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Gioster-Ramos ML, Pedrinha VF, Barros MC, Bezerra RM, Andrade FB, Kuga MC, Vaz LG. Antimicrobial effect of Pentaclethra Macroloba plant extract against Enterococcus Faecalis. BRAZ J BIOL 2023; 83:e272095. [PMID: 38055574 DOI: 10.1590/1519-6984.272095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 08/10/2023] [Indexed: 12/08/2023] Open
Abstract
This study evaluated the antimicrobial efficacy of a new intracanal drug based on Pentaclethra macroloba extract, a plant of Amazonian origin, against Enterococcus faecalis using macrodilution test and intratubular evaluation with Confocal Laser Scanning Microscopy (CLSM). The minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of the pure extract of Pentaclethra macroloba andits association with calcium hydroxide and ultracall were determined. Then, thirty-three dentin cylinders were prepared and inoculated with E. faecalis, to evaluate the antimicrobial effect of the medications on the dentinal tubules with CLSM. The data was analyzed using the Kruskal-Wallis and Dunn tests. The extract in association with calcium hydroxide showed a lower CBM, and in the intratubular test all tested medications were effective against E. faecalis (P >0.05). The new intracanal drug based on P. macroloba extract has an antimicrobial effect against E. faecalis and further studies are needed for its clinical use.
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Affiliation(s)
- M L Gioster-Ramos
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Odontologia, Departamento de Materiais Odontológicos e Prótese, Araraquara, SP, Brasil
| | - V F Pedrinha
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - M C Barros
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - R M Bezerra
- Universidade Federal do Amapá - UNIFAP, Laboratório de Bioprospecção e Absorção Atômica, Macapá, AP, Brasil
| | - F B Andrade
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - M C Kuga
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Odontologia, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | - L G Vaz
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Odontologia, Departamento de Materiais Odontológicos e Prótese, Araraquara, SP, Brasil
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Limeira-Filho D, Moraes PSS, Almeida MS, Silva ACC, Silva JLN, Farias-Rodrigues L, Teixeira BRS, Anjos JVX, Birindelli JLO, Barros MC, Fraga EC. Fish diversity in the rivers that drain the Baixada Maranhense and the Mearim basin in northeastern Brazil. BRAZ J BIOL 2023; 83:e273525. [PMID: 37909556 DOI: 10.1590/1519-6984.273525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 08/16/2023] [Indexed: 11/03/2023] Open
Abstract
The Baixada Maranhense Environmental Protection Area of the Brazilian state of Maranhão encompasses a biologically rich region that includes the basins of four principal rivers, the Mearim, Pericumã, Pindaré, and Turiaçu, which form a complex of wetlands. The present study provides a comprehensive inventory of the fish fauna of the rivers that drain the Baixada Maranhense based on the identification of voucher specimens that were deposited in a scientific collection. Expeditions were conducted between 2014 and 2020. The inventory identified a total of 100 fish species representing 79 genera, 34 families, and 11 orders, which are found in both freshwater and estuarine environments. Six (Potamotrygon orbignyi, Leporinus piau, Moenkhausia loweae, Serrasalmus spilopleura, Pachypops fourcroi and Peckoltia greedoi) of the 100 taxa identified here are considered to be new records for one or more of the basins surveyed during this study, based on the existing data, while four - Colossoma macropomum, Megaleporinus macrocephalus, Cichla sp. and Cichla kelberi - are not native. The most speciose orders were the Siluriformes and Characiformes, while the most diverse families were the Loricariidae, Characidae, Auchenipteridae, Cichlidae, and Serrasalmidae. These data are consistent with the findings of most of the previous studies of freshwater ecosystems in the Neotropical region, in particular those of the rivers of Maranhão. The results of the present study represent an important advance in the understanding of the diversity of the fish fauna of the Mearim, Pericumã, Pindaré, and Turiaçu rivers, which are still poorly studied, and have likely had their diversity underestimated up to now.
