Base de dados : MEDLINE
Pesquisa : A13.075 [Categoria DeCS]
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[PMID]:28449681
[Au] Autor:Larouche O; Zelditch ML; Cloutier R
[Ad] Endereço:Laboratoire de Paléontologie et de Biologie évolutive, Université du Québec à Rimouski, Rimouski, Québec, G5L 3A1, Canada.
[Ti] Título:Fin modules: an evolutionary perspective on appendage disparity in basal vertebrates.
[So] Source:BMC Biol;15(1):32, 2017 04 27.
[Is] ISSN:1741-7007
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Fishes are extremely speciose and also highly disparate in their fin configurations, more specifically in the number of fins present as well as their structure, shape, and size. How they achieved this remarkable disparity is difficult to explain in the absence of any comprehensive overview of the evolutionary history of fish appendages. Fin modularity could provide an explanation for both the observed disparity in fin configurations and the sequential appearance of new fins. Modularity is considered as an important prerequisite for the evolvability of living systems, enabling individual modules to be optimized without interfering with others. Similarities in developmental patterns between some of the fins already suggest that they form developmental modules during ontogeny. At a macroevolutionary scale, these developmental modules could act as evolutionary units of change and contribute to the disparity in fin configurations. This study addresses fin disparity in a phylogenetic perspective, while focusing on the presence/absence and number of each of the median and paired fins. RESULTS: Patterns of fin morphological disparity were assessed by mapping fin characters on a new phylogenetic supertree of fish orders. Among agnathans, disparity in fin configurations results from the sequential appearance of novel fins forming various combinations. Both median and paired fins would have appeared first as elongated ribbon-like structures, which were the precursors for more constricted appendages. Among chondrichthyans, disparity in fin configurations relates mostly to median fin losses. Among actinopterygians, fin disparity involves fin losses, the addition of novel fins (e.g., the adipose fin), and coordinated duplications of the dorsal and anal fins. Furthermore, some pairs of fins, notably the dorsal/anal and pectoral/pelvic fins, show non-independence in their character distribution, supporting expectations based on developmental and morphological evidence that these fin pairs form evolutionary modules. CONCLUSIONS: Our results suggest that the pectoral/pelvic fins and the dorsal/anal fins form two distinct evolutionary modules, and that the latter is nested within a more inclusive median fins module. Because the modularity hypotheses that we are testing are also supported by developmental and variational data, this constitutes a striking example linking developmental, variational, and evolutionary modules.
[Mh] Termos MeSH primário: Nadadeiras de Animais/crescimento & desenvolvimento
Evolução Biológica
Padronização Corporal
Peixes/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Nadadeiras de Animais/anatomia & histologia
Animais
Peixes/anatomia & histologia
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1186/s12915-017-0370-x


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[PMID]:29020095
[Au] Autor:Cardeñosa D; Fields A; Abercrombie D; Feldheim K; Shea SKH; Chapman DD
[Ad] Endereço:School of Marine and Atmospheric Science, Stony Brook University, Stony Brook, New York, United States of America.
[Ti] Título:A multiplex PCR mini-barcode assay to identify processed shark products in the global trade.
[So] Source:PLoS One;12(10):e0185368, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Protecting sharks from overexploitation has become global priority after widespread population declines have occurred. Tracking catches and trade on a species-specific basis has proven challenging, in part due to difficulties in identifying processed shark products such as fins, meat, and liver oil. This has hindered efforts to implement regulations aimed at promoting sustainable use of commercially important species and protection of imperiled species. Genetic approaches to identify shark products exist but are typically based on sequencing or amplifying large DNA regions and may fail to work on heavily processed products in which DNA is degraded. Here, we describe a novel multiplex PCR mini-barcode assay based on two short fragments of the cytochrome oxidase I (COI) gene. This assay can identify to species all sharks currently listed on the Convention of International Trade of Endangered Species (CITES) and most shark species present in the international trade. It achieves species diagnosis based on a single PCR and one to two downstream DNA sequencing reactions. The assay is capable of identifying highly processed shark products including fins, cooked shark fin soup, and skin-care products containing liver oil. This is a straightforward and reliable identification method for data collection and enforcement of regulations implemented for certain species at all governance levels.
[Mh] Termos MeSH primário: Comércio
Código de Barras de DNA Taxonômico/métodos
Internacionalidade
Reação em Cadeia da Polimerase/métodos
Tubarões/genética
[Mh] Termos MeSH secundário: Nadadeiras de Animais/fisiologia
Animais
China
DNA/genética
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9007-49-2 (DNA)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171012
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185368


