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[PMID]:29247930
[Au] Autor:Kopko O; Dabrowska H
[Ad] Endereço:National Marine Fisheries Research Institute (NMFRI), Gdynia, Poland.
[Ti] Título:Variability of biological indices, biomarkers, and organochlorine contaminants in flounder (Platichthys flesus) in the Gulf of Gdansk, southern Baltic Sea.
[So] Source:Chemosphere;194:701-713, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Biological indices, biomarkers (EROD activity, DNA SB, 1-OH pyrene), and organochlorine contaminants were investigated in flounder collected in the Gulf of Gdansk during March-December 2011 to describe their seasonal variability and interrelations. Univariate and multivariate statistics were used to evaluate the relations. The EROD activity positively correlated with DNA SB, both negatively correlated with CF, GSI, and HSI, and there was a moderate positive correlation for EROD and DNA SB with 1-OH pyrene. EROD highest activity corresponded to a resting stage of gonad development. DNA SB, highest during spawning, gradually decreased until late autumn. The PCBs, DDTs, HCB, HCHs, dieldrin, and heptachlor levels in muscle tissue were quantified on a wet and lipid basis. In each case, their levels decreased after spawning, fluctuated over the study period indicating that their accumulation was pronouncedly controlled by chemical-specific properties, their levels in prey, and lipid dynamics.
[Mh] Termos MeSH primário: Linguado/metabolismo
[Mh] Termos MeSH secundário: Animais
Países Bálticos
Biomarcadores/análise
Linguado/fisiologia
Hidrocarbonetos Clorados/química
Músculos/química
Bifenilos Policlorados/análise
Estações do Ano
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Hydrocarbons, Chlorinated); 0 (Water Pollutants, Chemical); DFC2HB4I0K (Polychlorinated Biphenyls)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171217
[St] Status:MEDLINE


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[PMID]:29331483
[Au] Autor:Liu X; Li Z; Wang B; Zhu H; Liu Y; Qi J; Zhang Q
[Ad] Endereço:Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China.
[Ti] Título:GATA4 is a transcriptional regulator of R-spondin1 in Japanese flounder (Paralichthys olivaceus).
[So] Source:Gene;648:68-75, 2018 Mar 30.
[Is] ISSN:1879-0038
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:GATA4 is a well-known transcription factor of the GATA family implicated in regulation of sex determination and gonadal development in mammals. In this study, we cloned the full-length cDNA of Paralichthys olivaceus gata4 (Po-gata4). Phylogenetic, gene structure, and synteny analysis showed that Po-GATA4 is homologous to GATA4 of teleost and tetrapod. Po-gata4 transcripts were detected in Sertoli cells, spermatogonia, oogonia and oocytes, with higher transcript levels overall in the testis than the ovary. The promoter region of P. olivaceus R-spondin1was found to contain a GATA4-binding motif. Results of CBA (cleaved amplified polymorphic sequence-based binding assay) indicated that GATA4 could indeed bind to the promoter sequence of R-spondin1. Moreover, human GATA4 recombinant protein could upregulate R-spondin1 in P. olivaceus ovary cells and FBCs (flounder brain cell line). In FBCs, overexpression of Po-gata4 resulted in elevated transcript levels of R-spondin1. Taken together, our results indicate that Po-GATA4 is involved in gonadal development by regulating R-spondin1 expression.
[Mh] Termos MeSH primário: Embrião não Mamífero/metabolismo
Proteínas de Peixes/genética
Linguado/genética
Fator de Transcrição GATA4/genética
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Sequência de Bases
Linhagem Celular
Embrião não Mamífero/citologia
Embrião não Mamífero/embriologia
Feminino
Proteínas de Peixes/classificação
Proteínas de Peixes/metabolismo
Linguado/embriologia
Linguado/metabolismo
Fator de Transcrição GATA4/classificação
Fator de Transcrição GATA4/metabolismo
Regulação da Expressão Gênica no Desenvolvimento
Masculino
Oogônios/citologia
Oogônios/metabolismo
Filogenia
Regiões Promotoras Genéticas/genética
Ligação Proteica
Espermatogônias/citologia
Espermatogônias/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fish Proteins); 0 (GATA4 Transcription Factor)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180115
[St] Status:MEDLINE