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Affiliation(s)
- D Limeira-Filho
- Universidade Estadual do Maranhão - UEMA, Centro de Ciências Agrárias-CCA, Programa de Pós-graduação em Ciência Animal - PPGCA, São Luís, MA, Brasil
| | - P S S Moraes
- Instituto Federal do Maranhão - IFMA, Departamento de Biologia, Campus Caxias, Caxias, MA, Brasil
| | - M S Almeida
- Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - A C C Silva
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
| | - J L N Silva
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
| | - L Farias-Rodrigues
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
| | - B R S Teixeira
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Departamento de Química e Biologia, Curso de Graduação em Ciências com Habilitação em Biologia, Caxias, MA, Brasil
| | - J V X Anjos
- Universidade Estadual de Londrina - UEL, Centro de Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Programa de Pós-graduação em Ciências Biológicas, Campus Universitário, Londrina, PR, Brasil
| | - J L O Birindelli
- Universidade Estadual de Londrina - UEL, Centro de Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Programa de Pós-graduação em Ciências Biológicas, Campus Universitário, Londrina, PR, Brasil
- Universidade Estadual de Londrina - UEL, Centro de Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Laboratório de Ictiologia, Londrina, PR, Brasil
| | - M C Barros
- Universidade Estadual do Maranhão - UEMA, Centro de Ciências Agrárias-CCA, Programa de Pós-graduação em Ciência Animal - PPGCA, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Departamento de Química e Biologia, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil
| | - E C Fraga
- Universidade Estadual do Maranhão - UEMA, Centro de Ciências Agrárias-CCA, Programa de Pós-graduação em Ciência Animal - PPGCA, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Departamento de Química e Biologia, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil
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3
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Silva RBD, Neves VR, Barros MC, Gambassi BB, Schwingel PA, Sobral Filho DC. Autonomic dysfunction in COVID-19 patients receiving mechanical ventilation: A cross-sectional study. SAO PAULO MED J 2023; 141:e2022513. [PMID: 37075456 PMCID: PMC10109544 DOI: 10.1590/1516-3180.2022.0513.r1.09022023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 02/09/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) can damage cardiac tissue by increasing troponin levels and inducing arrhythmias, myocarditis, and acute coronary syndrome. OBJECTIVES To analyze the impact of COVID-19 on cardiac autonomic control in mechanically ventilated intensive care unit (ICU) patients. DESIGN AND SETTING This cross-sectional analytical study of ICU patients of both sexes receiving mechanical ventilation was conducted in a tertiary hospital. METHODS Patients were divided into COVID-19-positive (COVID(+)) and COVID-19-negative (COVID(-)) groups. Clinical data were collected and heart rate variability (HRV) records obtained using a heart rate monitor. RESULTS The study sample comprised 82 subjects: 36 (44%) in the COVID(-) group (58.3% female; median age, 64.5 years) and 46 (56%) in the COVID(+) group (39.1% females; median age, 57.5 years). The HRV indices were lower than the reference values. An intergroup comparison identified no statistically significant differences in the mean normal-to-normal (NN) interval, standard deviation of the NN interval, or root mean square of successive differences in NN intervals. The COVID(+) group had an increased low frequency (P = 0.05), reduced high frequency (P = 0.045), and increased low frequency/high frequency (LF/HF) ratio (P = 0.048). There was a weak positive correlation between LF/HF and length of stay in the COVID(+) group. CONCLUSION Patients who received mechanical ventilation had lower overall HRV indices. COVID(+) patients who received mechanical ventilation had lower vagal HRV components. These findings likely indicate clinical applicability, as autonomic control impairments are associated with a greater risk of cardiac death.
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Affiliation(s)
- Renata Baltar da Silva
- PT, MSc. Physiotherapist and Doctoral Student, Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade de Pernambuco (UPE), Recife (PE), Brazil. Physiotherapist, Hospital das Clínicas of the Universidade Federal de Pernambuco (HC-UFPE), Empresa Brasileira de Serviços Hospitalares (EBSERH), Recife (PE), Brazil. Physiotherapist, Agamenon Magalhães Hospital (HAM), UPE, Recife (PE), Brazil
| | - Victor Ribeiro Neves
- PT, PhD. Physiotherapist and Adjunct Professor, Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGRDF), Universidade de Pernambuco (UPE), Petrolina (PE), Brazil
| | - Mayara Costa Barros
- PT. Physiotherapist and Master's Student, Programa de Pós-Graduação em Saúde Translacional (PPGST), Universidade Federal de Pernambuco (UFPE), Recife (PE), Brazil
| | - Bruno Bavaresco Gambassi
- PhD. Physical Educator and Adjunct Professor, Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde (MGPSS), Universidade Ceuma (UniCEUMA), São Luís (MA), Brazil
| | - Paulo Adriano Schwingel
- PhD. Sports Physiologist and Associate Professor, Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade de Pernambuco (UPE), Recife (PE), Brazil
| | - Dário Celestino Sobral Filho
- MD, PhD. Physician and Associate Professor, Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade de Pernambuco (UPE), Recife (PE), Brazil
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Pires WMM, Barros MC, Fraga EC. DNA Barcoding unveils cryptic lineages of Hoplias malabaricus from Northeastern Brazil. BRAZ J BIOL 2021; 81:917-927. [PMID: 33053129 DOI: 10.1590/1519-6984.231598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 04/29/2020] [Indexed: 11/22/2022] Open
Abstract
The trahira or wolf fish - Hoplias malabaricus- is a valid species, although recent cytogenetic and molecular studies have indicated the existence of a species complex. In this context, the present study analyzed the mitochondrial COI marker to determine the levels of genetic diversity of specimens from the Brazilian state of Maranhão, and verify the occurrence of distinct lineages within the study area. Samples were collected from the basins of the Turiaçu, Pindaré, Mearim, Itapecuru, and Parnaíba rivers. A 630-bp fragment was obtained from 211 specimens, with 484 conserved and 108 variable sites, and 60 haplotypes (Hd = 0,947; π = 0,033). The phylogenetic analyses indicated the existence of three distinct lineages of H. malabaricus from Maranhão. Genetic distances of 1.5-8.2% were found between all the populations analyzed, while the variation between haplogroups ranged from 2.1% to 7.7%. The AMOVA indicated that most of the molecular variation was found among groups, with high FST values. The high levels of genetic variability found in the present study are supported by the available cytogenetic data. These findings reinforce the need for the development of effective programs of conservation and management independently for each river basin, in order to preserve the genetic variability found in this taxon.
