Base de dados : MEDLINE
Pesquisa : B01.050.150.900.493.817 [Categoria DeCS]
Referências encontradas : 56 [refinar]
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[PMID]:24708116
[Au] Autor:Lu C; Gu Y; Li C; Cheng L; Sun X; Tang F
[Ad] Endereço:a National Local Joint Engineering Laboratory for Freshwater Fish Breeding , Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences , Harbin , P.R. China.
[Ti] Título:Complete mitochondrial genome of clearhead icefish Protosalanx hyalocranius (Salmoniformes: Salangidae).
[So] Source:Mitochondrial DNA A DNA Mapp Seq Anal;27(1):514-5, 2016.
[Is] ISSN:2470-1408
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, we sequenced and determined the complete mitochondrial genome of clearhead icefish (Protosalanx hyalocranius). The circular mitochondrial genome (16,693 bp) contained 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and 1 control region. All genes were encoded on the heavy strand with the exception of ND6 and eight tRNA genes.
[Mh] Termos MeSH primário: Genoma Mitocondrial/genética
Salmoniformes/genética
Análise de Sequência de DNA
[Mh] Termos MeSH secundário: Animais
DNA Mitocondrial/genética
Genes de RNAr/genética
Anotação de Sequência Molecular
Dados de Sequência Molecular
Fases de Leitura Aberta/genética
RNA de Transferência/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (DNA, Mitochondrial); 9014-25-9 (RNA, Transfer)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:151215
[Lr] Data última revisão:
151215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140409
[St] Status:MEDLINE
[do] DOI:10.3109/19401736.2014.905834


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[PMID]:25995172
[Au] Autor:Brzuzan P; Kramer C; Lakomiak A; Jakimiuk E; Florczyk M; Wozny M
[Ad] Endereço:Department of Environmental Biotechnology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, ul. Sloneczna 45G, 10-709, Olsztyn, Poland. brzuzan@uwm.edu.pl.
[Ti] Título:c-myc in whitefish (Coregonus lavaretus): structure, expression, and insights into possible posttranscriptional regulatory mechanism.
[So] Source:Fish Physiol Biochem;41(5):1155-71, 2015 Oct.
[Is] ISSN:1573-5168
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:c-myc has a crucial function in growth control, differentiation, and apoptosis of vertebrate cells. Despite the important role of c-myc in mediating the biological effects, studies of c-myc gene expression and factors that control it in organisms other than mammals, such as fish, have been rare. In the current study, we asked whether c-myc mRNA of whitefish, a feasible organism for pollution monitoring in aquatic systems and a model in toxicological research, contains activity sites for regulatory motifs in its 5'- and 3'-UTRs, similar to those found in mammals. We were particularly interested in whether miRNA-34, a known negative regulator of c-myc's in mammals, is able to regulate c-myc in fish. To answer these questions, we determined the mRNA sequence of whitefish c-myc and inferred the structure of the protein that it codes for. We found that the active sites of mRNA and structures of the inferred c-myc protein are similar to those found in mammals and other fish. Remarkably, levels of c-myc mRNA expression were very high in ovaries compared to other tissues of whitefish, thus corroborating previous data in fish. Using bioinformatic searches on c-myc 3'-UTR, we confirmed the presence of two miRNA-34a (miR-34a) response elements. Luciferase reporter assay showed that activity of reporters containing either the miR response elements or entire c-myc 3'-UTR was significantly reduced (p < 0.001) by ectopic expression of miR-34a. Therefore, we further investigated possible involvement of miR-34a in c-myc gene silencing by profiling the expression of both genes in livers of whitefish treated for 8, 24, 48 h with MC-LR, a potent c-myc inducer in mammals. Although the difference was only significant at p = 0.08, the expression of c-myc mRNA in challenged whitefish after 24 h of the treatment was notably higher than that in livers of control fish. Concurrently, we noticed slight but significant up-regulation of miR-34a after 24 and 48 h of the challenge (p < 0.05); however, we found no significant correlation of the c-myc mRNA levels and miR-34a expression. Together, these results suggest that miR-34a might regulate c-myc gene expression in whitefish liver; however, their involvement in MC-LR hepatotoxicity should be clarified in future studies.
[Mh] Termos MeSH primário: Regulação da Expressão Gênica/fisiologia
Genes myc/fisiologia
Processamento Pós-Transcricional do RNA/fisiologia
Salmoniformes/metabolismo
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Sequência de Bases
Clonagem Molecular
Genes myc/genética
Células HEK293
Seres Humanos
MicroRNAs/genética
MicroRNAs/metabolismo
Microcistinas/toxicidade
Dados de Sequência Molecular
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (MicroRNAs); 0 (Microcystins); EQ8332842Y (cyanoginosin LR)
[Em] Mês de entrada:1606
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150522
[St] Status:MEDLINE
[do] DOI:10.1007/s10695-015-0077-2


