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Silhouette differences among cats do not suggest a general selection for paedomorphosis Texte intégral
2013
Pares-Casanova, P.M., University of Lleida, 25198 Lleida, Spain
Silhouette differences among cats do not suggest a general selection for paedomorphosis
2013
Pares-Casanova, P.M., University of Lleida, 25198 Lleida, Spain
Paedomorphosis is the retention of juvenile morphology at maturity and is important in generating evolutionary change in domestic species and species in the wild. This preliminary study compared morphological characteristics of seven domestic cat pure breeds and felid species from around the world. An original procedure based on elliptical Fourier (EF) methods was applied to head lateral views of specimens and were assessed in order to analyse head profile. For comparative purposes three domestic kittens of different ages and three species of genus Lynx were also used. EF descriptors, allowed for the quantification of the head profile. Using the Fourier transform, reconstruction of the mean head profile revealed that there was a general shape difference between wild cats, domestic cats and kittens. Results suggested that variability in head profile differentiate quite well between adult cats and kittens, but domestic and wild cats appeared grouped into a similar cluster. The similarity between breeds can thus be attributed more to the general head profile than to flatness, i.e. to the general conformation rather than facial profile. Therefore, no effect of paedomorphism on the studied breeds can be undertaken. The present approach opens interesting ethnological perspectives for the aloidic characterisation for domestic breeds.
Afficher plus [+] Moins [-]Silhouette differences among cats do not suggest a general selection for paedomorphosis Texte intégral
2013 | 2025
Parés Casanova, Pere-Miquel
Paedomorphosis is the retention of juvenile morphology at maturity and is important in generating evolutionary change in domestic species and species in the wild. This preliminary study compared morphological characteristics of seven domestic cat pure breeds and felid species from around the world. An original procedure based on elliptical Fourier (EF) methods was applied to head lateral views of specimens and were assessed in order to analyse head profile. For comparative purposes three domestic kittens of different ages and three species of genus Lynx were also used. EF descriptors, allowed for the quantification of the head profile. Using the Fourier transform, reconstruction of the mean head profile revealed that there was a general shape difference between wild cats, domestic cats and kittens. Results suggested that variability in head profile differentiate quite well between adult cats and kittens, but domestic and wild cats appeared grouped into a similar cluster. The similarity between breeds can thus be attributed more to the general head profile than to flatness, i.e. to the general conformation rather than facial profile. Therefore, no effect of paedomorphism on the studied breeds can be undertaken. The present approach opens interesting ethnological perspectives for the aloidic characterisation for domestic breeds.
Afficher plus [+] Moins [-]Growth variation in skull morphology of Kuril harbor seals (Phoca vitulina stejnegeri) and spotted seals (Phoca largha) in Hokkaido, Japan
2009
Nakagawa, E., Hokkaido Univ., Sapporo (Japan) | Kobayashi, M. | Suzuki, M. | Tsubota, T.
We examined morphological growth variations in skull features between the Kuril harbor seal and the spotted seal in Hokkaido, Japan. Skulls from 80 Kuril harbor seals and 41 spotted seals were collected, and we measured 29 metric and 6 non-metric cranial characteristics. Three growth classes were defined according to the postnatal developmental stage: pups (0 year), subadults (1-4 years old) and adults (more than 5 years old). We detected sexual dimorphism in Kuril harbor seal pups, subadults, and adults. Although interspecies differences were detected in each growth class, Kuril harbor seals were larger and more massive than spotted seals; this feature was already detectable in pups. We did not detect certain cranial characteristics with which to identify the two species, but it was possible to identify any unknown specimens to their species, sex, and growth class using the cranial data generated in this study. Using 6 non-metric cranial characteristics, we identified significant interspecies differences with regard to the shape of the temporozygomatic suture and the extent of the nasal-incisive suture; the shape of the temporozygomatic suture and the shape of the nares were indicators of growth class in Kuril harbor seals. Although non-metric cranial characteristics have a lower discriminating power than metric characteristics, they are easy to use in the field even by inexperienced researchers.