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Affiliation(s)
- W M M Pires
- Universidade Estadual do Maranhão - UEMA, Programa de Pós- Graduação em Biodiversidade Ambiente e Saúde, Laboratório de Genética e Biologia Molecular, Caxias, MA, Brasil.,Universidade Estadual do Maranhão - UEMA, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil
| | - M C Barros
- Universidade Estadual do Maranhão - UEMA, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil.,Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Caxias, MA, Brasil
| | - E C Fraga
- Universidade Estadual do Maranhão - UEMA, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil.,Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Caxias, MA, Brasil
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5
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Almeida MS, Moraes PSS, Nascimento MHS, Birindelli JLO, Assega FM, Barros MC, Fraga EC. New records of the occurrence of Megaleporinus macrocephalus () (Characiformes, Anostomidae) from the basins of the Itapecuru and Mearim rivers in Maranhão, Northeastern Brazil. BRAZ J BIOL 2021; 82:e232868. [PMID: 33681896 DOI: 10.1590/1519-6984.232868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 06/15/2020] [Indexed: 11/22/2022] Open
Abstract
The "piaussu", Megaleporinus macrocephalus is an anostomatid fish species native to the basin of the Paraguay River, in the Pantanal biome of western Brazil. However, this species has now been recorded in a number of other drainages, including those of the upper Paraná, Uruguay, Jacuí, Doce, Mucuri, and Paraíba do Sulrivers. This study presents two new records of the occurrence of M. macrocephalus, in the basins of the Itapecuru and Mearim rivers in the state of Maranhão, in the Brazilian Northeast. The piaussu is a large-bodied fish of commercial interest that is widely raised on fish farms, and its occurrence in the Itapecuru and Mearim rivers is likely the result of individuals escaping from fish tanks when they overflow during the rainy season. Morphological analyses and sequences of the Cytochrome Oxidase Subunit I (COI) gene confirmed the taxonomic identification of the specimens as M. macrocephalus. The COI sequences were 99.66% similar to those of M. macrocephalus deposited in the BOLDSystems database. These records extend the known distribution of M. macrocephalus to the basins of the Itapecuru and Mearim rivers in the Brazilian Northeast, highlighting a new case of introduction of exotic fish species into Brazilian river basins.