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[PMID]:23789402
[Au] Autor:Flerova EA; Balabanova LV
[Ti] Título:[Ultrastructure of granulocytes of bony fishes (orders Salmoniformes, Cypriniformes, Perciformes)].
[So] Source:Zh Evol Biokhim Fiziol;49(2):162-71, 2013 Mar-Apr.
[Is] ISSN:0044-4529
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Analysis of data on utrastructure of granulocytes of freshwater and marine bony fish of orders Salmoniformes, Cypriniformes, and Perciformes showed that in all studied species there were revealed two types of granulocytes - neutrophils and eosinophils. The exception was the bluefish Pomatomus saltatrix L. whose pronephros hemopoietic tissue was found to contain one type of the granulocytic line - neutrophils. The identification parameters of granular leukocytes are specific granules filling the cytoplasm. The main form of specific granules in neutrophils of bony fish of various phylogenetic groups is an elongated granule with different distribution of fibrils or a granule that has crystalloid formed from fibrils. The main form of eosinophil granules - large, electron-dense, homogenous.
[Mh] Termos MeSH primário: Cipriniformes/anatomia & histologia
Granulócitos/ultraestrutura
Rim Cefálico/ultraestrutura
Perciformes/anatomia & histologia
Salmoniformes/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Cipriniformes/sangue
Cipriniformes/classificação
Eosinófilos/citologia
Eosinófilos/ultraestrutura
Granulócitos/citologia
Hematopoese Extramedular
Contagem de Leucócitos
Microscopia Eletrônica
Neutrófilos/citologia
Neutrófilos/ultraestrutura
Perciformes/sangue
Perciformes/classificação
Filogenia
Salmoniformes/sangue
Salmoniformes/classificação
[Pt] Tipo de publicação:ENGLISH ABSTRACT; JOURNAL ARTICLE
[Em] Mês de entrada:1307
[Cu] Atualização por classe:130624
[Lr] Data última revisão:
130624
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130625
[St] Status:MEDLINE


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[PMID]:22776906
[Au] Autor:Dochtermann NA; Peacock MM
[Ad] Endereço:Department of Biology, University of Nevada, Reno, Nevada, USA. ned.dochtermann@gmail.com
[Ti] Título:Inter- and intra-specific patterns of density dependence and population size variability in Salmoniformes.
[So] Source:Oecologia;171(1):153-62, 2013 Jan.
[Is] ISSN:1432-1939
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Population dynamics are typically affected by a combination of density-independent and density-dependent factors, the latter of which have been conceptually and theoretically linked with how variable population sizes are over time-which in turn has been tied to how prone populations are to extinction. To address evidence for the occurrence of density dependence and its relationship with population size variability (pv), we quantified each of these for 126 populations of 8 species of Salmoniformes. Using random-effects models, we partitioned variation in the strength of density dependence and the magnitude of pv between and within species and estimated the correlation of density dependence and population size variability at both the between- and within-species levels. We found that variation in the strength of density dependence was predominately within species (I(2) = 0.12 [corrected] variation in population size variability was distributed both between and within species (I(2) = 0.40). Contrary to theoretical and conceptual expectations, the strength of density dependence and the magnitude of population size variability were positively correlated at the between species level (r = 0.90), although this estimate had 95 % credibility intervals (Bayesian analogues to confidence intervals) that overlapped zero. The within-species correlation between density dependence and population size variability was not distinguishable from zero. Given that density dependence for Salmoniformes was highly variable within species, we next determined the joint effects of intrinsic (density-dependent) and extrinsic (density-independent) factors on the population dynamics of a threatened salmonid, the Lahontan cutthroat trout (Oncorhynchus clarkii henshawi). We found that density-dependent and -independent factors additively contributed to population dynamics. This finding suggests that the observed within-species variability in density dependence might be attributable to local differences in the strength of density-independent factors.
[Mh] Termos MeSH primário: Tamanho Corporal
Salmoniformes/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Modelos Teóricos
Densidade Demográfica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1303
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120711
[St] Status:MEDLINE
[do] DOI:10.1007/s00442-012-2402-0


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[PMID]:22790003
[Au] Autor:Ruxton GD
[Ad] Endereço:School of Biology, University of St Andrews, St Andrews KY16 9TH, United Kingdom. Graeme.Ruxton@glasgow.ac.uk
[Ti] Título:Group dynamics: predators and prey get a little help from their friends.
[So] Source:Curr Biol;22(13):R531-3, 2012 Jul 10.
[Is] ISSN:1879-0445
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Transfer of information about predatory attacks between individuals allows schooling or flocking prey to evade predation without disrupting group integrity. But, predators can mitigate this effect by working together themselves.
[Mh] Termos MeSH primário: Peixes/fisiologia
Comportamento Predatório
[Mh] Termos MeSH secundário: Animais
Salmoniformes/fisiologia
Comportamento Social
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1302
[Cu] Atualização por classe:120713
[Lr] Data última revisão:
120713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120714
[St] Status:MEDLINE
[do] DOI:10.1016/j.cub.2012.05.013


