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| Registros recuperados: 25 | |
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| Srivastav,S.K.; Srivastav,A.K.. |
| Adult Channa punctatus murrels of both sexes (60-80 g) were collected locally from Ramgarh Lake during the second week of every month (10 individuals of each sex/month) throughout the year. Blood samples were collected and analyzed for serum calcium and phosphate levels by the methods of Trinder (1960) and Fiske and Subbarow (1925), respectively. Gonads were fixed to judge the state of maturation of the fish. Males exhibited no change in serum calcium levels throughout the year in correlation with testicular maturation. However, serum phosphate levels exhibited a rise in correlation with the increased gonadosomatic index. Females showed marked seasonal changes in serum calcium and phosphate levels which were associated with ovarian maturation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium; Inorganic phosphate; Reproduction; Teleost; Vitellogenesis. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000800006 |
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| Faganello,F.R.; Mattioli,R.. |
| The present study investigated the involvement of H(1) histaminegic receptor on the acquisition of inhibitory avoidance in Carassius auratus submitted to telencephalic ablation. The fish were submitted to telencephalic ablation 5 days before the experiment. The inhibitory avoidance procedure included 1 day for habituation, 3 days for training composed of 3 trials each (1st day: T1, T2, T3; 2nd day: 2T1, 2T2, 2T3; 3rd day: 3T1, 3T2, 3T3) and 1 day for test. On training days, the fish were placed in a white compartment, after 30 s the door was opened. When the fish crossed to a black compartment, a weight was dropped (aversive stimuli). Immediately after the third trial, on training days, the fish received, intraperitoneally, one of the pharmacological... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Chlorpheniramine; Inhibitory avoidance; Telencephalic ablation; Teleost. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000500008 |
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| Edeyer, Anaick; De Pontual, Helene; Payan, P; Troadec, Herve; Severe, Armelle; Mayer-gostan, N. |
| We studied the circadian variations of the ionic composition ([Na+], [K+], [Cl-]), total CO2 ([tot CO2]), and protein concentration ([protein]) in the plasma and endolymph in the distal and proximal sides of the sacculus in the turbot Psetta maxima. Daily variations in total plasma calcium ([tot Ga]) were also recorded. Significant diurnal fluctuations occurred in most parameters and the spatial heterogeneity of the endolymph composition was maintained throughout a 24 h period. The main parameters implicated in otolith calcification, endolymph [tot CO2] and endolymph [protein], fluctuated diurnally, [tot CO2] was highest and [protein] lowest at night; the relative concentrations were reversed during the day. The inverse, alternating relationship of maximal... |
| Tipo: Text |
Palavras-chave: Daily cycle; Endolymph; Otolith; Chemical composition; Teleost. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00000/10572/7603.pdf |
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| Alix, Maud; Gasset, Eric; Bardon-albaret, Agnes; Noel, Jean; Pirot, Nelly; Perez, Valérie; Coves, Denis; Saulnier, Denis; Lignot, Jehan-hervé; Cucchi, Patricia N.. |
| Background Ephippidae fish are characterized by a discoid shape with a very small visceral cavity. Among them Platax orbicularis has a high economic potential due to its flesh quality and flesh to carcass ratio. Nonetheless, the development of its aquaculture is limited by high mortality rates, especially due to Tenacibaculum maritimum infection, occurring one to three weeks after the transfer of fishes from bio-secure land-based aquaculture system to the lagoon cages for growth. Among the lines of defense against this microbial infection, the gastrointestinal tract (GIT) is less studied. The knowledge about the morphofunctional anatomy of this organ in P. orbicularis is still scarce. Therefore, the aims of this study are to characterize the GIT in... |
| Tipo: Text |
Palavras-chave: Digestive system; Tenacibaculosis; Mucous; Osmoregulation; Absorption; Batfish; Teleost. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00652/76421/77485.pdf |
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| Millan, Debora Cristina; Centro Universitário Central Paulista; Shiogiri, Natália Sayuri; Universidade Federal de São Carlos; Souza, Naiara Elisabete da Silva de; Universidade Federal de São Carlos; Silva, Hugo Ribeiro da; Universidade Federal de São Carlos; Fernandes, Marisa Narciso; Universidade Federal de São Carlos. |
| Natural insecticides derived from plant extracts have been used as an alternative to synthetic products in order to reduce environmental contamination. The present study aimed to examine the effects of Fumydro®, a natural insecticide based in the tobacco plant Nicotiana tabacum, on the Nile tilapia (Oreochromis niloticus) by determining the 48-h LC50 and evaluating their effects on hematological variables. Adult specimens of O. niloticus were exposed to four Fumydro® concentrations (200, 300, 400 and 500 μL L-1). The 48-h LC50 of Fumydro® was determined as 370 ± 50 μL L-1. Surviving fish showed increasing in the red blood cells, hemoglobin concentration, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration. The thrombocytes did not... |
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Palavras-chave: Ecologia toxicity; Erythrocytes; Leukocytes; Teleost; Thrombocytes 2.05.03.00-8. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131 |
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| Montes, Caroline da Silva; Ferreira, Maria Auxiliadora Pantoja; Santos, Simone do Socorro Damasceno dos; Rocha, Rossineide Martins. |
