Morphologic study of the efferent ductules of the pigeon (Columba livia)

Stefanini, Maíra Aparecida; Orsi, Antônio Marcos; Gregório, Elisa Aparecida; Viotto, Maria José Salete; Baraldi-Artoni, Silvana Martinez

doi:10.1002/(sici)1097-4687(199912)242:3<247::aid-jmor4>3.0.co;2-g

Cited by 19 publications

(28 citation statements)

References 13 publications

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“…This basic standard of organization has been described for other reptiles (Jollie, 1962;Ilio and Hess, 1994;Holmes and Gist, 2004;Akbarsha et al, 2006), birds (Artoni et al, 1999;Aire and Stoley, 2000;Simões et al, 2004;Orsi et al, 2007) and mammals (Ilio and Hess, 1994); however, the morphology of the seminal ducts can differ significantly between given groups of animals (Holmes and Gist, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Among birds, other cellular types were identified. In Columba livia (Stefanini et al, 1999) ciliated cells, clear, dark, and angular nonciliated cells, and halo cells were found. In the apical region of nonciliated cells of Struthio camelus (Aire and Stoley, 2000) and Anas plathyrynchos (Simões et al, 2004), microvilli were found.…”

Section: Efferent Ductulesmentioning

confidence: 96%

“…Many previous studies deal with the structure, function, and regulation of the epididymal ducts of mammals and birds (Hamilton and Cooper, 1978;Calvo et al, 1987;Stefanini et al, 1999;Aire and Stoley, 2000;Chimming and Vicentini, 2001;Aire, 2002a;Simões et al, 2004;Gist et al, 2007). However, few studies emphasize the morphology of the excurrent ducts of reptiles.…”

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Morphological Changes of the Epididymis and Description of the Excurrent Ducts of Phrynops geoffroanus (Testudines: Chelidae) During the Reproductive Cycle

Cabral

Zieri

Franco‐Belussi

et al. 2010

The Anatomical Record

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The seminal ducts (efferent ductule, epididymis, and deferent duct) in adults of Phrynops geoffroanus were examined using light microscopy. A series of tubules (efferent ductules) connect the testes to the epididymides. The efferent ductules are formed by a rete of small tubules of varying diameters, with simple columnar epithelium formed by the ciliated cells, nonciliated cells, and few basal cells. The epididymis is a simple, long and highly convoluted tubule that receives the efferent ductules throughout its extension. It is covered by a pseudostratified columnar epithelium with three cellular types: the principal cells, which are the most abundant, basal cells, and a small narrow cell. The histological differences in the epididymis region (cranial, medial, and caudal), as well as the differences in the epithelium throughout the reproductive cycle, are discussed. The deferent ducts consist of a low pseudostratified epithelium with two cellular types: the principal and basal cells. During the months analyzed, spermatozoa were stored in the epididymis, and deferent ducts were found. Anat Rec, 294:145-155, 2011. V V C 2010 Wiley-Liss, Inc.

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Section: Discussionmentioning

confidence: 99%

Section: Efferent Ductulesmentioning

confidence: 96%

mentioning

confidence: 99%

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Morphological Changes of the Epididymis and Description of the Excurrent Ducts of Phrynops geoffroanus (Testudines: Chelidae) During the Reproductive Cycle

Cabral

Zieri

Franco‐Belussi

et al. 2010

The Anatomical Record

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“…Em termos funcionais, aparentemente, o DE de aves equivaleria à cabeça do epidídimo de mamíferos e o ducto deferente, nesta classe, corresponderia ao corpo e à cauda epididimários de mamíferos (Tingari 1971, De Reviers 1975 (Clullow & Jones 1982, Howarth 1983, sendo que na luz do ducto deferente é onde efetivamente ocorreria a maturação gamética (Howarth 1983, Stefanini et al 1996, Stefanini et al 1999a. As células P do epitélio tubular do DE em aves, aparentemente, são menos ativas, histofisiologicamente, do que as correspondentes células P dos dúctulos eferentes nesta classe (Hess & Thurston 1977, Stefanini et al 1999a. Contudo, apesar de parecer ser modesto o papel das células P no DE de aves, e, conseqüentemente, a relevância funcional do próprio DE concernente ao que se cumpre histofisiologicamente nos compartimentos epitelial e luminal dos ductos excretores dos testículos, neste filo, afirmou-se, para o galo doméstico, que os espermatozóides permanecem 30 minutos na luz dos dúctulos eferentes e 80 minutos na luz do DE (Clullow & Jones 1982.…”

Section: Introdução Introdução Introdução Introdução Introduçãounclassified

Variabilidade sazonal no ducto epididimário de codorna doméstica: observações morfológicas

et al. 2007

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O ducto epididimário (DE) de codorna doméstica mostrou, ao longo do ano, variabilidade pequena, porém muito expressiva no outono, o qual corresponde à fase quiescente do ciclo testicular anual. A morfologia do DE na primavera foi, em termos, similar à verificada no verão e inverno. Nestas fases notaram-se aumento significante do calibre tubular do DE; estocagem intraluminal de espermatozóides e ocorrência de mitocôndrias, lamelas do RE, vesículas variáveis quanto à forma, dimensões e conteúdos e presença de alguns lisossomos localizados, principalmente, no citoplasma apical das células principais (P), no epitélio epididimário. Estas características ultra-estruturais das células P parecem ser indicativas da ocorrência de processos ativos de endocitose e de secreção micromerócrina. A quiescência outonal foi caracterizada pelo aspecto anfractuoso do DE; ausência de espermatozóides e pouco material intraluminal, observados à microscopia de luz. Características ultra-estruturais degenerativas foram verificadas ao nível do citoplasma supranuclear das células P epididimárias no outono.