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Affiliation(s)
- M S Almeida
- Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Programa de Pós-Graduação em Recursos Aquáticos e Pesca, São Luís, MA, Brasil
| | - P S S Moraes
- Universidade Estadual do Maranhão - UEMA, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil
| | - M H S Nascimento
- Universidade Estadual do Maranhão - UEMA, Centro de Ciências Agrárias - CCA, Programa de Mestrado em Ciência Animal - CCMA, São Luís, MA, Brasil
| | - J L O Birindelli
- Universidade Estadual de Londrina, Departamento de Biologia Animal e Vegetal, Londrina, PR, Brasil
| | - F M Assega
- Universidade Estadual de Londrina, Departamento de Biologia Animal e Vegetal, Londrina, PR, Brasil
| | - M C Barros
- Universidade Estadual do Maranhão - UEMA, Laboratório de Genética e Biologia Molecular - GENBIMOL, Caxias, MA, Brasil
| | - E C Fraga
- Universidade Estadual do Maranhão - UEMA, Departamento de Química e Biologia, Programa de Pós-Graduação em Recursos Aquáticos e Pesca, São Luís, MA, Brasil
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Mendes SB, Lima ACS, Reis TS, Fraga EC, Barros MC. First record of Cynomops planirostris (Peters, 1865) (Chiroptera, Molossidae) from Maranhão state, Brazil, based on morphological and molecular data. BRAZ J BIOL 2019; 80:405-409. [PMID: 31389486 DOI: 10.1590/1519-6984.213968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 01/14/2019] [Indexed: 11/22/2022] Open
Abstract
Based on morphological and molecular data, we present the first record of Cynomops planirostris for the State of Maranhão. The specimen was collected in the Inhamum Municipal Environmental Protection Area in Maranhão, Brazil and characterized morphologically as an adult male with scrotal testicles, dorsal pelage reddish chestnut, with ventral pelage slightly lighter in color, forearm length 34.70-34.80mm dental formula i:1/1, c:1/1, pm:1/2, m:3/3 = 26. The sequence of the Cytochrome Oxidase I subunit (COI) molecular marker confirmed the morphological diagnosis of the specimen as C. planirostris with significant similarities. The combined analysis of both morphological and molecular confirmed the occurrence of C. planirostris in the Brazilian state of Maranhão, in the Cerrado biome and records extends the known geographic distribution of the species by 411.30 km.
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Affiliation(s)
- S B Mendes
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, CEP 65050-150, São Luís, MA, Brasil.,Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - A C S Lima
- Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - T S Reis
- Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - E C Fraga
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, CEP 65050-150, São Luís, MA, Brasil.,Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil.,Departamento de Química e Biologia, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - M C Barros
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, CEP 65050-150, São Luís, MA, Brasil.,Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil.,Departamento de Química e Biologia, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
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7
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Nascimento DC, Campos BATP, Fraga EC, Barros MC. Genetic variability of populations of the white-eared opossum, Didelphis albiventris Lund 1840 (Didelphimorphia; Didelphidae) in Brazil. BRAZ J BIOL 2018; 79:594-602. [PMID: 30379237 DOI: 10.1590/1519-6984.184842] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 02/10/2018] [Indexed: 11/22/2022] Open
Abstract
Didelphis albiventris are found throughout Northeast and Central Brazil to central-southern Uruguay and it was subject of few studies in a population level. Given this, the present study investigated the genetic variability of the species using the mitochondrial molecular marker cytochrome oxidase c subunit I. We analyzed samples from the different biomes within three Brazilian regions: Northeast (Caatinga , Cerrado, and Atlantic Forest), Southeast (Cerrado , Atlantic Forest, Cerrado/Atlantic Forest, and Cerrado/Caatinga ecotones) and South (Pampa and Atlantic Forest). Software BAPs retrieved five distinct demes: dm 1, dm 2, and dm 5 that occurs in South, Northeast and Southeast regions respectively and the dm 3 and dm 4 are wide distributed in Northeast and Southeast. Population analysis performed with AMOVA, haplotype network and Mantel test estimated the veracity of the demes. The FST shows structuring for the five demes, with dm 1 (South region) isolated from the others, however the other analysis showed the Northeast/Southeast demes (dm 2-5) united, diagnosing gene flow between them, mainly at the transitional zones, in areas as far away as areas with similar latitude interval (Southeast vs South) that was not detected gene flow. In the haplotype network, the mutational steps was conclusive in split dm1 from dm 2-5 with 15 mutational steps and the Mantel test was moderated, which is explained by genetic similarity despite the great geographic distances (Northeast/Southeast). Thus, our analysis recognized two different lineages (South and Northeast/Southeast) and indicate that the biomes were not decisive in their isolation. The sharing of demes at the transitional zones and in areas with high latitudinal intervals reflects a recent ancestral polymorphism for D. albiventris. The plasticity in the occupation of the space by this species contributes in its wide dispersion capability, that is, geographical distribution. Our results revealed important implications for the management of D. albiventris in these transitional zones areas where demes were shared.
