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BULLFROG HEMOGRAM UNDER MANAGEMENT STRESS Ciência e Agrotecnologia
Teixeira,Patrícia Coelho; Vicentini,Irene Bastos Franceschini; Ferreira,Claudia Maris; França,Fernanda Menezes; Bordon,Isabela Cristina Antunes da Costa; Ranzani-Paiva,Maria José Tavares.
Stress is one of the major obstacles in frog culture and can be caused by factors such as inappropriate farming systems; inadequate management among other situations. The objective of the present study was to assess the hemogram, erythrogram and leukogram of bullfrogs (L. catesbeianus) when exposed to stress caused by different types of management: density and handling (manipulation), developed in the laboratory and repeated in the field for the appropriate comparisons in a experimental period of 30 days. The density experiment was conducted with four treatments: 70 animals m-2 (D70); 100 animals m-2 (D100), Control; 150 animals m-2 (D150) and 200 animals m-2 (D200), with 10, 14, 21 and 28 animals/box in the laboratory, respectively. Each treatment was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: L. catesbeianus; Density; Handling; Physiological response; Hematology.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200154
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Morphology and Histochemistry of the Liver of Carnivorous Fish Hemisorubim platyrhynchos International Journal of Morphology
Faccioli,Claudemir Kuhn; Chedid,Renata Alari; Bombonato,Maria Terezinha Siqueira; Vicentini,Carlos Alberto; Vicentini,Irene Bastos Franceschini.
The aim of this study was to characterize the normal structure of the liver of Hemisorubim platyrhynchos, a carnivorous freshwater catfish found in Neotropical region, using gross anatomy, histology and histochemistry. Anatomically, the liver presents C-shaped and only two lobes: smaller right and bigger left. The gallbladder is located in right lobe and shows elongated shaped. Histological analysis demonstrated that the hepatic parenchyma is made of two hepatocytes plates surrounded by sinusoids. The hepatocytes are polygonal-shaped cells, with spherical nucleus and a dark prominent nucleolus. The cytoplasm presents large amount of lipids and glycogen deposits PAS positives. There are no hepatic lobules or portal triads. Bile ducts are lined by columnar...
Tipo: Journal article Palavras-chave: Anatomy; Histology; Hepatocytes; Extrahepatic Pancreas; Teleost.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200055
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Ultrastructural Aspects of Spermatogenesis in Phalloceros caudimaculatus (Teleostei, Poeciliidae) International Journal of Morphology
Vicentini,Carlos Alberto; Muñoz,Mario Esteban; Vicentini,Irene Bastos Franceschini.
The aim of the present study was to analyze the ultrastructural aspects of spermatogenesis in Phalloceros caudimaculatus, during cell proliferation. The parenchyma is organized morphologically as lobular restricted spermatogonial testis. Spermiogenesis in this species is characterized by four morphological stages of development (spermatids S1 through S4). The mature spermatids and spermatozoa heads are situated at the periphery of the cyst surrounded by the cytoplasm of the Sertoli cells. The germ cell's ultrastructure and spermatogenesis in P. caudimaculatus are very similar to that of other poeciliids.
Tipo: Journal article Palavras-chave: Spermatogenesis; Ultrastructure; Poeciliidae; Phalloceros caudimaculatus.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300047
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