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[PMID]:29253829
[Au] Autor:Bae JM
[Ad] Endereço:Department of Preventive Medicine, Jeju National University School of Medicine, Jejudo, Republic of Korea. Electronic address: jmbae@jejunu.ac.kr.
[Ti] Título:Additional experimental and epidemiologic studies for evaluating pathogenecity of Kudoa septempunctata should be needed.
[So] Source:Int J Food Microbiol;266:222-223, 2018 02 02.
[Is] ISSN:1879-3460
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Mh] Termos MeSH primário: Linguado
Myxozoa
[Mh] Termos MeSH secundário: Animais
Estudos Epidemiológicos
Doenças dos Peixes
Seres Humanos
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180207
[Lr] Data última revisão:
180207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE


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[PMID]:28943298
[Au] Autor:Kabeya N; Chiba M; Haga Y; Satoh S; Yoshizaki G
[Ad] Endereço:Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
[Ti] Título:Cloning and functional characterization of fads2 desaturase and elovl5 elongase from Japanese flounder Paralichthys olivaceus.
[So] Source:Comp Biochem Physiol B Biochem Mol Biol;214:36-46, 2017 Dec.
[Is] ISSN:1879-1107
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Japanese flounder Paralichthys olivaceus has an essential requirement for long-chain polyunsaturated fatty acids (LC-PUFA), particularly docosahexaenoic acid and eicosapentaenoic acid, but the enzymes involved in LC-PUFA biosynthesis are thought to be absent or to have low activity. Teleost fish, in particular, have quite diversified substrate preference of these enzymes even among closely related species, implying that each species could have different LC-PUFA biosynthetic capabilities. Therefore, in the present study, we characterized Japanese flounder fatty acid desaturase 2 (Fads2) and elongation of very long-chain fatty acids protein 5 (Elovl5) in order to precisely characterize the LC-PUFA biosynthesis pathway. Fads2 has Δ6 and Δ8 desaturase activity and Elovl5 has elongase activity toward C18 and C20 PUFA, suggesting that Japanese flounder is capable of synthesizing 20:4n-3 and 20:3n-6 from 18:3n-3 and 18:2n-6, respectively. Expression analysis showed that the fads2 was highly expressed in the brain and eye, while the elovl5 was highly expressed in the eye and pyloric caeca. This information will be beneficial for developing an ideal feed to support the aquaculture of Japanese flounder.
[Mh] Termos MeSH primário: Acetiltransferases/genética
Ácidos Graxos Dessaturases/genética
Ácidos Graxos Insaturados/metabolismo
Proteínas de Peixes/genética
Linguado/genética
[Mh] Termos MeSH secundário: Acetiltransferases/metabolismo
Sequência de Aminoácidos
Animais
Sítios de Ligação
Encéfalo/metabolismo
Ceco/metabolismo
Clonagem Molecular
Olho/metabolismo
Ácidos Graxos Dessaturases/metabolismo
Proteínas de Peixes/metabolismo
Linguado/classificação
Linguado/metabolismo
Expressão Gênica
Cinética
Especificidade de Órgãos
Filogenia
Pichia/genética
Pichia/metabolismo
Ligação Proteica
Domínios e Motivos de Interação entre Proteínas
Proteínas Recombinantes/genética
Proteínas Recombinantes/metabolismo
Alinhamento de Sequência
Homologia de Sequência de Aminoácidos
Especificidade por Substrato
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fatty Acids, Unsaturated); 0 (Fish Proteins); 0 (Recombinant Proteins); EC 1.14.19.- (Fatty Acid Desaturases); EC 2.3.1.- (Acetyltransferases)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171030
[Lr] Data última revisão:
171030
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170926
[St] Status:MEDLINE