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[PMID]:22683262
[Au] Autor:Handegard NO; Boswell KM; Ioannou CC; Leblanc SP; Tjøstheim DB; Couzin ID
[Ad] Endereço:Institute of Marine Research, 5817 Bergen, Norway. nilsolav@imr.no
[Ti] Título:The dynamics of coordinated group hunting and collective information transfer among schooling prey.
[So] Source:Curr Biol;22(13):1213-7, 2012 Jul 10.
[Is] ISSN:1879-0445
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Predator-prey interactions are vital to the stability of many ecosystems. Yet, few studies have considered how they are mediated due to substantial challenges in quantifying behavior over appropriate temporal and spatial scales. Here, we employ high-resolution sonar imaging to track the motion and interactions among predatory fish and their schooling prey in a natural environment. In particular, we address the relationship between predator attack behavior and the capacity for prey to respond both directly and through collective propagation of changes in velocity by group members. To do so, we investigated a large number of attacks and estimated per capita risk during attack and its relation to the size, shape, and internal structure of prey groups. Predators were found to frequently form coordinated hunting groups, with up to five individuals attacking in line formation. Attacks were associated with increased fragmentation and irregularities in the spatial structure of prey groups, features that inhibit collective information transfer among prey. Prey group fragmentation, likely facilitated by predator line formation, increased (estimated) per capita risk of prey, provided prey schools were maintained below a threshold size of approximately 2 m(2). Our results highlight the importance of collective behavior to the strategies employed by both predators and prey under conditions of considerable informational constraints.
[Mh] Termos MeSH primário: Peixes/fisiologia
Comportamento Predatório/fisiologia
[Mh] Termos MeSH secundário: Animais
Comportamento Animal
Ecossistema
Fatores de Risco
Salmoniformes/fisiologia
Comportamento Social
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1302
[Cu] Atualização por classe:120713
[Lr] Data última revisão:
120713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120612
[St] Status:MEDLINE
[do] DOI:10.1016/j.cub.2012.04.050


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[PMID]:21639052
[Au] Autor:Schmidt SN; Harvey CJ; Vander Zanden MJ
[Ad] Endereço:Center for Limnology, University of Wisconsin, Madison, Wisconsin 53706, USA. schmidts@stolaf.edu
[Ti] Título:Historical and contemporary trophic niche partitioning among Laurentian Great Lakes coregonines.
[So] Source:Ecol Appl;21(3):888-96, 2011 Apr.
[Is] ISSN:1051-0761
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Anthropogenic activities have significantly altered freshwater fish communities. Extirpations of deepwater coregonines (Coregonus spp.), a diverse group of fish species, have left vast areas of the Laurentian Great Lakes devoid of a deepwater fish community. Currently, fisheries managers are considering restoring populations by reintroducing deepwater coregonines from Lake Superior and Lake Nipigon. However, little is known about the historical ecology of deepwater coregonines, and species characterization has proved difficult. We used stable isotope analysis of museum-preserved and contemporary specimens to investigate if (1) coregonine species historically occupied distinct niches and (2) the pattern of trophic niche partitioning has changed over the last century. Across all lakes, individual species occupied distinct trophic niches, confirming that these species were ecologically distinct. Understanding trophic niche partitioning helps resolve uncertainty about distinctness of species within and across lakes and may provide a better ecological basis for rehabilitation of Great Lakes food webs and ecosystems.
[Mh] Termos MeSH primário: Cadeia Alimentar
Salmoniformes/fisiologia
[Mh] Termos MeSH secundário: Animais
Conservação dos Recursos Naturais
Demografia
Monitoramento Ambiental
Great Lakes Region
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1107
[Cu] Atualização por classe:110606
[Lr] Data última revisão:
110606
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:110607
[St] Status:MEDLINE