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Affiliation(s)
- D C Nascimento
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, São Luís, MA, Brasil.,Centro de Estudos Superiores de Caxias - CESC, Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - B A T P Campos
- Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - E C Fraga
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, São Luís, MA, Brasil.,Centro de Estudos Superiores de Caxias - CESC, Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil.,Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
| | - M C Barros
- Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, São Luís, MA, Brasil.,Centro de Estudos Superiores de Caxias - CESC, Laboratório de Genética e Biologia Molecular - GENBIMOL, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil.,Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil
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Luz LA, Reis LL, Sampaio I, Barros MC, Fraga E. Genetic differentiation in the populations of red piranha, Pygocentrus nattereri Kner (1860) (Characiformes: Serrasalminae), from the river basins of northeastern Brazil. BRAZ J BIOL 2015; 75:838-45. [PMID: 26675902 DOI: 10.1590/1519-6984.00214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 07/18/2014] [Indexed: 11/21/2022] Open
Abstract
The red piranha, Pygocentrus nattereri, is an important resource for artisanal and commercial fisheries. The present study determines the genetic differentiation among P. nattereri populations from the northeastern Brazilian state of Maranhão. The DNA was isolated using a standard phenol-chloroform protocol and the Control Region was amplified by PCR. The PCR products were sequenced using the didesoxyterminal method. A sequence of 1039 bps was obtained from the Control Region of 60 specimens, which presented 33 polymorphic sites, 41 haplotypes, һ =0.978 and π =0.009. The neutrality tests (D and Fs) were significant (P < 0.05) for most of the populations analyzed. The AMOVA indicated that most of the molecular variation (72%) arises between groups. The fixation index was highly significant (FST = 0.707, P < 0.00001). The phylogenetic analyses indicated that the specimens represented a monophyletic group. Genetic distances between populations varied from 0.8% to 1.9%, and were <0.5% within populations. The degree of genetic differentiation found among the stocks of P. nattereri indicates the need for the development of independent management plans for the different river basins in order to preserve the genetic variability of their populations.
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Affiliation(s)
- L A Luz
- Centro de Ciências Agrárias, Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | - L L Reis
- Centro de Ciências Agrárias, Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | - I Sampaio
- Instituto de Estudos Costeiros, Universidade Federal do Pará, Bragança, PA, Brazil
| | - M C Barros
- Centro de Ciências Agrárias, Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | - E Fraga
- Centro de Ciências Agrárias, Universidade Estadual do Maranhão, São Luís, MA, Brazil
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Barros MC, Fraga EC, Birindelli JLO. Fishes from the Itapecuru River basin, state of Maranhão, northeast Brazil. BRAZ J BIOL 2011; 71:375-80. [PMID: 21755154 DOI: 10.1590/s1519-69842011000300006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 05/26/2010] [Indexed: 11/22/2022] Open
Abstract
The Itapecuru is a relatively large river in the northeastern Brazilian state of Maranhão. During several expeditions to this basin, we collected 69 fish species belonging to 65 genera, 29 families and 10 orders. Characiformes and Siluriformes were the orders with the largest number of species and Characidae, Loricariidae, Cichlidae, Auchenipteridae and Pimelodidae were the richest families. About 30% of the fish fauna of the Itapecuru basin is endemic or restricted to northeastern Brazil. Just over a fifth (22%) of the species is also known to occur in the Amazon basin and only a few are more widely distributed in South American.
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Affiliation(s)
- M C Barros
- Laboratório de Genética e Biologia Molecular, Centro de Estudos Superiores de Caxias, Universidade Estadual do Maranhão, Caxias, MA, Brazil, 65604-380.
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Barros MC, Bello P, Roca E, Casares JJ. Integrated pollution prevention and control for heavy ceramic industry in Galicia (NW Spain). J Hazard Mater 2007; 141:680-92. [PMID: 16963182 DOI: 10.1016/j.jhazmat.2006.07.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Revised: 07/13/2006] [Accepted: 07/17/2006] [Indexed: 05/11/2023]
Abstract
The heavy ceramic industry (building materials and refractory products manufacture) is an important source of pollutants to the environment. For this reason these industrial sub-sectors are included in prevention and control pollution policies, specifically those of the European Union. The IPPC Directive pays particular attention to the mineral industries, not least to the ceramic industry (epigraph 3.5, Annex I). In this paper, a methodology which is being applied to support IPPC installations and the competent administrative authority in Galicia (NW Spain) is presented. For that, the Galician heavy ceramic industry is analysed, as also are the ways to study the Best Available Techniques (BAT) with a view to establishing the emission limit values (ELV) for each specific case. Hence, a technological state of the art has been carried out for both sub-sectors, from the point of view of implementation of the IPPC in Galicia. Following this, the processes are described briefly and an analysis of the consumption and emission levels of the main pollutants is made. An inventory that includes the best environmental practices and the preventive and abatement candidate techniques as BAT was elaborated for both considered sub-sectors. An information data sheet for each candidate BAT is presented as a method to help both the industries and the competent authority to identify a candidate technique of the inventory as BAT. Three illustrative examples of the application of this procedure are presented for different emissions to environmental media for Galician installations.
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Affiliation(s)
- M C Barros
- Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Rúa Lope Gómez de Marzoa, s/n, E-15782 Santiago de Compostela, Spain
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