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[PMID]:28938002
[Au] Autor:Ferrón HG
[Ad] Endereço:Institut Cavanilles de Biodiversitat I Biologia Evolutiva, University of Valencia, Burjassot, Spain.
[Ti] Título:Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks.
[So] Source:PLoS One;12(9):e0185185, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Otodontids include some of the largest macropredatory sharks that ever lived, the most extreme case being Otodus (Megaselachus) megalodon. The reasons underlying their gigantism, distribution patterns and extinction have been classically linked with climatic factors and the evolution, radiation and migrations of cetaceans during the Paleogene. However, most of these previous proposals are based on the idea of otodontids as ectothermic sharks regardless of the ecological, energetic and body size constraints that this implies. Interestingly, a few recent studies have suggested the possible existence of endothermy in these sharks thus opening the door to a series of new interpretations. Accordingly, this work proposes that regional endothermy was present in otodontids and some closely related taxa (cretoxyrhinids), playing an important role in the evolution of gigantism and in allowing an active mode of live. The existence of regional endothermy in these groups is supported here by three different approaches including isotopic-based approximations, swimming speed inferences and the application of a novel methodology for assessing energetic budget and cost of swimming in extinct taxa. In addition, this finding has wider implications. It calls into question some previous paleotemperature estimates based partially on these taxa, suggests that the existing hypothesis about the evolution of regional endothermy in fishes requires modification, and provides key evidence for understanding the evolution of gigantism in active macropredators.
[Mh] Termos MeSH primário: Tamanho Corporal/fisiologia
Tubarões/anatomia & histologia
Tubarões/fisiologia
[Mh] Termos MeSH secundário: Nadadeiras de Animais/anatomia & histologia
Animais
Evolução Biológica
Extinção Biológica
Fósseis
Gigantismo
Modelos Biológicos
Consumo de Oxigênio
Isótopos de Oxigênio/análise
Natação
Temperatura Ambiente
Dente/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Oxygen Isotopes)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170923
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185185


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[PMID]:28811310
[Au] Autor:Tornini VA; Thompson JD; Allen RL; Poss KD
[Ad] Endereço:Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA.
[Ti] Título:Live fate-mapping of joint-associated fibroblasts visualizes expansion of cell contributions during zebrafish fin regeneration.
[So] Source:Development;144(16):2889-2895, 2017 08 15.
[Is] ISSN:1477-9129
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The blastema is a mass of progenitor cells responsible for regeneration of amputated salamander limbs and fish fins. Previous studies have indicated that resident cell sources producing the blastema contribute lineage-restricted progeny to regenerating tissue. However, these studies have labeled general cell types rather than granular cell subpopulations, and they do not explain the developmental transitions that must occur for distal structures to arise from cells with proximal identities in the appendage stump. Here, we find that regulatory sequences of , which encodes an enzyme that synthesizes serotonin, mark a subpopulation of fibroblast-like cells restricted to the joints of uninjured adult zebrafish fins. Amputation stimulates serotonin production in regenerating fin fibroblasts, yet targeted mutations abrogating this response do not disrupt fin regeneration. In uninjured animals, -expressing cells contribute fibroblast progeny that remain restricted to joints throughout life. By contrast, upon amputation, joint cells give rise to fibroblasts that distribute across the entire lengths of regenerating fin rays. Our experiments visualize and quantify how incorporation into an appendage blastema broadens the progeny contributions of a cellular subpopulation that normally has proximodistal restrictions.
[Mh] Termos MeSH primário: Fibroblastos/citologia
Regeneração/fisiologia
[Mh] Termos MeSH secundário: Nadadeiras de Animais/citologia
Nadadeiras de Animais/metabolismo
Animais
Fibroblastos/metabolismo
Articulações/metabolismo
Articulações/fisiologia
Regeneração/genética
Peixe-Zebra
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170817
[St] Status:MEDLINE
[do] DOI:10.1242/dev.155655