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[PMID]:21235548
[Au] Autor:Schmidt DJ; Crook DA; O'Connor JP; Hughes JM
[Ad] Endereço:Australian Rivers Institute, Griffith University, Nathan, 4111 Queensland, Australia. d.schmidt@griffith.edu.au
[Ti] Título:Genetic analysis of threatened Australian grayling Prototroctes maraena suggests recruitment to coastal rivers from an unstructured marine larval source population.
[So] Source:J Fish Biol;78(1):98-111, 2011 Jan.
[Is] ISSN:1095-8649
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Population genetic variation of Australian grayling Prototroctes maraena was examined to determine whether the dispersal strategy of this amphidromous species favours retention of larvae and juveniles in close proximity to their natal river, or mixing of populations via marine dispersal. Variation in microsatellite and mitochondrial DNA markers was unstructured and differentiation was indistinguishable from zero across four coastal rivers spanning approximately one-quarter of the continental range of the species. This result indicates that the marine larval and juvenile phase probably facilitates extensive gene flow among coastal rivers and agrees with a previous analysis of otolith chemistry that suggested larvae probably move into the sea rather than remain in estuaries. It appears likely that the dispersal strategy of P. maraena would enable recolonization of rivers that experience localized extinction provided that connectivity between freshwater habitats and the sea is sufficient to permit migration and that enough source populations remain intact to support viability of the wider population.
[Mh] Termos MeSH primário: Fluxo Gênico
Variação Genética
Genética Populacional
Rios
Salmoniformes/genética
[Mh] Termos MeSH secundário: Animais
Conservação dos Recursos Naturais
DNA Mitocondrial/genética
Geografia
Repetições de Microssatélites
Vitória
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1105
[Cu] Atualização por classe:110117
[Lr] Data última revisão:
110117
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:110118
[St] Status:MEDLINE
[do] DOI:10.1111/j.1095-8649.2010.02844.x


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[PMID]:21078028
[Au] Autor:Poulsen SB; Svendsen JC; Jensen LF; Schulz C; Jäger-Kleinicke T; Schwarten H
[Ad] Endereço:Fisheries and Maritime Museum, DK-6710 Esbjerg V, Denmark. sbp@fimus.dk
[Ti] Título:Effects of food deprivation on refuge use and dispersal in juvenile North Sea houting Coregonus oxyrinchus under experimental conditions.
[So] Source:J Fish Biol;77(7):1702-8, 2010 Nov.
[Is] ISSN:1095-8649
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study tested the influence of energetic state on refuge use and dispersal in juvenile North Sea houting Coregonus oxyrinchus in an artificial stream. Food-deprived fish spent more time outside refuges than well-fed fish; however, the well-fed fish initiated dispersal faster than the food-deprived fish. The results may indicate state-dependent refuge use and dispersal in C. oxyrinchus.
[Mh] Termos MeSH primário: Comportamento Animal/fisiologia
Privação de Alimentos/fisiologia
Salmoniformes/fisiologia
[Mh] Termos MeSH secundário: Animais
Mar do Norte
Dinâmica Populacional
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1102
[Cu] Atualização por classe:101116
[Lr] Data última revisão:
101116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:101117
[St] Status:MEDLINE
[do] DOI:10.1111/j.1095-8649.2010.02772.x


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[PMID]:20674753
[Au] Autor:Li J; Xia R; McDowall RM; López JA; Lei G; Fu C
[Ad] Endereço:Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China.
[Ti] Título:Phylogenetic position of the enigmatic Lepidogalaxias salamandroides with comment on the orders of lower euteleostean fishes.
[So] Source:Mol Phylogenet Evol;57(2):932-6, 2010 Nov.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This study examines phylogenetic placement of the enigmatic Western Australian Lepidogalaxias, and extends previous studies by including eight new taxa to enable re-examination phylogenetic relationships of lower euteleostean fishes at the ordinal level, based on mitochondrial genomes from 39 ingroup taxa and 17 outgroups. Our results suggest that Lepidogalaxias occupies a basal position among all euteleosts, in contrast with earlier hypotheses that variously suggested a closer relationship to esocid fishes, or to the galaxiid Lovettia. In addition our evidence shows that Osmeriformes should be restricted Retropinnidae, Osmeridae, Plecoglossidae and Salangidae. This reduced Osmeriformes is supported in our results as the sister group of Stomiiformes. Galaxiidae, which is often closely linked to Osmeriformes, emerges as sister group of a combined Osmeriformes, Stomiiformes, Salmoniformes, Esociformes and Argentiformes, and we give Galaxiiformes the rank of order to include all remaining galaxioid fishes (Galaxias and allied taxa, Aplochiton and Lovettia). Our results also support a sister group relationship between Salmoniformes and Esociformes, which are together the sister group of Argentiniformes.
[Mh] Termos MeSH primário: Peixes/classificação
Peixes/genética
Filogenia
[Mh] Termos MeSH secundário: Animais
Esociformes/classificação
Esociformes/genética
Osmeriformes/classificação
Osmeriformes/genética
Salmoniformes/classificação
Salmoniformes/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1102
[Cu] Atualização por classe:101103
[Lr] Data última revisão:
101103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:100803
[St] Status:MEDLINE
[do] DOI:10.1016/j.ympev.2010.07.016



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