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A river runs through it: The causes, consequences, and management of intraspecific diversity in river networks ArchiMer
Blanchet, Simon; Prunier, Jérôme G.; Paz‐vinas, Ivan; Saint‐pé, Keoni; Rey, Olivier; Raffard, Allan; Mathieu‐bégné, Eglantine; Loot, Géraldine; Fourtune, Lisa; Dubut, Vincent.
Rivers are fascinating ecosystems in which the eco‐evolutionary dynamics of organisms are constrained by particular features, and biologists have developed a wealth of knowledge about freshwater biodiversity patterns. Over the last 10 years, our group used a holistic approach to contribute to this knowledge by focusing on the causes and consequences of intraspecific diversity in rivers. We conducted empirical works on temperate permanent rivers from southern France, and we broadened the scope of our findings using experiments, meta‐analyses, and simulations. We demonstrated that intraspecific (genetic) diversity follows a spatial pattern (downstream increase in diversity) that is repeatable across taxa (from plants to vertebrates) and river systems. This...
Tipo: Text Palavras-chave: Conservation genetics; Dendritic networks; Eco‐evolutionary dynamics; Ecosystem services; Intraspecific diversity.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00617/72935/71954.pdf
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Allelic diversity in populations of Solanum lycocarpum A. St.-Hil (Solanaceae) in a protected area and a disturbed environment Acta Botanica
Moura,Tânia Maria de; Sebbenn,Alexandre Magno; Martins,Karina; Moreno,Maria Andreia; Oliveira,Giancarlo Conde Xavier; Chaves,Lázaro José; Kageyama,Paulo Yoshio.
This study aimed to compare the genetic diversity of populations of Solanum lycocarpum A.St.-Hil between natural and human disturbed environments, with the assumption that protected areas have greater genetic diversity than disturbed areas. For this study, two populations were sampled in Goiás State, Brazil. One was located in a conservation unit, Serra de Caldas Novas State Park, in the Caldas Novas municipality. The other was located in a pasture area in the municipality of Morrinhos. The two populations are 41 km apart. We sampled 60 individuals from each population, which were genotyped with five microsatellite loci (SSR). The highest number of alleles was recorded in the population of the conservation unit, where we found 11 exclusive and five rare...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Gene flow; Conservation genetics; Genetic diversity.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400023
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Contemporary pollen and seed dispersal in natural populations of Bertholletia excelsa (Bonpl.) Repositório Alice
BALDONI, A. B.; WADT, L. H. O.; CAMPOS, T.; SILVA, V. S.; AZEVEDO, V. C. R.; MATA, L. R.; BOTIN, A. A.; MENDES, N. O.; TARDIN, F. D.; TONINI, H.; HOOGERHEIDE, E. S. S.; SEBBENN, A. M..
Due to the nutritional content and commercial value of its seeds, Bertholletia excelsa is one of the most important species exploited in the Amazon region. The species is hermaphroditic, insect pollinated, and its seeds are dispersed by barochory and animals. Because the fruit set is dependent on natural pollinator activity, gene flow plays a key role in fruit production. However, to date, there have been no studies on pollen and seed flow in natural populations of B. excelsa. Herein, we used microsatellite loci and parentage analysis to investigate the spatial genetic structure (SGS), realized pollen and seed dispersal, and effective pollen dispersal for two B. excelsa populations in the Brazilian Amazon forest. Two plots were established in natural...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Conservation genetics; Genética de conservação; Genética populacional; Fluxo de genes; Árvore tropical; Endogamia; Método de melhoramento; Polinização; Dispersão de semente; Population genetics; Gene flow.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076089
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Fine-scale spatial genetic structure of Dalbergia nigra (Fabaceae), a threatened and endemic tree of the Brazilian Atlantic Forest Genet. Mol. Biol.
Buzatti,Renata Santiago de Oliveira; Ribeiro,Renata Acácio; Lemos Filho,José Pires de; Lovato,Maria Bernadete.