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[PMID]:28777813
[Au] Autor:Wang N; Wang R; Wang R; Tian Y; Shao C; Jia X; Chen S
[Ad] Endereço:Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.
[Ti] Título:The integrated analysis of RNA-seq and microRNA-seq depicts miRNA-mRNA networks involved in Japanese flounder (Paralichthys olivaceus) albinism.
[So] Source:PLoS One;12(8):e0181761, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Albinism, a phenomenon characterized by pigmentation deficiency on the ocular side of Japanese flounder (Paralichthys olivaceus), has caused significant damage. Limited mRNA and microRNA (miRNA) information is available on fish pigmentation deficiency. In this study, a high-throughput sequencing strategy was employed to identify the mRNA and miRNAs involved in P. olivaceus albinism. Based on P. olivaceus genome, RNA-seq identified 21,787 know genes and 711 new genes by transcripts assembly. Of those, 235 genes exhibited significantly different expression pattern (fold change ≥2 or ≤0.5 and q-value≤0.05), including 194 down-regulated genes and 41 up-regulated genes in albino versus normally pigmented individuals. These genes were enriched to 81 GO terms and 9 KEGG pathways (p≤0.05). Among those, the pigmentation related pathways-Melanogenesis and tyrosine metabolism were contained. High-throughput miRNA sequencing identified a total of 475 miRNAs, including 64 novel miRNAs. Furthermore, 33 differentially expressed miRNAs containing 13 up-regulated and 20 down-regulated miRNAs were identified in albino versus normally pigmented individuals (fold change ≥1.5 or ≤0.67 and p≤0.05). The next target prediction discovered a variety of putative target genes, of which, 134 genes including Tyrosinase (TYR), Tyrosinase-related protein 1 (TYRP1), Microphthalmia-associated transcription factor (MITF) were overlapped with differentially expressed genes derived from RNA-seq. These target genes were significantly enriched to 254 GO terms and 103 KEGG pathways (p<0.001). Of those, tyrosine metabolism, lysosomes, phototransduction pathways, etc., attracted considerable attention due to their involvement in regulating skin pigmentation. Expression patterns of differentially expressed mRNA and miRNAs were validated in 10 mRNA and 10 miRNAs by qRT-PCR. With high-throughput mRNA and miRNA sequencing and analysis, a series of interested mRNA and miRNAs involved in fish pigmentation are identified. And the miRNA-mRNA regulatory network also provides a solid starting point for further elucidation of fish pigmentation deficiency.
[Mh] Termos MeSH primário: Albinismo/genética
Proteínas de Peixes/genética
Linguado/genética
Redes Reguladoras de Genes
Sequenciamento de Nucleotídeos em Larga Escala/métodos
MicroRNAs/genética
RNA Mensageiro/genética
[Mh] Termos MeSH secundário: Animais
Linguado/crescimento & desenvolvimento
Perfilação da Expressão Gênica
Análise de Sequência de RNA/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fish Proteins); 0 (MicroRNAs); 0 (RNA, Messenger)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181761


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[PMID]:28698161
[Au] Autor:Jo A; Im J; Lee HE; Jang D; Nam GH; Mishra A; Kim WJ; Kim W; Cha HJ; Kim HS
[Ad] Endereço:Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan 46241, Republic of Korea; Genetic Engineering Institute, Pusan National University, Busan 46241, Republic of Korea.
[Ti] Título:Evolutionary conservation and expression of miR-10a-3p in olive flounder and rock bream.
[So] Source:Gene;628:16-23, 2017 Sep 10.
[Is] ISSN:1879-0038
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:MicroRNAs (miRNAs) are small non-coding RNAs (ncRNAs) that mainly bind to the seed sequences located within the 3' untranslated region (3' UTR) of target genes. They perform an important biological function as regulators of gene expression. Different genes can be regulated by the same miRNA, whilst different miRNAs can be regulated by the same genes. Here, the evolutionary conservation and expression pattern of miR-10a-3p in olive flounder and rock bream was examined. Binding sites (AAAUUC) to seed region of the 3' UTR of target genes were highly conserved in various species. The expression pattern of miR-10a-3p was ubiquitous in the examined tissues, whilst its expression level was decreased in gill tissues infected by viral hemorrhagic septicemia virus (VHSV) compared to the normal control. In the case of rock bream, the spleen, kidney, and liver tissues showed dominant expression levels of miR-10a-3p. Only the liver tissues in the rock bream samples infected by the iridovirus indicated a dominant miR-10a-3p expression. The gene ontology (GO) analysis of predicted target genes for miR-10a-3p revealed that multiple genes are related to binding activity, catalytic activity, cell components as well as cellular and metabolic process. Overall the results imply that the miR-10a-3p could be used as a biomarker to detect VHSV infection in olive flounder and iridovirus infection in rock bream. In addition, the data provides fundamental information for further study of the complex interaction between miR-10a-3p and gene expression.
[Mh] Termos MeSH primário: Evolução Molecular
Doenças dos Peixes/genética
Peixes/genética
Linguado/genética
MicroRNAs/genética
[Mh] Termos MeSH secundário: Animais
Doenças dos Peixes/microbiologia
Peixes/microbiologia
Linguado/microbiologia
Perfilação da Expressão Gênica
Proteínas de Homeodomínio/genética
Infecções Estreptocócicas/microbiologia
Infecções Estreptocócicas/veterinária
Streptococcus
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Homeodomain Proteins); 0 (MicroRNAs)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171004
[Lr] Data última revisão:
171004
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170713
[St] Status:MEDLINE


