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| Registros recuperados: 209 | |
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| Almeida,Ana Laura; Kishimoto,Raquel Gualda; Carbayo,Fernando. |
| The Brazilian Atlantic Forest harbors the world's richest areas of land planarians (Platyhelminthes: Tricladida). Nevertheless, the number of undiscovered species from this biological unit remains seemingly high. Herein we describe Geoplana piriana Almeida & Carbayo, sp. nov. from the state of Rio de Janeiro, and Geoplana tingauna Kishimoto & Carbayo, sp. nov. from the state of Santa Catarina. Each species shows a dorsum with a unique color pattern among Geoplaninae species. Their internal morphology also differs: G. piriana sp. nov. shows a unique combination of features, including an extrabulbar, non-bifurcated prostatic vesicle, a non-folded male atrium, a horizontal, cylindrical penis papilla, a female atrium anteriorly narrowed, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flatworms; Geoplaninae; Histology; Taxonomy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000500006 |
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| Senarat,Sinlapachai; Kettratad,Jes; Kaneko,Gen; Kamnurdnin,Thatpon; Sudtongkong,Chanyut. |
| ABSTRACT The central nervous system (CNS) of Teleostei is a complex system of self-governance and its morphology is reflected in the physiological and reproductive behaviors. The Indo-Pacific seahorse, Hippocampus barbouri Jordan & Richard son, 1908, is a new candidate species for aquaculture in Thailand. In this study, we investigated the brain morphology of H. barbouri across various developmental windows. Light microscopic observations of adult brains revealed a large optic tectum in the mesencephalon, whereas the cerebral hemispheres and the cerebellum are of medium size. The detailed brain structures were generally similar to those of other teleosts; however, only five distinct layers were present in the optic tectum, including the stratum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histology; Seahorse; Spinal cord; Thailand. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100327 |
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| Vitonis,João E.V.V.; Zaniratto,Cristiane P.; Machado,Fabrizio M.; Passos,Flávio D.. |
| Despite the great importance of the siphons for infaunal bivalves, only a few studies have examined their tissues using histology techniques or scanning electron microscopy. In the present study, the siphons of Tellina lineata Turton, 1819 and Macoma biota Arruda & Domaneschi, 2005 were investigated. The siphon walls are composed by a series of muscle sheets of longitudinal ("L"), circular ("C") and radial ("R") fibers, with a clear pattern common to both species: there is a main median longitudinal layer (Lm), and two peripheral circular layers, one inner (Ci) and one outer (Co), near the epithelia. A median circular layer (Cm) separates an internal (Lmi) from an outer (Lmo) median longitudinal layer. Further, the Co is split by a thin outer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciliated receptors; Histology; Musculature; Tellinoidea. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000300005 |
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| Souza,Geysa Marinho de; Monteiro-Neto,Cassiano; Costa,Marcus Rodrigues da; Bastos,Ana Luiza; Martins,Raquel Rennó Mascarenhas; Vieira,Francyne Carolina dos Santos; Andrade-Tubino,Magda Fernandes de; Tubino,Rafael de Almeida. |
| ABSTRACT The bluefish, Pomatomus saltatrix (Linneus 1766) is captured by industrial, artisanal, and recreational fisheries throughout its distribution range. The reproductive biology of P. saltatrix in the southwestern Atlantic was studied using 1,102 specimens captured by the Brazilian commercial fleet between March 2014 and December 2015. The recruitment period was identified from records of juveniles in experimental beach seine hauls carried out on sandy beaches in the external sector of Guanabara Bay for four years (2012-2015). Based on the reproductive indices and on the macro- and microscopic analyses of the gonads, spawning peaks were identified in autumn and spring. The size at first maturity was estimated at 35.5, 38.3, and 37.4 cm for females,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fecundity; Histology; Oocyte development; Reproductive dynamics; Spawning seasons; Young-of-the-year. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702021000100301 |
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| Alves, Luiz Fernando de Souza; Saravy, Taiany Miranda; Baldo, Grace Alessandra Araújo; Gabriel, Andrea Maria de Araújo; Cavichiolo, Fabiana. |