Afficher plus [+] Moins [-]Development of bovine abomasum in prenatal period | Desenvolvimento do abomaso de bovinos no período pré-natal Texte intégral
2014
Gabriela Mansano do Nascimento | Silvia Helena Venturoli Perri | Roberto Gameiro de Carvalho | Cristina Maria Rodrigues Monteiro
<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings></xml><![endif]--><p class="MsoNormal"><span style="mso-ansi-language: EN-US;" lang="EN-US">For this purpose, samples of Nelore fetus abomasum (Bos taurus indicus) were classified into five groups: 1 – fetuses with 9 to 15 weeks (8 to 21 cm) of gestation, 2 – fetuses with 16 to 22 weeks (23 to 37 cm), 3 – fetuses at 23 to 29 weeks (40 to 58 cm) 4 – fetuses with 30 to 36 weeks (61 to 77 cm) and 5 – fetuses with 37 to 43 weeks (79 to 88 cm). Histologic sections were stained with Hematoxylin and eosin, picrosirius and Mallory’s trichrome methods and examined under light microscopy. In fetus with 11 cm of length showed deep mucosa, wide folds and villi lined by single cylindrical epithelium, lamina propria, submucosa, muscular sublayers and serosa. Fetus with 13.5 cm, villi were evident and muscular layer of the mucosa was formed. At 16.5 cm, could be seen an increase in mucosa glands size and number. In fetus of 26 cm, showed gastric mucous glands at great number and ramifications. At 29 cm large folds, were observed. At 37 cm, showed glandular epithelium, muscular layer of the mucosa and muscular layer well development. Fetus with 42 cm, showed deep glands with corresponding mucous cells surrounding by thin lamina propria. It was concluded that the histomorphometric values of muscular layer and total abomasum wall were increased for all groups except for groups 4 and 5 which there was a decline of values, without presenting a significant difference and there was no continuous pattern of growth for other components of abomasum wall.</span><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> 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normal";mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-parent:"";mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-para-margin-top:0cm;mso-para-margin-right:0cm;mso-para-margin-bottom:10.0pt;mso-para-margin-left:0cm;line-height:115%;mso-pagination:widow-orphan;font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-fareast-language:EN-US;}</style><![endif]--> | <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings></xml><![endif]--><p class="MsoNormal"><span style="font-size: 10.0pt; line-height: 115%; font-family: 'MinionPro-Regular','serif'; mso-bidi-font-family: MinionPro-Regular;">Para esta pesquisa, amostras de abomaso de fetos da raça Nelore </span><em><span style="font-size: 10.0pt; line-height: 115%; font-family: 'MinionPro-It','serif'; mso-bidi-font-family: MinionPro-It;">(Bos taurus indicus) </span></em><span style="font-size: 10.0pt; line-height: 115%; font-family: 'MinionPro-Regular','serif'; mso-bidi-font-family: MinionPro-Regular;">foram divididos em cinco grupos: 1º – fetos com 9 a 15 semanas (8 a 21cm) de gestação, 2º – fetos com 16 a 22 semanas (23 a 37 cm), 3º – fetos com 23 a 29 semanas (40 a 58 cm), 4º – fetos com 30 a 36 semanas (61 a 77 cm) e 5º – fetos com 37 a 43 semanas (79 a 88 cm). Os cortes histológicos foram corados com Hematoxilina e Eosina, picrossirius e Tricrômico de Mallory e examinados ao microscópio de luz. No feto de 11 cm, observaram-se pregas mucosas largas, vilosidades revestidas por epitélio simples cilíndrico, lâmina própria, tela submucosa, túnica muscular com estratos interno e externo e serosa. Aos 13,5 cm, as vilosidades eram evidentes com formação da lâmina muscular da mucosa. Aos 16,5 cm, houve aumento em número e tamanho das glândulas mucosas. No feto de 26 cm, observou-se aumento das túnicas e ramificações das glândulas. Aos 29 cm, observou-se aumento no tamanho das pregas. Com 37 cm, houve aumento do epitélio glandular, lâmina muscular da mucosa e túnica muscular. Com 42 cm, as glândulas eram profundas com células mucosas e lâmina própria delgada. Concluiu-se que as os valores histomorfométricos da túnica muscular e parede total do abomaso foram crescentes para todos os grupos, com exceção dos grupos 4 e 5 para os quais houve queda dos valores, sem diferença significante e não houve crescimento contínuo para os demais constituintes da parede do abomaso.</span>