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[PMID]:28689860
[Au] Autor:Liu Y; Ma D; Zhao C; Xiao Z; Xu S; Xiao Y; Wang Y; Liu Q; Li J
[Ad] Endereço:Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
[Ti] Título:The expression pattern of hsp70 plays a critical role in thermal tolerance of marine demersal fish: Multilevel responses of Paralichthys olivaceus and its hybrids (P. olivaceus ♀ × P. dentatus ♂) to chronic and acute heat stress.
[So] Source:Mar Environ Res;129:386-395, 2017 Aug.
[Is] ISSN:1879-0291
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Ocean warming has multifaceted impacts on marine organisms. This study investigated the different responses of Paralichthys olivaceus and the hybrids (P. olivaceus ♀ × P. dentatus ♂) to chronic and acute heat stress. By comparing their survival, behavioural and histological changes, we found that the hybrids possess a better thermal tolerance with a higher cumulative survival rate (CSR), relatively fewer behavioural changes and less gill damage. Moreover, we analysed the relationship between thermal tolerance and the hsp70 expression pattern and found that thermal tolerant species (the hybrids) exhibited higher threshold induction temperature, shorter durations, stronger magnitudes and a delay in hsp70 expression. We speculated that the expression mode of hsp70, rather than itself, plays a critical role in thermal tolerance. These findings would improve the understanding of hsp70 in future marine climate research and help clarify the profound effects of rising temperature on marine demersal fishes.
[Mh] Termos MeSH primário: Linguado/fisiologia
Proteínas de Choque Térmico HSP70/metabolismo
Estresse Fisiológico/fisiologia
[Mh] Termos MeSH secundário: Animais
Peixes
Linguado/metabolismo
Termotolerância/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (HSP70 Heat-Shock Proteins)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170711
[St] Status:MEDLINE


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[PMID]:28669662
[Au] Autor:Li P; Wang B; Cao D; Liu Y; Zhang Q; Wang X
[Ad] Endereço:Key Laboratory of Marine Genetics and Breeding, College of Marine Life Science, Ocean University of China, Ministry of Education, Qingdao, China.
[Ti] Título:Characterization and functional analysis of the Paralichthys olivaceus prdm1 gene promoter.
[So] Source:Comp Biochem Physiol B Biochem Mol Biol;212:32-40, 2017 Oct.
[Is] ISSN:1879-1107
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:PR domain containing protein 1 (Prdm1) is a transcriptional repressor identified in various species and plays multiple important roles in immune response and embryonic development. However, little is known about the transcriptional regulation of the prdm1 gene. This study aims to characterize the promoter of Paralichthys olivaceus prdm1 (Po-prdm1) gene and determine the regulatory mechanism of Po-prdm1 expression. A 2000bp-long 5'-flanking region (translation initiation site designated as +1) of the Po-prdm1 gene was isolated and characterized. The regulatory elements in this fragment were then investigated and many putative transcription factor (TF) binding sites involved in immunity and multiple tissue development were identified. A 5'-deletion analysis was then conducted, and the ability of the deletion mutants to promote luciferase and green fluorescent protein (GFP) expression in a flounder gill cell line was examined. The results revealed that the minimal promoter is located in the region between -446 and -13bp, and the region between -1415 and -13bp enhanced the promoter activity. Site-directed mutation analysis was subsequently performed on the putative regulatory elements sites, and the results indicated that FOXP1, MSX and BCL6 binding sites play negative functional roles in the regulation of the Po-prdm1 expression in FG cells. In vivo analysis demonstrated that a GFP reporter gene containing 1.4kb-long promoter fragment (-1415/-13) was expressed in the head and trunk muscle fibres of transient transgenic zebrafish embryos. Our study provided the basic information for the exploration of Po-prdm1 regulation and expression.
[Mh] Termos MeSH primário: Proteínas de Peixes/genética
Linguado/genética
Regiões Promotoras Genéticas
Proteínas Repressoras/genética
[Mh] Termos MeSH secundário: Região 5'-Flanqueadora
Animais
Animais Geneticamente Modificados
Sequência de Bases
Linhagem Celular
Linguado/crescimento & desenvolvimento
Linguado/metabolismo
Regulação da Expressão Gênica
Proteínas de Fluorescência Verde/genética
Peixe-Zebra/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fish Proteins); 0 (Repressor Proteins); 147336-22-9 (Green Fluorescent Proteins)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170906
[Lr] Data última revisão:
170906
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170704
[St] Status:MEDLINE