The Atlantic Forest is one of the most diverse ecosystems in the world and considered a hotspot of biodiversity conservation. Dalbergia nigra (Fabaceae) is a tree endemic to the Brazilian Atlantic Forest, and has become threatened due to overexploitation of its valuable timber. In the present study, we analyzed the genetic diversity and fine-scale spatial genetic structure of D. nigra in an area of primary forest of a large reserve. All adult individuals (N = 112) were sampled in a 9.3 ha plot, and genotyped for microsatellite loci. Our results indicated high diversity with a mean of 8.6 alleles per locus, and expected heterozygosity equal to 0.74. The co-ancestry coefficients were significant for distances among trees up to 80 m. The Sp value was equal to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dalbergia nigra; Atlantic Forest; Conservation genetics; Fine-scale spatial genetic structure; Sp statistic.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500019
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Genetic characterization of Bhutanese native chickens based on an analysis of Red Junglefowl (Gallus gallus gallus and Gallus gallus spadecieus), domestic Southeast Asian and commercial chicken lines (Gallus gallus domesticus) Genet. Mol. Biol.
Dorji,Nedup; Duangjinda,Monchai; Phasuk,Yupin.
The genetic diversity of Bhutanese chickens needs to be understood in order to develop a suitable conservation strategy for these birds in Bhutan. In this, work, we used microsatellite markers to examine the genetic diversity of Bhutanese chickens. Four Bhutanese chicken varieties (Black plumage, Frizzle, Naked neck and Red Junglefowllike, corresponding to Yuebjha Narp, Phulom, Khuilay and Seim, respectively), two subspecies of Red Junglefowl (Gallus gallus gallus and Gallus gallus spadecieus), two varieties of Thai native chickens (Pradhu Hang Dam and Chee; Gallus gallus domesticus) representing the Southeast Asian domestic chicken, and two commercial lines (Broiler and Single Comb White Leghorn) were genotyped with 18 microsatellites that included 16...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Genetic comparisons; Genetic variability; Microsatellites.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000400010
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Genetic characterization of the Moxotó goat breed using RAPD markers. Repositório Alice
OLIVEIRA, R.R. de; EGITO, A.A. do; RIBEIRO, M.N.; PAIVA, S.R.; ALBUQUERQUE, M. do S.M.; CASTRO, S.R.; MARIANTE, A. da S.; ADRIÃO, M..
The objective of this study was to verify the genetic diversity between and within seven populations of Moxotó goat (n = 264) from the States of Pernambuco, Paraíba and Rio Grande do Norte, using RAPD (Random Amplified Polymorphic DNA). Moxotó, as well as other naturalized breeds, suffers genetic losses due to the indiscriminate miscegenation with breeds raised in the Northeast Region of Brazil. The genetic characterization of these genetic resources is essential to conservation and breeding programs. DNA was extracted from lymphocytes using a non-organic protocol. The 16 primers used were selected from 120 decamer oligonucleotide primers and generated 56 polymorphic bands. The analysis of molecular variance (AMOVA) showed that the greater part of total...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Capra hircus; Native breeds; Population structure; Conservation genetics; Raças nativas; Estrutura de populações; Conservação genética.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/113875
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Genetic characterization of the Moxotó goat breed using RAPD markers PAB
Oliveira,Rejane Rodrigues de; Egito,Andréa Alves do; Ribeiro,Maria Norma; Paiva,Samuel Rezende; Albuquerque,Maria do Socorro Maués; Castro,Silvia Ribeiro; Mariante,Arthur da Silva; Adrião,Manuel.
The objective of this study was to verify the genetic diversity between and within seven populations of Moxotó goat (n = 264) from the States of Pernambuco, Paraíba and Rio Grande do Norte, using RAPD (Random Amplified Polymorphic DNA). Moxotó, as well as other naturalized breeds, suffers genetic losses due to the indiscriminate miscegenation with breeds raised in the Northeast Region of Brazil. The genetic characterization of these genetic resources is essential to conservation and breeding programs. DNA was extracted from lymphocytes using a non-organic protocol. The 16 primers used were selected from 120 decamer oligonucleotide primers and generated 56 polymorphic bands. The analysis of molecular variance (AMOVA) showed that the greater part of total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capra hircus; Native breeds; Population structure; Conservation genetics.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000300006
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Genetic characterization of the Neotropical catfish Pimelodus maculatus (Pimelodidae, Siluriformes) in the Upper Uruguay River Genet. Mol. Biol.