Afficher plus [+] Moins [-]Desenvolvimento do omaso de bovinos da raça Nelore (Bos taurus indicus) durante o período pré-natal Texte intégral
2013
Gabriela Mansano do Nascimento | Silvia Helena Venturoli Perri | Roberto Gameiro de Carvalho | Cristina Maria Rodrigues Monteiro
O desenvolvimento do estômago de mamíferos domésticos é um processo complexo, especialmente em ruminantes. Essa pesquisa analisou o desenvolvimento desse órgão durante o período pré-natal. Foram utilizadas amostras de omaso de fetos da raça Nelore (Bos taurus indicus) divididos em cinco grupos com seis amostras cada: 1º – fetos com 9 a 15 semanas (8 a 21cm) de gestação, 2º – fetos com 16 a 22 semanas (23 a 37cm), 3º – fetos com 23 a 29 semanas (40 a 58cm), 4º – fetos com 30 a 36 semanas (61 a 77cm) e 5º– fetos com 37 a 43 semanas (79 a 88cm). Os cortes histológicos foram corados com Hematoxilina e Eosina e Picrossirius e examinados ao microscópio de luz. No feto de 11 cm, foi observado mucosa com lâminas primárias, secundárias e terciárias uniformes e demais camadas presentes. No feto de 13,5 cm surgiram as lâminas quaternárias, papilas nas lâminas primárias e secundárias e a formação da muscular da mucosa. Aos 28 cm, as papilas estavam em pleno desenvolvimento, assim como as lâminas, principalmente as quaternárias. No feto de 42 cm houve início de queratinização epitelial e, no de 56 cm, estava totalmente queratinizado. No feto de 60 cm, as lâminas possuíam papilas grandes e afiladas no ápice e, aos 65 cm, houve diminuição do epitélio e aumento da camada muscular. O feto de 83 cm apresentou lâminas delgadas, muscular da mucosa discreta e papilas por toda a superfície. Concluiu-se que as lâminas e papilas foram as estruturas que mais apresentaram modificações durante o desenvolvimento fetal.
Afficher plus [+] Moins [-]Padrões morfológicos e critérios de malignidade do tumor venéreo transmissível aos exames citopatológico e histopatológico Texte intégral
2013
Caroline Rocha de Oliveira Lima | Rogério Elias Rabelo | Valcinir Aloisio Scalla Vulcani | Adriana Pereira Furtado | Panmera Almeida Helrigel | Luiz Augusto Batista Brito | Veridiana Maria Brianezi Dignani de Moura
Padrões morfológicos e critérios de malignidade do tumor venéreo transmissível aos exames citopatológico e histopatológico Texte intégral
2013
Caroline Rocha de Oliveira Lima | Rogério Elias Rabelo | Valcinir Aloisio Scalla Vulcani | Adriana Pereira Furtado | Panmera Almeida Helrigel | Luiz Augusto Batista Brito | Veridiana Maria Brianezi Dignani de Moura
Este estudo teve por objetivo identificar os padrões morfológicos e os critérios de malignidade do TVT aos exames citológico e histopatológico e relacionar essas características à evolução clínica e à resposta à quimioterapia. Dos animais estudados, dezesseis cães eram fêmeas e quatro machos. A idade dos animais variou entre um e dez anos de idade. Quanto à raça, 80% dos cães eram sem raça definida e 20% de outras raças. Constatou-se que as amostras citológicas permitiram melhor caracterização do tipo celular do que as histológicas. O TVT tipo plasmocitoide foi o de maior ocorrência, seguido pelos padrões linfocitoide e misto. Não houve diferença entre os escores estabelecidos para os critérios de malignidade e os tipos do TVT. Nenhum tipo morfológico do TVT diferiu quanto à resposta quimioterápica, mas o TVT apresenta particularidades morfológicas que podem interferir no comportamento tumoral, especialmente aquelas relacionadas à maior agressividade, e que são observadas no TVT plasmocitoide.