| To pathological assessments or recognition of changes in the morphology of these is necessary knowledge of a normal morphological pattern, being this then the goal of this study. Were collected 20 animals (Piaractus mesopotamicus), from cultivation environments the region of Grande Dourados, with total length of 35 cm and 750 g approximately. During data collection, the animals were anesthetized with benzocaine, euthanized and dissected for macroscopic evaluation of organs "in situ". After, collected the gills, fixed in Bouin solution and stained by the usual method Hematoxylin-eosin and alcian blue technique+ PAS. Macroscopically it was observed that these had brilliant crimson red coloration, located internally, protected by beeswax, with numerous traces... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histology; Gill morphology; Teleosts.. |
| Ano: 2017 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14316 |
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| Chalita, Maria Carolina Catai; Matera, Julia Maria; Alves, Maria Teresa de Seixas; Longatto Filho, Adhemar. |
| Over the course of 17 months, non-aspiration fine needle (21-27G) cytology was performed on 213 dogs with 300 skin and soft tissue tumors. The smears were air dried and stained by the Rosenfeld method. There were 119 males (56%) and 94 females (44%), the majority of at least 6 years of age (75%). Mongrel dogs were over-represented (n=74), followed by Boxer (n=21), Poodle (n=18), German Shepard (n=15), Cocker Spaniel (n=12), and Doberman Pinscher (n= 11). In 40% of the cases (85 dogs, 117Iesions), histological evaluation was available to compare with the cytologic results. In this group, 77 specimens were benign (22 non-neoplastic and 55 neoplastic) and 40 malignant. Tumors were represented by 19%non-neoplastic lesions, 36% epithelial tumors, 30%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neoplasms; Skin; Citology; Histology; Dogs Neoplasia. Piel. Citología. Histología. Perros neoplasia; Pele; Citologia; Histologia; Cães. |
| Ano: 2002 |
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3270 |
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| Rodrigues,Ana Paula Oeda; Pauletti,Patricia; Kindlein,Liris; Delgado,Eduardo Francisquine; Cyrino,José Eurico Possebon; Machado-Neto,Raul. |
| Histological responses of the intestine are key for evaluating nutritional value of feed ingredients, since the organ is not only the chief site of feed digestion and nutrient absorption but also plays an important immunological function. Histomorphological alterations were evaluated in the intestine of juvenile striped catfish, Pseudoplatystoma fasciatum, fed diets containing 0 (control), 10 or 20% inclusion of lyophilized bovine colostrum (LBC), as source of protein or bioactive peptides, for either 30 or 60 days. Fish fed 20LBC presented at 60d a distinct pattern of macrophages and, some of them, higher number of vacuoles in rectum mucosa. The thickness of the muscle layer (TML) in fish fed diets with LBC was higher in the first portion of medium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gut absorption; Histology; Mammal protein; Lyophilized bovine colostrum; Striped catfish. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500005 |
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| Mesquita,Eliana de Fátima Marques de; Abreu,Marta Guimarães de; Lima,Francisco Carlos de. |
| Gametogenic and histochemical aspects of an edible bivalve, lphigenia brasiliana (Lamarek, 1818) from Itaipu Lagoon, Niterói, State of Rio de Janeiro, were studied. Between May 1998 and October 1999 a total of 120 clams were picked up. Samples of 10 animals were collected once a month. Specimens were fixed in Bouin's fixative for 4 hours or less and transferred to 10% formalin for 24 hours. The shell lenght has been measured with the valves lightly opened to permit the penetration of fixative solution deeply in the tissues. Transverse sections including digestive diverticula, mantle, gills, gonad and foot were obtained from the total body. After fixative treatment, tissues sections were embedded in paraffin, cut routinely at 5 µm and stained with Harris's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gametogenic cycle; Histology; Special-staining methods; Iphigenia brasiliana; Ltaipu Lagoon; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200023 |
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| Oliveira Ribeiro,Ciro Alberto de; Fanta,Edith. |