  5 / 654 MEDLINE  
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[PMID]:28654649
[Au] Autor:Nangia N; Bale R; Chen N; Hanna Y; Patankar NA
[Ad] Endereço:Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL, United States of America.
[Ti] Título:Optimal specific wavelength for maximum thrust production in undulatory propulsion.
[So] Source:PLoS One;12(6):e0179727, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:What wavelengths do undulatory swimmers use during propulsion? In this work we find that a wide range of body/caudal fin (BCF) swimmers, from larval zebrafish and herring to fully-grown eels, use specific wavelength (ratio of wavelength to tail amplitude of undulation) values that fall within a relatively narrow range. The possible emergence of this constraint is interrogated using numerical simulations of fluid-structure interaction. Based on these, it was found that there is an optimal specific wavelength (OSW) that maximizes the swimming speed and thrust generated by an undulatory swimmer. The observed values of specific wavelength for BCF animals are relatively close to this OSW. The mechanisms underlying the maximum propulsive thrust for BCF swimmers are quantified and are found to be consistent with the mechanisms hypothesized in prior work. The adherence to an optimal value of specific wavelength in most natural hydrodynamic propulsors gives rise to empirical design criteria for man-made propulsors.
[Mh] Termos MeSH primário: Nadadeiras de Animais/fisiologia
Modelos Biológicos
Natação/fisiologia
[Mh] Termos MeSH secundário: Animais
Fenômenos Biomecânicos/fisiologia
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170628
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179727


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[PMID]:28625871
[Au] Autor:Kara N; Wei C; Commanday AC; Patton JG
[Ad] Endereço:Department of Biological Sciences, Vanderbilt University, Nashville, TN, United States.
[Ti] Título:miR-27 regulates chondrogenesis by suppressing focal adhesion kinase during pharyngeal arch development.
[So] Source:Dev Biol;429(1):321-334, 2017 09 01.
[Is] ISSN:1095-564X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cranial neural crest cells are a multipotent cell population that generate all the elements of the pharyngeal cartilage with differentiation into chondrocytes tightly regulated by temporal intracellular and extracellular cues. Here, we demonstrate a novel role for miR-27, a highly enriched microRNA in the pharyngeal arches, as a positive regulator of chondrogenesis. Knock down of miR-27 led to nearly complete loss of pharyngeal cartilage by attenuating proliferation and blocking differentiation of pre-chondrogenic cells. Focal adhesion kinase (FAK) is a key regulator in integrin-mediated extracellular matrix (ECM) adhesion and has been proposed to function as a negative regulator of chondrogenesis. We show that FAK is downregulated in the pharyngeal arches during chondrogenesis and is a direct target of miR-27. Suppressing the accumulation of FAK in miR-27 morphants partially rescued the severe pharyngeal cartilage defects observed upon knock down of miR-27. These data support a crucial role for miR-27 in promoting chondrogenic differentiation in the pharyngeal arches through regulation of FAK.
[Mh] Termos MeSH primário: Região Branquial/embriologia
Região Branquial/enzimologia
Condrogênese/genética
Proteína-Tirosina Quinases de Adesão Focal/metabolismo
MicroRNAs/metabolismo
Peixe-Zebra/embriologia
Peixe-Zebra/genética
[Mh] Termos MeSH secundário: Nadadeiras de Animais/embriologia
Nadadeiras de Animais/metabolismo
Animais
Cartilagem/patologia
Diferenciação Celular/genética
Proliferação Celular/genética
Sobrevivência Celular/genética
Embrião não Mamífero/citologia
Embrião não Mamífero/metabolismo
Regulação da Expressão Gênica no Desenvolvimento
Técnicas de Silenciamento de Genes
MicroRNAs/genética
Morfogênese/genética
Crista Neural/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (MicroRNAs); 0 (microRNA-27, zebrafish); EC 2.7.10.2 (Focal Adhesion Protein-Tyrosine Kinases)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171111
[Lr] Data última revisão:
171111
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170620
[St] Status:MEDLINE