Ribolli,Josiane; Melo,Cláudio Manoel Rodrigues de; Zaniboni-Filho,Evoy.
Freshwater fish present unique challenges when one attempts to understand the factors that determine the structure of their populations. Habitat fragmentation is a leading cause of population decline that threatens ecosystems worldwide. In this study, we investigated the conservation status of genetic variability in the Neotropical catfish (Pimelodus maculatus). Specifically, we examined the structure and genetic diversity of this species in a region of the Upper Uruguay River fragmented by natural barriers and dams. There was no genetic structure among the four sites analyzed, indicating the existence of only one population group. A combination of environmental management and genetic monitoring should be used to minimize the impact of impoundment on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Dams; Habitat fragmentation; Microsatellite.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500009
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Genetic differentiation in Aspidosperma polyneuron (Apocynaceae) over a short geographic distance as assessed by AFLP markers. Repositório Alice
DAMASCENO, J. O; RUAS, E. A.; RODRIGUES, L. A.; RUAS, C. F.; BIANCHINI, E.; PIMENTA, J. A.; RUAS, P. M..
Studies on intraspecific variation can contribute to the development of conservation strategies by identifying units of conservation for threatened species. Aspidosperma polyneuron is a tropical tree of seasonal semideciduous forests that is currently endangered and protected because it has been heavily logged for lumber, although it was once common in Brazil and neighboring countries. We investigated genetic structure in two samples of A. polyneuron collected from steep hillsides and from flat areas of a natural forest fragment in northern Paraná State, Brazil.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genética da conservação; AFLPs; Variabilidade genética; Fragmento de floresta tropical; Conservation genetics; Genetic variability; Tropical forest fragment.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/950260
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Genetic diversity and population structure of bocachico Prochilodus magdalenae (Pisces, Prochilodontidae) in the Magdalena River basin and its tributaries, Colombia Genet. Mol. Biol.
Berdugo,Gilberto Orozco; Narváez Barandica,Juan C..
Prochilodus magdalenae is an endemic freshwater fish that occurs in the Magdalena, Sinú and Atrato hydrographic basins. It has an important economic role and is a food resource for the artisanal fishing communities. Its socioeconomic importance contrasts with the current status of its fisheries, where stocks are being depleted. Considering its importance and lack of information on its genetic structure, we used seven microsatellite markers to assess the genetic structure of wild populations of P. magdalenae. The genetic diversity was assessed and the population genetic structure was estimated through Fst, analysis of molecular variance and Bayesian analysis. A total of 290 alleles were found in all loci throughout all population. The high polymorphism...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical fish; Microsatellite; Conservation genetics; Population genetics.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100008
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Genetic structure in two northern muriqui populations (Brachyteles hypoxanthus, Primates, Atelidae) as inferred from fecal DNA Genet. Mol. Biol.
Fagundes,Valéria; Paes,Marcela F.; Chaves,Paulo B.; Mendes,Sérgio L.; Possamai,Carla de B.; Boubli,Jean P.; Strier,Karen B..
We assessed the genetic diversity of two northern muriqui (Brachyteles hypoxanthus Primata, Atelidae) populations, the Feliciano Miguel Abdala population (FMA, n = 108) in the Brazilian state of Minas Gerais (19°44' S, 41°49' W) and the Santa Maria de Jetibá population (SMJ, n = 18) in the Brazilian state of Espírito Santo (20°01' S, 40°44' W). Fecal DNA was isolated and PCR-RFLP analysis used to analyze 2160 bp of mitochondrial DNA, made up of an 820 bp segment of the gene cytochrome c oxidase subunit 2 (cox2, EC 1.9.3.1), an 880 bp segment of the gene cytochrome b (cytb, EC 1.10.2.2) and 460 bp of the hypervariable segment of the mtDNA control region (HVRI). The cox2 and cytb sequences were monomorphic within and between populations whereas the HVRI...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Brachyteles; Conservation genetics; Fecal DNA; MtDNA; PCR-RFLP.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100028
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Genetic variability in local Brazilian horse lines using microsatellite markers. Repositório Alice
SILVA, A. C. M.; PAIVA, S. R.; ALBUQUERQUE, M. S. M.; EGITO, A. A. do; SANTOS, S. A.; LIMA, F. C.; CASTRO, S. T.; MARIANTE, A. da S.; CORREA, P. S.; MCMANUS, C. M..