Afficher plus [+] Moins [-]Morphological patterns and malignancy criteria of transmissible venereal tumor in cytopathological and histopathological exams | Padrões morfológicos e critérios de malignidade do tumor venéreo transmissível aos exames citopatológico e histopatológico Texte intégral
2013
Caroline Rocha de Oliveira Lima | Rogério Elias Rabelo | Valcinir Aloisio Scalla Vulcani | Adriana Pereira Furtado | Panmera Almeida Helrigel | Luiz Augusto Batista Brito | Veridiana Maria Brianezi Dignani de Moura
Este estudo teve por objetivo identificar os padrões morfológicos e os critérios de malignidade do TVT aos exames citológico e histopatológico e relacionar essas características à evolução clínica e à resposta à quimioterapia. Dos animais estudados, dezesseis cães eram fêmeas e quatro machos. A idade dos animais variou entre um e dez anos de idade. Quanto à raça, 80% dos cães eram sem raça definida e 20% de outras raças. Constatou-se que as amostras citológicas permitiram melhor caracterização do tipo celular do que as histológicas. O TVT tipo plasmocitoide foi o de maior ocorrência, seguido pelos padrões linfocitoide e misto. Não houve diferença entre os escores estabelecidos para os critérios de malignidade e os tipos do TVT. Nenhum tipo morfológico do TVT diferiu quanto à resposta quimioterápica, mas o TVT apresenta particularidades morfológicas que podem interferir no comportamento tumoral, especialmente aquelas relacionadas à maior agressividade, e que são observadas no TVT plasmocitoide. | The aim of this study was to identify morphological patterns and malignancy criteria of the TVT in cytopathological and histopathological evaluations and relate these characteristics to clinical evolution and response to chemotherapy. Regarding studied animals, sixteen dogs were female and four were male. The age of the animals ranged between one and ten years old. Considering breed, 80% of the dogs were mongrel dogs and 20% were of other breeds. It was found that the cytological samples allowed a better characterization of the cell type than histological ones. The plasmacytoid was the most common morphological type of TVT, followed by the lymphocytoid and mixed standards. There was no difference among the scores for the malignancy criteria and morphological types of TVT. Regarding response to chemotherapy, no morphological type of the TVT showed any difference, but the TVT presents morphological peculiarities that may interfere with tumor behavior, especially those related to increased aggressiveness and that are observed in the plasmacytoid TVT.
Afficher plus [+] Moins [-]Adaptação do epitélio branquial de peixes eurialinos, guaru (Poecilia vivipara), para água doce Texte intégral
2011
Simone Maria Teixeira de Sabóia-Moraes | Paulo Hilário Nascimento Saldiva | José Roberto Machado Cunha da Silva | Áureo Tatsumi Yamada | Thiago Pinheiro Arrais Aloia | Francisco Javier Hernandez-Blazquez
O peixe eurihalino sul-americano Poecilia vivipara (BLOCH; SNEIDER, 1801), o guppy, é encontrado tanto em estuários quanto em águas de rios, o que sugere uma alta adaptabilidade aos diferentes ambientes de salinidade. Neste trabalho, estudamos a adaptação do epitélio interlamelar, do arco e do rastelo das brânquias dos peixes de estuário de água doce. Os resultados revelam que o epitélio branquial de Poecilia vivipara pode ajustar-se à água doce, diminuindo a proporção volumétrica (PV) de células mucosas do epitélio interlamelar e aumentando a PV de células clorídricas. No entanto, não houve nenhuma evidência de alteração morfológica semelhante na região do rastelo branquial. O epitélio do rastelo branquial parece ser parte de um compartimento diferente que é menos sensível a variações de salinidade.
Afficher plus [+] Moins [-]Macroscopic aspects of the anatomy of the reproductive system of escargots: Achatina fulica and Achatina monochromatica | Aspectos macroscópicos da anatomia do sistema reprodutor de escargots: Achatina fulica e Achatina monochromatica Texte intégral
2008
Dulcinéa Gonçalves Teixeira | José Luiz Guerra | Zenon Silva | Rose Eli Grassi Rici Azarias | Maria Fátima Martins
The macro-anatomy of the reproductive system of both Achatina fulica and Achatina monochromatica was studied, by establishing the morphologic parameters of both species. Fifteen samples of each species with nearly twelve years old from the same family were used. The specimens were sacrificed by freezing (-2ºC). The collection of the reproductive system was made after the retreat from the shell and dissection of the animal. It was observed that even if the specimens have been maintained in the same environmental and alimentary conditions, as well as submitted to the same type of selection, the development of their reproductive organs show some variation. In both species, some segments of the reproductive system morphologic aspects differ macroscopically, although the disposition and the location of these segments are identical. | Foi estudada a macro-anatomia do sistema reprodutor do escargot das espécies Achatina fulica e Achatina monochromatica e estabelecidos os parâmetros morfológicos comparativos de ambas espécies. Foram utilizados 15 exemplares de cada espécie com quase 12 meses de idade pertencentes à mesma família. E estes foram sacrificados por congelamento (-2ºC). A coleta do sistema reprodutor foi feita após a retirada da concha e dissecação do animal. Verificou-se que, apesar dos animais terem sido mantidos nas mesmas condições ambientais e alimentares bem como submetidos ao mesmo tipo de seleção, o desenvolvimento dos órgãos reprodutores apresentou certa variação. Os aspectos morfológicos de alguns segmentos do sistema reprodutor, nas duas espécies, diferem macroscopicamente, porém, a disposição e a localização destes segmentos são idênticas.