  7 / 654 MEDLINE  
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[PMID]:28506994
[Au] Autor:Eskova A; Chauvigné F; Maischein HM; Ammelburg M; Cerdà J; Nüsslein-Volhard C; Irion U
[Ad] Endereço:Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.
[Ti] Título:Gain-of-function mutations in Aqp3a influence zebrafish pigment pattern formation through the tissue environment.
[So] Source:Development;144(11):2059-2069, 2017 06 01.
[Is] ISSN:1477-9129
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The development of the pigmentation pattern in zebrafish is a tightly regulated process that depends on both the self-organizing properties of pigment cells and extrinsic cues from other tissues. Many of the known mutations that alter the pattern act cell-autonomously in pigment cells, and our knowledge about external regulators is limited. Here, we describe novel zebrafish mutants, which encompass several dominant missense mutations in Aquaporin 3a (Aqp3a) that lead to broken stripes and short fins. A loss-of-function allele, generated by CRISPR-Cas9, has no phenotypic consequences, demonstrating that Aqp3a is dispensable for normal development. Strikingly, the pigment cells from dominant mutants are capable of forming a wild-type pattern when developing in a wild-type environment, but the surrounding tissues in the mutants influence pigment cell behaviour and interfere with the patterning process. The mutated amino acid residues in the dominant alleles line the pore surface of Aqp3a and influence pore permeability. These results demonstrate an important effect of the tissue environment on pigment cell behaviour and, thereby, on pattern formation.
[Mh] Termos MeSH primário: Aquaporina 3/genética
Mutação/genética
Pigmentação
Proteínas de Peixe-Zebra/genética
Peixe-Zebra/metabolismo
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Nadadeiras de Animais/anatomia & histologia
Nadadeiras de Animais/citologia
Animais
Aquaporina 3/química
Aquaporina 3/metabolismo
Cromatóforos/metabolismo
Genes Dominantes
Proteínas de Fluorescência Verde/metabolismo
Mutação de Sentido Incorreto/genética
Permeabilidade
Fenótipo
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Proteínas de Peixe-Zebra/química
Proteínas de Peixe-Zebra/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (RNA, Messenger); 0 (Zebrafish Proteins); 0 (aquaporin 3, zebrafish); 147336-22-9 (Green Fluorescent Proteins); 158801-98-0 (Aquaporin 3)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170517
[St] Status:MEDLINE
[do] DOI:10.1242/dev.143495


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[PMID]:28494970
[Au] Autor:Jelcic M; Enyedi B; Xavier JB; Niethammer P
[Ad] Endereço:Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York; Louis V. Gerstner, Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, New York.
[Ti] Título:Image-Based Measurement of H O Reaction-Diffusion in Wounded Zebrafish Larvae.
[So] Source:Biophys J;112(9):2011-2018, 2017 May 09.
[Is] ISSN:1542-0086
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Epithelial injury induces rapid recruitment of antimicrobial leukocytes to the wound site. In zebrafish larvae, activation of the epithelial NADPH oxidase Duox at the wound margin is required early during this response. Before injury, leukocytes are near the vascular region, that is, ∼100-300 µm away from the injury site. How Duox establishes long-range signaling to leukocytes is unclear. We conceived that extracellular hydrogen peroxide (H O ) generated by Duox diffuses through the tissue to directly regulate chemotactic signaling in these cells. But before it can oxidize cellular proteins, H O must get past the antioxidant barriers that protect the cellular proteome. To test whether, or on which length scales this occurs during physiological wound signaling, we developed a computational method based on reaction-diffusion principles that infers H O degradation rates from intravital H O -biosensor imaging data. Our results indicate that at high tissue H O levels the peroxiredoxin-thioredoxin antioxidant chain becomes overwhelmed, and H O degradation stalls or ceases. Although the wound H O gradient reaches deep into the tissue, it likely overcomes antioxidant barriers only within ∼30 µm of the wound margin. Thus, Duox-mediated long-range signaling may require other spatial relay mechanisms besides extracellular H O diffusion.
[Mh] Termos MeSH primário: Nadadeiras de Animais/lesões
Peróxido de Hidrogênio/metabolismo
Microscopia de Fluorescência
Cauda/lesões
Peixe-Zebra/metabolismo
[Mh] Termos MeSH secundário: Nadadeiras de Animais/crescimento & desenvolvimento
Nadadeiras de Animais/metabolismo
Animais
Animais Geneticamente Modificados
Antioxidantes/metabolismo
Difusão
Processamento de Imagem Assistida por Computador
Cinética
Larva
Modelos Animais
Imagem Molecular
Peroxirredoxinas/metabolismo
Cauda/crescimento & desenvolvimento
Cauda/metabolismo
Tiorredoxinas/metabolismo
Peixe-Zebra/crescimento & desenvolvimento
Peixe-Zebra/lesões
[Pt] Tipo de publicação:JOURNAL ARTICLE; VIDEO-AUDIO MEDIA
[Nm] Nome de substância:
0 (Antioxidants); 52500-60-4 (Thioredoxins); BBX060AN9V (Hydrogen Peroxide); EC 1.11.1.15 (Peroxiredoxins)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170808
[Lr] Data última revisão:
170808
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170513
[St] Status:MEDLINE