Genetic variability at 11 microsatellite markers was analyzed in five naturalized/local Brazilian horse breeds or genetic groups. Blood samples were collected from 328 animals of the breeds Campeira (Santa Catarina State), Lavradeira (Roraima State), Pantaneira (Pantanal Mato-Grossense), Mangalarga Marchador (Minas Gerais State), as well as the genetic group Baixadeiro (Maranhão State), and the exotic breeds English Thoroughbred and Arab. We found significant genetic variability within evaluated microsatellite loci, with observed heterozygosis varying between 0.426 and 0.768 and polymorphism information content values of 0.751 to 0.914. All breeds showed high inbreeding coefficients and were not in Hardy-Weinberg equilibrium. The smallest genetic distance...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Animal genetic resources; Conservation genetics; Equus caballus; Livestock; Molecular markers.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/931531
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Genetic Variability of Brycon hilarii in a Repopulation Program BABT
Bignardi,Annaiza Braga; Povh,Jayme Aparecido; Alves,Mariana Srucki; Goes,Elenice Souza dos Reis; Filho,Ruy Alberto Caetano Corrêa; Castro,Reinaldo José; Barrero,Nelson Mauricio Lopera.
ABSTRACT Brycon hilarii, popularly called piraputanga in Brazil, is a species distributed throughout the whole basin of the river Paraguay. In recent years, the species has been on a repopulation program due to its remarkable decline as a wild species in the region. Assessment of the genetic diversity of broodstock and fingerling stocks in repopulation programs is basic to avoid genetic impacts on wild populations. The genetic variability of the wild population and of the broodstock and fingerling stocks of B. hilarii in a repopulation program in the river Itiquira MT Brazil will be determined. Seven microsatellite loci produced 52 polymorphic alleles and heterozygosity revealed rates between 0.5794 and 0.7204. FIS did not register any endogamy in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Microsatellites; Piraputanga.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100424
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Genetic variability of the Brazilian hair sheep breeds. Repositório Alice
PAIVA, S.R.; SILVÉRIO, V.C.; EGITO, A.A.; McMANUS, C.; FARIA, D.A.; MARIANTE, A. da S.; CASTRO, S.R.; ALBUQUERQUE, M. do S.M.; DERGAM, J.A..
The objectives of this work were to investigate the genetic structure of the Brazilian hair sheep breeds and to determine the origin of the Santa Inês breed. Molecular similarity was determined using Randomly Amplified Polymorphic DNA - Polymerase Chain Reaction markers in 238 individuals from five naturalized sheep breeds: Santa Inês (48 animals), Rabo Largo (48), Somali (48), Morada Nova (48) and Bergamasca (46), collected in Goiás, Sergipe, Bahia, and Ceará States as well as in the Federal District. Fifty-four loci were selected from 19 primers, after a pilot test using 140 primers. Qualitative analyses indicate diagnostic markers for all breeds. All breeds were significantly different from each other. Interbreed differences were explained by 14.92% of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ovis aries; Conservation genetics; Domestic animal diversity; Molecular markers; RAPD; Genética da conservação; Diversidade de animais domésticos; Marcadores moleculares.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/116472
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Genetic variability of the Brazilian hair sheep breeds PAB
Paiva,Samuel Rezende; Silvério,Vanessa Chaves; Egito,Andréa Alves; McManus,Concepta; Faria,Danielle Assis de; Mariante,Arthur da Silva; Castro,Sílvia Ribeiro; Albuquerque,Maria do Socorro Maués; Dergam,Jorge Abdala.
The objectives of this work were to investigate the genetic structure of the Brazilian hair sheep breeds and to determine the origin of the Santa Inês breed. Molecular similarity was determined using Randomly Amplified Polymorphic DNA - Polymerase Chain Reaction markers in 238 individuals from five naturalized sheep breeds: Santa Inês (48 animals), Rabo Largo (48), Somali (48), Morada Nova (48) and Bergamasca (46), collected in Goiás, Sergipe, Bahia, and Ceará States as well as in the Federal District. Fifty-four loci were selected from 19 primers, after a pilot test using 140 primers. Qualitative analyses indicate diagnostic markers for all breeds. All breeds were significantly different from each other. Interbreed differences were explained by 14.92% of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ovis aries; Conservation genetics; Domestic animal diversity; Molecular markers; RAPD.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000900008
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Genomic resources for the conservation and management of the harpy eagle (Harpia harpyja, Falconiformes, Accipitridae) Genet. Mol. Biol.