Afficher plus [+] Moins [-]Morphological characterization of the transition between the small and the large intestines in boar (Sus scrofa, L., 1758) | Caracterização morfológica da região de transição entre o intestino delgado e o grosso no javali Texte intégral
2007
Ana Paula Vidotti | Liberato John Alphonse Di Dio | Isaura Maria Mesquita Prado
A study on the morphology of the transition between the small and large intestines was carried out in 32 wild boars (Sus scrofa, L., 1758) genetically chosen, male and female, with ages averaging from young (4 months) to adult (14 months). We examed at macroscopic level all the specimens the shape and direction of the ileal prominence into the large intestine, of the ostium ileale, of the termination of the ileum and of the intestines ceco and ascending colon. Then, whe took some measurements of the ileum inside the large intestine. The results were analyzed by Wilcoxon Test (± < 0,05). The terminal ileum showed cylindrical morphology in 100% of the cases. In all of the cases, we observed that the ileal eminence was papilar shape ileal papilla (papilla ilealis) towards the large intestine with an oblique direction. On the top of the papilla we observed one central ostium (ostium ileale), relatively closed and star shaped (75% of the cases), or relatively opened and oval shaped (25%). Our findings demonstrate that the different morphology of the ileo-ceco-colic junction as compared to other animals, another indication against the generalization of the description of this region in mammals. | Estudou-se a morfologia da região de transição entre os intestinos delgado e grosso de 32 javalis (Sus scrofa, L., 1758), geneticamente selecionados, de ambos os sexos, entre jovens e adultos. O exame macroscópico contemplou - conformação e direção da saliência do íleo no intestino grosso, do óstio ileal, do íleo terminal e dos intestinos ceco e cólon ascendente, bem como as medidas do íleo no intestino grosso. Os resultados foram submetidos ao teste de Wilcoxon (±<0,05). A terminação do íleo no intestino grosso constituía uma junção íleo-ceco-cólica. O ceco estava constituído por 3 (três) tênias: uma lateral e uma medial, contínuas, e uma ventral, esta terminando antes do ápice deste segmento. A superfície externa do cólon ascendente apresentava duas tênias: lateral e medial, em continuidade com as tênias homônimas do ceco. O íleo terminal dos javalis apresentou morfologia cilindróide em 100% dos casos. Em todos os casos observamos a eminência ileal em forma papilar - papila ileal (papilla ilealis) - voltada para o intestino grosso, com direção oblíqua. No ápice da papila observamos um óstio central (ostium ileale), relativamente fechado e de forma estrelada (75% dos casos), ou relativamente aberto e de forma ovalada (25%). Nossos achados demonstraram diferentes morfologias em relação a outros animais, constituindo mais uma indicação contra a generalização desta região nos mamíferos.