  9 / 654 MEDLINE  
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[PMID]:28424312
[Au] Autor:Shih AM; Mendelson L; Techet AH
[Ad] Endereço:Experimental Hydrodynamics Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
[Ti] Título:Archer fish jumping prey capture: kinematics and hydrodynamics.
[So] Source:J Exp Biol;220(Pt 8):1411-1422, 2017 Apr 15.
[Is] ISSN:1477-9145
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Smallscale archer fish, , are best known for spitting jets of water to capture prey, but also hunt by jumping out of the water to heights of up to 2.5 body lengths. In this study, high-speed imaging and particle image velocimetry were used to characterize the kinematics and hydrodynamics of this jumping behavior. Jumping used a set of kinematics distinct from those of in-water feeding strikes and was segmented into three phases: (1) hovering to sight prey at the surface, (2) rapid upward thrust production and (3) gliding to the prey once out of the water. The number of propulsive tail strokes positively correlated with the height of the bait, as did the peak body velocity observed during a jump. During the gliding stage, the fish traveled ballistically; the kinetic energy when the fish left the water balanced with the change in potential energy from water exit to the maximum jump height. The ballistic estimate of the mechanical energy required to jump was comparable with the estimated mechanical energy requirements of spitting a jet with sufficient momentum to down prey and subsequently pursuing the prey in water. Particle image velocimetry showed that, in addition to the caudal fin, the wakes of the anal, pectoral and dorsal fins were of nontrivial strength, especially at the onset of thrust production. During jump initiation, these fins were used to produce as much vertical acceleration as possible given the spatial constraint of starting directly at the water's surface to aim.
[Mh] Termos MeSH primário: Nadadeiras de Animais/fisiologia
Perciformes/fisiologia
Comportamento Predatório
[Mh] Termos MeSH secundário: Aceleração
Nadadeiras de Animais/anatomia & histologia
Animais
Fenômenos Biomecânicos
Hidrodinâmica
Perciformes/anatomia & histologia
Reologia
Natação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170616
[Lr] Data última revisão:
170616
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170421
[St] Status:MEDLINE
[do] DOI:10.1242/jeb.145623


  10 / 654 MEDLINE  
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[PMID]:28422969
[Au] Autor:Andrade MC; Machado VN; Jégu M; Farias IP; Giarrizzo T
[Ad] Endereço:Universidade Federal do Pará, Cidade Universitária Professor José Silveira Netto, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia Aquática e Pesca, Laboratório de Biologia Pesqueira e Manejo dos Recursos Aquáticos, Belém, Pará, Brazil.
[Ti] Título:A new species of Tometes Valenciennes 1850 (Characiformes: Serrasalmidae) from Tocantins-Araguaia River Basin based on integrative analysis of molecular and morphological data.
[So] Source:PLoS One;12(4):e0170053, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A new large serrasalmid species of Tometes is described from the Tocantins-Araguaia River Basin. Tometes siderocarajensis sp. nov. is currently found in the rapids of the Itacaiúnas River Basin, and formerly inhabited the lower Tocantins River. The new species can be distinguished from all congeners, except from T. ancylorhynchus, by the presence of lateral space between 1st and 2nd premaxillary teeth, and by the absence of lateral cusps in these two teeth. However, T. siderocarajensis sp. nov. can be differentiated from syntopic congener T. ancylorhynchus by an entirely black with mottled red body in live specimens, densely pigmented pelvic fins with a high concentration of dark chromatophores, and the presence of 39 to 41 rows of circumpeduncular scales (vs. silvery body coloration with slightly reddish overtones on middle flank during breeding period in live specimens, hyaline to slightly pale coloration on distalmost region of pelvic fins, and 30 to 36 rows of circumpeduncular scales). Additionally, molecular sequence shows that T. siderocarajensis sp. nov. is reciprocally monophyletic, and diagnosable from all congeners by having two autapomorphic molecular characters in the mitochondrial gene COI. The phylogenetic reconstruction still show that T. siderocarajensis sp. nov. is closely related to T. trilobatus. This is the first molecular study using an integrative taxonomic approach based on morphological and molecular sequence data for all described species of Tometes. These findings increase the number of formally described species of Tometes to seven. A key to the Tometes species is provided.
[Mh] Termos MeSH primário: Caraciformes/classificação
Complexo IV da Cadeia de Transporte de Elétrons/genética
Especiação Genética
Proteínas Mitocondriais/genética
Filogenia
[Mh] Termos MeSH secundário: Nadadeiras de Animais/anatomia & histologia
Animais
Brasil
Caraciformes/anatomia & histologia
Caraciformes/genética
Feminino
Masculino
Rios
Dente/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mitochondrial Proteins); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170505
[Lr] Data última revisão:
170505
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170420
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0170053



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