Banhos,Aureo; Hrbek,Tomas; Gravena,Waleska; Sanaiotti,Tânia; Farias,Izeni P..
We report the characterization and optimization of 45 heterologous microsatellite loci, and the development of a new set of molecular sex markers for the conservation and management of the Neotropical harpy eagle (Harpia harpyja L. 1758). Of the 45 microsatellites tested, 24 were polymorphic, six monomorphic, 10 uncharacterizable due to multiple bands and five did not amplify. The observed gene diversity of the analyzed sample of H. harpyja was low and similar to that of other threatened Falconiformes. While a high proportion of the microsatellite markers were highly variable, individuals of H. harpyja could be differentiated by a joint analysis of just three (p = 2.79 x 10-4) or four markers (p = 2.89 x 10-5). Paternity could be rejected with 95.23% and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Harpia harpyja; Microsatellites; Raptors; Sex markers.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100025
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Hybrids between Pseudoplatystoma corruscans and P. reticulatum (Siluriformes: Pimelodidae) previously reported in the Upper Paraná River are likely escapes from aquaculture farms: evidence from microsatellite markers Rev. Bras. Zool.
Baggio,Rafael A.; Moretti,Caroline B.; Bialetzki,Andréa; Boeger,Walter A..
ABSTRACT The production of hybrids of the 'pintado', Pseudoplatystoma corruscans (Spix & Agassiz, 1829) and 'cachara', Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) in captivity has generated many concerns about the possibility of introduction of farmed hybrids into natural environments. In the last decade, hybrids between these species, known as 'pintachara' or 'cachapinta', were reported from different regions of the Upper Paraná River basin. Prospection of these hybrids is important in order to orient conservation programs for the species involved. Knowledge of the presence of these hybrids will direct conservation strategies towards prevention and/or mitigation of the effects of cross breeding in natural populations of P....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Fish larvae; Interspecific hybrids; Introgression; Molecular markers.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000201303
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Iberian origin of Brazilian local pig breeds based on Cytochrome b (MT-CYB) sequence. Repositório Alice
SOUZA, C. A.; PAIVA, S. R.; PEREIRA, R. W.; GUIMARÃES, S. E. F.; DUTRA JUNIOR, W. M.; MURATA, L. S.; MARIANTE, A. da S..
bitstream/item/178629/1/SP-19910-ID-32667.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Conservation genetics; Livestock evolution; MtDNA; Sus scrofa; Genetic resources.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/783701
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Landscape genomic approach to detect selection signatures in locally adapted Brazilian swine genetic groups. Repositório Alice
CESCONETO, R. J.; JOOST, S.; MCMANUS, C. M.; PAIVA, S. R.; COBUCI, J. A.; BRACCINI, J..
bitstream/item/171097/1/ECE3-7-9544.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Animal genetic resources; Conservation genetics; Molecular markers; Population structure; Sus scrofa.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085451
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Mitochondrial DNA variation in wild populations of Leporinus elongatus from the Paraná River basin Genet. Mol. Biol.
Martins,Cesar; Wasko,Adriane P.; Oliveira,Claudio; Foresti,Fausto.
Leporinus elongatus, a fish species widely distributed throughout the Paraná River basin in South America, is an important fishery resource and a valuable species in aquaculture programs. Despite its great economic importance, several wild populations have been suffering a drastic reduction. The comprehension of its population structure represents an important step for the conservation of these organisms in natural environments, and also for the selection of wild stocks to be used in hatchery programs. In order to understand the genetic-population structure of L. elongatus, D-loop mitochondrial DNA analyses were applied in six wild populations of the species. The results were used to estimate the levels of within and among population genetic variability....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; D-loop; Genetic variability; Leporinus elongatus; MtDNA.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100006
Registros recuperados: 32
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