| In this study, histological, ultrastructural, and immunohistochemical observations of the gill tissue of two fish species (Plagioscion squamosissimus and Lithodoras dorsalis) were used as biomarkers to assess the ecological conditions of an estuary in the Amazon delta, by relating the health status of the fishes to environmental quality. The gill tissue was analyzed both qualitatively and semi-quantitatively. Marked differences in the type and severity of lesions were verified between species and among study sites. A variety of severe damages were confirmed histologically in specimens from the two impacted areas (B and C), including aneurysms, epithelial lifting, and intense hyperplasia. Electron microscopy and immunohistochemical analyses also revealed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.06.03.00-2; 2.10.07.00-4; 2.11.01.00-0 histology; TUNEL; Teleost; Barcarena; Industrial effluents ecotoxicologia. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24541 |
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| Blondeau-bidet, Eva; Hiroi, Junya; Lorin-nebel, Catherine. |
| Ion uptake mechanisms are diverse in fish species, certainly linked to duplication events that have led to the presence of a multitude of paralogous genes. In fish, Na+ uptake involves several ion transporters expressed in different ionocyte subtypes. In the European sea bass Dicentrarchus labrax, several key transporters potentially involved in Na+ uptake have been investigated in seawater (SW) and following a 2 weeks freshwater (FW) acclimation. Using gel electrophoresis, we have shown that the Na+/H+-exchanger 3 (nhe3, slc9a3) is expressed in gills and kidney at both salinities. Quantitative realtime PCR analysis showed a significantly higher nhe3 expression in fresh water (FW) compared to SW. Its apical localization in a subset of gill ionocytes in... |
| Tipo: Text |
Palavras-chave: Teleost; Osmoregulation; Ion transporters; Na+ uptake; NHE3; NCC2. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00485/59618/62638.pdf |
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| Payan, P; Kossmann, Hans; Watrin, A; Mayer-gostan, N; Boeuf, Gilles. |
| Ionic (Na+, K+, Cl-, PO43-, pH), total CO2, total calcium and protein concentrations in the plasma and endolymph of the inner ear were compared in trout Oncorhynchus mykiss and turbot Scophthalmus maximus. In both species, saccular endolymph was characterized by high levels of K+ and total CO2 and in trout by an alkaline pH, The kinetic characteristics of proton secretion across the saccular epithelium of trout were investigated using a titration technique in which isolated saccules were mounted as closed sacs. The rate of proton secretion depends strongly on the pH of the Ringer's solution and secretion stops at a pH below 7.2, Proton secretion is driven by an energy-dependent mechanism involving basolateral ouabain-sensitive Na+/K+ exchangers. Proton... |
| Tipo: Text |
Palavras-chave: Teleost; Inner ear; Saccular epithelium; Proton secretion; Otolith; Biocalcification; Trout; Oncorhynchus mykiss; Turbot; Scophthalmus maximus. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00336/44695/44987.pdf |
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| 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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| Rizzo,Elizete; Moura,Thais F.C.; Sato,Yoshimi; Bazzoli,Nilo. |
| Cytological and cytochemical studies were carried out to investigate the surface characteristics of oocytes of four teleost species from the São Francisco river. The fishes were submitted to hypophysation at the Três Marias Hybrobiology and Fishculture Station, Minas Gerais, Brazil, in January 1996. Postspawning, oocytes of the curimatãs Prochilodus affinis, Prochilodus marggravii and dourado Salminus brasiliensis were surrounded by a thick, three-layered zona pellucida with radial striae. The surface of spawned oocytes of the surubim, Pseudoplatystoma coruscans, was comprised of mucous coat located externally to a thin, two-layered and striated zona pellucida. Oocyte activation during fertilization, lead to cortical reaction, formation of a perivitelline... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zona pellucida; Oocyte surface; Mucous coat; Teleost; Micropyle. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100005 |
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| Sevilla, Rafael G.; Diez, Amalia; Noren, Michael; Mouchel, Olivier; Jerome, Marc; Verrez-bagnis, Veronique; Van Pelt, Hilde; Favre Krey, Laurence; Krey, Grigorios; Bautista, José M.. |
| This report describes a set of 21 polymerase chain reaction primers and amplification conditions developed to barcode practically any teleost fish species according to their mitochondrial cytochrome b and nuclear rhodopsin gene sequences. The method was successfully tested in more than 200 marine fish species comprising the main Actinopterygii family groups. When used in phylogenetic analyses, its combination of two genes with different evolutionary rates serves to identify fish at the species level. We provide a flow diagram indicating our validated polymerase chain reaction amplification conditions for barcoding and species identification applications as well as population structure or haplotyping analyses, adaptable to high-throughput analyses. |
| Tipo: Text |
Palavras-chave: Teleost; Rhodopsin; PCR primers; Mitochondrial cytochrome b; Fish; DNA barcoding. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3034.pdf |
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| Chiarello, Marlene; Auguet, Jean-christophe; Bettarel, Yvan; Bouvier, Corinne; Claverie, Thomas; Graham, Nicholas A. J.; Rieuvilleneuve, Fabien; Sucre, Elliot; Bouvier, Thierry; Villeger, Sebastien. |
| Background: The surface of marine animals is covered by abundant and diversified microbial communities, which have major roles for the health of their host While such microbiomes have been deeply examined in marine invertebrates such as corals and sponges, the microbiomes living on marine vertebrates have received less attention. Specifically, the diversity of these microbiomes, their variability among species, and their drivers are still mostly unknown, especially among the fish species living on coral reefs that contribute to key ecosystem services while they are increasingly affected by human activities. Here, we investigated these knowledge gaps analyzing the skin microbiome of 138 fish individuals belonging to 44 coral reef fish species living in the... |
| Tipo: Text |
Palavras-chave: Tropical; Teleost; Microbiota; Phylogenetic diversity; Phylosymbiosis; Phylogenetic signal. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56565/74934.pdf |
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| Registros recuperados: 25 | |
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