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| Sofia,Silvia H.; Galindo,Bruno A.; Paula,Francine M.; Sodré,Leda M.K.; Martinez,Cláudia B.R.. |
| In this study, random amplified polymorphic DNA (RAPD) markers were applied to analyze the genetic diversity of samples of the Neotropical catfish Hypostomus ancistroides, collected from four sites (S1, S2, S3 and S4) along an urban stream in Southern Brazil. The 11 primers used in RAPD analysis amplified 147 loci, 76 (51.7%) of which were polymorphic. The proportions of polymorphic loci observed in the four samples were: 29.93% (S1), 31.97% (S2), 23.81% (S3) and 38.77% (S4). The average heterozygosity within sampling localities ranged from 0.1230 to 0.1526 and unbiased genetic distances ranged from 0.0253 to 0.0445. AMOVA partitioned 90.85% of the total variation within samples and 9.15% among samples. Excepting for the sample pair S1-S2 (phiST = 0.02784;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Loricariid fish; Genetic diversity; RAPD; Siluriformes. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200027 |
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| Garcia,Thiago D.; Ota,Renata R.; Ferreira,Dhiego G.; Nascimento,Raul H. C.; Galindo,Bruno A.; Pereira,Larissa S.; Zanatta,Augusto S.. |
| ABSTRACT When a river is dammed, impacts differ according to distance from the dam under consideration, and sites closer to the dam are more affected than distant ones. Damming a river changes the flow and landscape characteristics, which, in turn, change the hydrological, limnological and ecological dynamics, such as biological production, species distribution, and ecosystem structuring, functioning and services. This study evaluates the distribution pattern of the Siluriformes (catfish) fish species near a small hydroelectric power plant in the Jaguariaíva River, considering three distinct distances from the dam: upstream region, reservoir and downstream region. Samples were taken with gillnets between March 2013 and December 2014. The abundance and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish assemblage; Ichthyofauna; Catfish; Paraná basin; Reservoir. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100205 |
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| Apolinário-Silva,Caroline; Ferreira,Dhiego G.; Cavenagh,Analiza F.; Aprígio,Nícollas G. O.; Galindo,Bruno A.; Carlsson,Jens; Sofia,Silvia H.. |
| ABSTRACT Data on 15 novel microsatellite loci from the Neotropical fish Bryconamericus aff. iheringii are presented here. Analyses of 32 individuals from four different streams revealed 192 different alleles, ranging from four to 32 alleles per locus (mean of 12.8 per locus). Observed and expected heterozygosities ranged from 0.094 to 0.813 and 0.205 to 0.952, respectively. These loci showed high polymorphic information content and will be a resource for genetic studies of B. aff. iheringii. Furthermore, several loci also amplified other small Neotropical Characidae (Piabarchus stramineus and Piabina argentea) and should be useful for these species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Lambarizinho; Molecular markers; Neotropical fish; SSR. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100218 |
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| Galindo,Bruno A.; Ferreira,Dhiego G.; Apolinário-Silva,Caroline; Terra,Mariana C.; Aprígio,Nícollas G. O.; Ota,Renata R.; Ohara,Willian M.; Almeida,Fernanda S.; Sofia,Silvia H.. |
| ABSTRACT Brycon nattereri is an endangered Neotropical fish reported along conserved stretches of the upper Paraná, Tocantins and São Francisco rivers. Populations of this species have been very rare in some Paraná River sub basins. This study analyzes the genetic diversity and population structure of B. nattereri in a restricted area of occurrence recently identified in upper Paraná River basin. Seven microsatellite loci and 497 bp of D-Loop mitochondrial region were examined in 92 individuals from four points along the area of occurrence. Both molecular markers indicated a single population distributed along a stretch of the river approximately 80 km long. Although some of the data suggest an ancient bottleneck, current levels of genetic diversity (H E... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Endangered species; Molecular markers; Population genetics; Pirapitinga. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100208 |
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| Souza-Shibatta,Lenice; Ferreira,Dhiego G.; Santos,Kátia F.; Galindo,Bruno A.; Shibatta,Oscar A.; Sofia,Silvia H.; Giacomin,Renata M.; Bastos,Douglas A.; Mendes-Júnior,Raimundo N. G.; Santana,Carlos David de. |
| Abstract Fourteen novel microsatellite loci are described and characterized in two species of electric eels, Electrophorus variiand E. voltaifrom floodplains and rivers of the Amazon rainforest. These loci are polymorphic, highly informative, and have the capacity to detect reliable levels of genetic diversity. Likewise, the high combined probability of paternity exclusion value and low combined probability of genetic identity value obtained demonstrate that the new set of loci displays suitability for paternity studies on electric eels. In addition, the cross-amplification of electric eel species implies that it may also be useful in the study of the closely related E. electricus, and to other Neotropical electric fishes (Gymnotiformes) species as tested... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Rainforest; Electrophorus; Genetic diversity; Gymnotiformes; SSR. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000400202 |
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