Afficher plus [+] Moins [-]Origem e ramificação do tronco braquiocefálico e artéria subclávia em gansos domésticos (Anser domestica) | Origin and ramification of the brachiocephalic trunk and subclavian artery in domestic goose (Anser domestica) Texte intégral
2006
Tatiana Carlesso dos Santos | Cheston Cesar Honorato Pereira | Pedro Primo Bombonato | Luiz Paulo Cobra Monteiro-Filho
Estudou-se, mediante dissecação, a origem e a ramificação dos ramos do tronco braquiocefálico em 30 gansos adultos (Anser domestica), 21 machos e 09 fêmeas. Os animais, após eutanásia, foram injetados, na artéria isquiática direita, com solução de neoprene látex corado e fixados em solução aquosa de formalina 10%. Os troncos braquiocefálicos, direito e esquerdo, originam-se na aorta, logo após a emergência desta, no átrio esquerdo e, dividem-se nas artérias subclávia e carótida comum homônimas. As artérias subclávias emitiram em todos os espécimes, em ambos os antímeros, as artérias esternoclaviculares, axilares e torácicas internas e os troncos peitorais e de forma inconstante as artérias esternoclaviculares acessórias e os ramos pericárdicos. As artérias esternoclaviculares surgiram no antímero direito em 27 (90,0% ± 6,0) e no antímero esquerdo em 25 animais (83,3% ± 7,5). Encontrou-se ramos pericárdicos em 7 animais (23,3% ± 8,5) no antímero direito, em 11 animais (36,7% ± 9,6) no antímero esquerdo e em 4 animais (13,3% ± 6,8) em ambos os antímeros. O tronco peitoral era o ramo terminal da artéria subclávia e dividiu-se nas artérias peitorais cranial e caudal. Não se observou diferenças significativas entre machos e fêmeas quando ao padrão vascular dos dados analisados. | It was studied the origin and the ramification of the branches from brachiocephalic trunk in 30 goose (Anser domestica), adults 21 males and 09 females. The animals, after sacrifice, were injected in the squiatic artery with latex Neoprene solution and fixed in formalin 10% aqueous solution. The brachiocephalic trunks, right and left, arise from aorta, after its emergency in left atria and divided in right and left subclavian and common carotid arteries. The subclavian arteries originated constantly, in both antimeres, the sternoclavicularis, axilar and internal thoracic arteries and the pectoral trunks and inconstantly the accessory esternoclavicularis artery and the pericardium branches. The sternoclavicularis artery arises in the right antimere in 27 (90,0% ± 6,0) and in the left antimere in 25 animals (83,3% ± 7,5). There were the pericardium branches in 7 animals (23,3% ± 8,5) in right antimere, in 11 animals (36,7% ± 9,6) in left antimere and in 4 animals (13,3% ± 6,8) in both sides. The pectoral trunk is a terminal branch from subclavian artery and divided in cranial and caudal pectoral arteries. It weren't observed significant differences between males and females in vascular pattern of the data analyzed.
Afficher plus [+] Moins [-]Structural features of the epididymal region of the domestic duck (Anas plathyrynchos) | Características estruturais da região epididimária do pato doméstico (Anas plathyrynchos) Texte intégral
2004
Karina Simões | Antônio Marcos Orsi | Silvana Martinez Baraldi Artoni | Claudinei da Cruz | Bruno César Schimming | Patrícia Fernanda Felipe Pinheiro
The epididymal region of the domestic duck is composed by efferent ductules, whose histotopology was characterized by the proximal and distal ductules and sequentially by the epididymal duct. The epithelial lining of the efferent ductules was ciliated pseudostratified and formed by columnar cells. Also the ducts epididymidis epithelium was pseudostratified but non-ciliated. Concerning the histomorphometric analysis, the epithelial height mean was significantly greater in the distal efferent ductules, differing from the lower epithelium height mean observed in proximal efferent ductules and epididymal duct. The maximum and minimum diameter mean were significantly greater in the proximal efferent ductules, comparatively to the same diameter means of the other ductules. | A região epididimária do pato doméstico era composta pelos ductúlos eferentes, os quais hitotopologicamente foram caracterizados como dúctulos eferentes proximal e distal e, sequencialmente, pelo ducto epididimal. O epitélio dos dúctulos eferentes era pseudo-estratificado, formado por células colunares. O epitélio dos ductos epididimários mostrou-se também pseudo-estratificado, mas não ciliado. De acordo com as análises histomorfométricas, a média da altura epitelial foi significativamente maior nos dútulos esferentes distais, diferindo das baixas médias de altura epitelial observadas nos dúctulos eferentes proximais e ducto epididimal. A média dos diâmetros máximos e mínimos foi significativamente maior nos dúctulos eferentes proximais, comparativamente as médias dos mesmos diâmetros dos outros dúctulos.
Afficher plus [+] Moins [-]