytes and blood vessels. This inter-locular tissue is relatively scarce, presenting melanocytes in all specimens analyzed intimate associated with blood vessels. They are irregular cells with numerous melanosomes and long cytoplasmic processes.Sociedade Brasileira De Zoologia, Univ Federal ParanaUniversidade Estadual Paulista (Unesp)[Anonymous]2020-12-10T16:32:52Z2020-12-10T16:32:52Z2005-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article454-460Revista Brasileira De Zoologia. Curitiba: Sociedade Brasileira De Zoologia, Univ Federal Parana, v. 22, n. 2, p. 454-460, 2005.0101-8175http://hdl.handle.net/11449/194639WOS:000230399600023Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira De Zoologiainfo:eu-repo/semantics/openAccess2021-10-22T19:32:31Zoai:repositorio.unesp.br:11449/194639Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:06:50.895301Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
title |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
spellingShingle |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system [Anonymous] |
title_short |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
title_full |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
title_fullStr |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
title_full_unstemmed |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
title_sort |
Testicular pigmentation in Physalaemus nattereri (Steindachner) (Amphibia, Anura) with anatomical observations on the extracutaneous pigmentary system |
author |
[Anonymous] |
author_facet |
[Anonymous] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
[Anonymous] |
description |
The testes in the anurans are paired ovoid organs constituted by seminiferous structures surrounded by the fibrous connective tissue, commonly unprovided ofpigments. This study tried to analyze the morphological characteristics of rare and conspicuous pigment-containing cells and their relationship with other structures. The pigment cells are variously and indistinctly also termed Kuppfer cells in the liver, pigment cells, extracutaneous pigment cells, pigmented macrophages, melanomacrophages, melanophage, melanophores and melanocytes in the liver, spleen and kidney and other visceral structures of exothermic vertebrates. Ten male samples of Physalaemus nattereri (Steindachner, 1863) (Leptodactylidae) were used. After macroscopic analyses, the testicular fragments weresubmitted to the histological routine, fixed with karnovisky, embedded Historesin and coloration with Haematoxylin/Eosin. A rare peculiarity was the presence of numerous pigment-containing cells (melanocytes) randomly distributed in the albuginea tunic and testicular interstitium, giving the testes a dark brown coloration. This unusual characteristic has been rarely described and in other lower vertebrates, the pigment cells can be found in different organs, constituting an extracutaneous pigmentary system of unknown function. Further, it was identified a conspicuous variation, as to presence and distribution pattern due to possible species-specific aspects. However, histologically there is no difference in the germ epithelium arrangement. Between the seminiferous locules, there is an inter-locular tissue composed by Leydig interstitial cells, fibroblasts, efferent ductules, melanocytes and blood vessels. This inter-locular tissue is relatively scarce, presenting melanocytes in all specimens analyzed intimate associated with blood vessels. They are irregular cells with numerous melanosomes and long cytoplasmic processes. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-06-01 2020-12-10T16:32:52Z 2020-12-10T16:32:52Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Brasileira De Zoologia. Curitiba: Sociedade Brasileira De Zoologia, Univ Federal Parana, v. 22, n. 2, p. 454-460, 2005. 0101-8175 http://hdl.handle.net/11449/194639 WOS:000230399600023 |
identifier_str_mv |
Revista Brasileira De Zoologia. Curitiba: Sociedade Brasileira De Zoologia, Univ Federal Parana, v. 22, n. 2, p. 454-460, 2005. 0101-8175 WOS:000230399600023 |
url |
http://hdl.handle.net/11449/194639 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira De Zoologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
454-460 |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira De Zoologia, Univ Federal Parana |
publisher.none.fl_str_mv |
Sociedade Brasileira De Zoologia, Univ Federal Parana |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128317252960256 |