| The digestive system of Trichomycterus brasiliensis (Lütken, 1874), a small sized tropical Teleostean fish widely distributed in South America, was studied. Tissue samples were prepared for light and scanning electron microscopy (SEM). Trichomycterus brasiliensis shows stratified esophagus epithelium with taste buds and goblet cells with neutral and acid mucus at the anterior region. The stomach is caecal, presenting a pyloric valve with neutral mucus cells. At the terminal portion it is surrounded by a thick muscular wall. The intestine shows two loops; the epithelium is single columnar, with acid and neutral mucus in goblet cells. Multicellular intestinal glands are absent. Granular cells are often seen in the mucosa, less in the submucosa but were not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Teleostei; Digestive tube; Histology. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400007 |
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| Favaro,Luís Fernando; Lopes,Sabine de C. G.; Spach,Henry Louis. |
| The present study investigated the reproductive biology of silverside, Atherinella brasiliensis (Quoy & Gaimard, 1825) in a tidal flat of Paranaguá Bay, littoral of Paraná State, Brazil. Fish were captured monthly from November 1998 to October 1999 by the mean of a seine-net. For each individual, total body length, total weight, sex, and gonadal weight were recorded. Gonadal development stages were also defined based on the histological examination of the ovaries and on the visual aspects of the testes. It was defined that the reproductive period of A. brasiliensis extends from June to December, based on he analyses of individual gonadosomatic index (GSI) values distribution in relation to the sampling periods, on the monthly variation of the GSI... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histology; Reproductive biology; Tidal flat. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000300022 |
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| Lello,Edy de; Vieira,Ana Maria. |
| Dermatobia hominis (Linnaeus, 1781) midgut is internally lined by an epithelium of polytenic cells, some low others prismatic with well developed brush border. Their apical portion are enlarged by secretory vesicles, forming button-like structures that are pinched off to the lumen, some accompained by the nucleus characterizing apocrine and holocrine secretions. This epithelium is gradually renewed by small, non polytenic regenerative cells, found scattered at its basal portion. At the end of the third instar the metamorphosis begins. The epithelial cells present signs of degeneration and at the first day of pupation the regenerative cells increase in number. By the 5th day of pupation these regenerative cells, besides being increased in number,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Dermatobia hominis; Midgut; Metamorphosis; Histology; Post-embryonic development. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100009 |
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| Leal-Zanchet,Ana Maria; Souza,Simone Aparecida de. |
| Choeradoplana iheringi Graff, 1899 was described on specimens proceeding from Taquara, Rio Grande do Sul, Brazil. Afterwards, RIESTER (1938), MARCUS (1951) and FROEHLICH (1955) analyzed specimens from southeast Brazil, identifying them as C. iheringi. In this study samples of C. iheringi from São Francisco de Paula, a site next to the type-locality, and specimens from the Southeast (Salesópolis, state of São Paulo), are comparatively analyzed. It was observed that the external morphology of the specimens from São Francisco de Paula and from Salesópolis is concordant with the original description of C. iheringi, as well as that by RIESTER (1938) and MARCUS (1951). The pharynx is better designated as bell-form, and not collar-form as described by GRAFF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geoplaninae; Taxonomy; Anatomy; Histology. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000300026 |
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| Vieira,Ana Maria; Lello,Edy de. |
| Foregut in D. hominis (Linnaeus Jr., 1781) as the majority of the larval Diptera somatic tissue, is made up of polytenic cells, and grows at the expenses of the polytenization of its nuclei followed by the increase in size of each cell. The oesophagus, of ectodermic origem, is interiorly covered by a chitinous squamous epithelium that rests upon a very thin basal lamina. This sheet is surrounded by thick muscle bundles. The oesophagus intussuscepts the midgut forming the cardia. The cardia, with three epithelial layers: two internal ones, of ectodermal origin and one external of endodermic origin. At the anterior portion of the cardia, between these two types of epithelium, there is a cluster of small, non polytenic cells, forming the imaginal disk of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Dermatobia hominis; Foregut; Cardia; Metamoiphosis; Histology; Post-embryonic development. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100008 |
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| Registros recuperados: 209 | |
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