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“…Evcil kümes hayvanlarında seminifer tubullerin tubuli rektiye bağlandığı bildirilmiştir (8,30). Rete testis (RT) devekuşunda intratestiküler, intrakapsüler ve intraepididimal olarak yerleşirken (7), güvercinde intrakapsüler ve intraepididimal olarak yerleştiği belirtilmiştir (28). Epididimis duktuli efferentis (DE), bağlayıcı kanallar ve duktus epididimidisden ibarettir (20 (3,20).…”

Section: Introductionunclassified

Bıldırcın (Coturnix coturnix japonica) erkek genital sisteminin yapısı üzerinde ışık ve elektron mikroskobik çalışmalar

Deniz;ÖZCAN¹

2011

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Özet: Bu araştırmada, bıldırcın erkek genital sistem organlarından testis, epididimis ve duktus deferensin histolojik yapısı ışık ve elektron mikroskobik olarak incelendi. Çalışmada materyal olarak ergin ve sağlıklı 10 adet erkek bıldırcının genital sisteminden alınan doku örnekleri kullanıldı. İntertubuler alanlarda bağ doku ve Leydig hücrelerinin çok az olduğu saptandı. Seminifer tubullerin doğrudan rete testise (RT) açıldığı görüldü. Duktuli efferentesler (DE), proksimal (DE-P) ve distal (DE-D) olmak üzere iki bölge halinde incelendi. Rete testisin doğrudan DE-P'ye bağlandığı tespit edildi. DE-D'lerin açıldığı bağlayıcı kanalların (CD) birleşerek her testisin duktus epididimidisini oluşturduğu gözlendi. Elektron mikroskobik incelemelerde seminifer tubullerin arasında bulunan Leydig hücrelerinin iki tip olduğu görüldü. Bunlardan birinde bol miktarda salgı vezikülü ve mitokondriyon görülürken, diğerinde az miktarda mitokondriyon ve içi boş vakuoller olduğu belirlendi. DE epitelinin silyumlu ve silyumsuz olmak üzere iki tip hücreden oluştuğu saptandı. DE-P'lerde yer alan silyumsuz hücrelerde merkezleri boş yağ vakuolleri ve koyu içerikli iri granüller saptandı. DE-D'lerin silyumsuz epitel hücrelerinde yağ vakuolleri gözlenmedi. Duktus epididimidis epitelinde apokrin türde salgıya rastlandı. Kaudal duktus deferens epitelinde yoğun, apokrin türde salgıya rastlanırken, kraniyelde bu tip bir salgılama görülmedi. Sonuç olarak, bıldırcın erkek genital sistem organları olan testis, RT, DE, CD, duktus epididimidis ve duktus deferensin histolojik yapısı ışık ve elektron mikroskobik seviyede ortaya kondu.Anahtar sözcükler: Bıldırcın, Epididimis, Duktus deferens, Işık-Elektron mikroskop, Testis.Light and electron microscopic studies on the structure of the male reproductive system in quail (Coturnix coturnix japonica) Summary: The aim of this study was to investigate the histological structure of the testis, epididymis and ductus deferens of quail male reproductive system by light and electron microscopy. In this study, tissue samples taken from 10 of the healthy and mature male quails were used as material. Relatively low number of Leydig cells and thin connective tissue trabecules were seen in the intertubular spaces. Seminiferous tubuli directly opened to rete testis (RT). Ductuli efferentes (DE) were investigated into two separate parts, as proximal (DE-P) and distal (DE-D). RT directly connected to DE-P. opened into connecting ducts those finally formed unique ductus epidymidis of each testis. Next to ductus epididymidis and located out of epididymis, ductus deferens opened into cloaka after contortion. In electron microscopic investigation, Leydig cells were seen interstitium and two types of the cells were distinguished. One type had many secretory granules and mitochondri while the 2 nd type contained less numerous mitochondria and electron-lucent vacuoles. DE's epithelium was formed by two types of cells, ciliated and non-ciliated. Non-ciliated cells located in DE-P had empty centred lipid vacuole and large, dense...

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Morphologic study of the efferent ductules of the pigeon (Columba livia)

Cited by 19 publications

References 13 publications

Morphological Changes of the Epididymis and Description of the Excurrent Ducts of Phrynops geoffroanus (Testudines: Chelidae) During the Reproductive Cycle

Morphological Changes of the Epididymis and Description of the Excurrent Ducts of Phrynops geoffroanus (Testudines: Chelidae) During the Reproductive Cycle

Variabilidade sazonal no ducto epididimário de codorna doméstica: observações morfológicas

Bıldırcın (Coturnix coturnix japonica) erkek genital sisteminin yapısı üzerinde ışık ve elektron mikroskobik çalışmalar

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