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[PMID]:28647285
[Au] Autor:Pédron N; Le Du J; Charrier G; Zambonino-Infante JL; Le Bayon N; Vasconcelos RP; Fonseca VF; Le Grand F; Laroche J
[Ad] Endereço:Université de Bretagne Occidentale, UMR 6539 CNRS/UBO/IRD/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire Adaptation, Reproduction et Nutrition (ARN) des Poissons, Plouzané, France.
[Ti] Título:Contrasting patterns of energy metabolism in northern vs southern peripheral European flounder populations exposed to temperature rising and hypoxia.
[So] Source:Mar Environ Res;129:258-267, 2017 Aug.
[Is] ISSN:1879-0291
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A two months common garden experiment was carried out to explore the potential differences of energy metabolism in northern core (France, 50°N and 47°N) vs southern peripheral (Portugal, 41°N) populations of European flounder Platichthys flesus, submitted to cold condition (CC: water temperature = 10 °C) and to warm and hypoxic condition (WHC: water temperature = 22 °C, and moderate hypoxia with O saturation = 40% during the last 6 days). Convergent growth rates (in length) were observed in the different populations and conditions, when the southern peripheral population of Portugal did not grow under cold conditions. A general reduction in liver lipid storage was observed in all populations subjected to WHC when compared to CC, whereas muscle lipid storage was unaffected. The thermal and hypoxia treatment induced changes in muscle phospholipids (PL) ratios: phosphatidylserine/PL, phosphatidylinositol/PL, between northern and southern populations. Fish from northern estuaries displayed marked anaerobiosis in WHC (increased liver LDH activity) vs marked aerobiosis under CC (higher muscle CS and CCO activities). Contrariwise, fish from the southern estuary displayed equilibrium between anaerobiosis and aerobiosis activities in WHC. Flounders from the southern population exhibited generally lower G6PDH activity (proxy for anabolism and for defense against oxidative damage), tissue-specific anaerobiosis response (muscle LDH activity) and lower CS and CCO muscle activities (aerobiosis markers) when compared to northern populations. Globally, these inter-population differences in bioenergetics suggest that southern peripheral vs northern core populations have developed differential capacity to cope with interacting stressors and that much of this variation is more likely due to local adaptation.
[Mh] Termos MeSH primário: Metabolismo Energético/fisiologia
Monitoramento Ambiental
Linguado/fisiologia
Água do Mar/química
Temperatura Ambiente
[Mh] Termos MeSH secundário: Animais
Estuários
França
Portugal
Estresse Fisiológico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170626
[St] Status:MEDLINE


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[PMID]:28632745
[Au] Autor:Chan MN; Beaudreau AH; Loring PA
[Ad] Endereço:College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Juneau, Alaska, United States of America.
[Ti] Título:Evaluating patterns and drivers of spatial change in the recreational guided fishing sector in Alaska.
[So] Source:PLoS One;12(6):e0179584, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Understanding the impacts of recreational fishing on habitats and species, as well as the social and ecological importance of place to anglers, requires information on the spatial distribution of fishing activities. This study documented long-term changes in core fishing areas of a major recreational fishery in Alaska and identified biological, regulatory, social, and economic drivers of spatial fishing patterns by charter operators. Using participatory mapping and in-person interviews, we characterized the spatial footprint of 46 charter operators in the communities of Sitka and Homer since the 1990s. The spatial footprint differed between Homer and Sitka respondents, with Homer operators consistently using larger areas for Pacific halibut than Sitka operators. Homer and Sitka showed opposite trends in core fishing location area over time, with an overall decrease in Homer and an overall increase in Sitka. For both Sitka and Homer respondents, the range of areas fished was greater for Pacific halibut than for rockfish/lingcod or Pacific salmon. Spatial patterns were qualitatively different between businesses specializing in single species trips and those that operated multispecies trips and between businesses with one vessel and those with multiple vessels. In Homer, the most frequently cited reasons for changes in the location and/or extent of fishing were changes in trip type and the price of fuel, while in Sitka, the most frequently cited reasons for spatial shifts were changes to Pacific halibut regulations and gaining experience or exploring new locations. The diversity of charter fishing strategies in Alaska may allow individual charter operators to respond differently to perturbations and thus maintain resilience of the industry as a whole to social, environmental, and regulatory change. This research also highlights the importance of understanding fishers' diverse portfolio of activities to effective ecosystem-based management.
[Mh] Termos MeSH primário: Ecossistema
Peixes/fisiologia
Recreação
[Mh] Termos MeSH secundário: Alaska
Animais
Conservação dos Recursos Naturais
Pesqueiros/tendências
Linguado/fisiologia
Salmão/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179584



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