Consulta: creatorFacets:"Ferreira,Anderson"
Registros recuperados: 6
Data/hora: 01/06/2024 01:27:32

Diet of Astyanax paranae (Characidae) in streams with different riparian land covers in the Passa-Cinco River basin, southeastern Brazil
Provedor de dados: 76
Autores: Ferreira,Anderson; Gerhard,Pedro; Cyrino,José E. P.
An analysis of the diet of Astyanax paranae Eigenmann, 1914 in nine streams located in the Passa-Cinco River basin (upper Paraná River system) was performed to investigate the feeding habits of this species, check for possible spatial variations in diet and to investigate the influence of riparian vegetation in the composition of the diet. Stomach contents of 243 specimens were analyzed by the methods of relative frequency of occurrence and volume, and the diet was characterized by the alimentary index (AIi). The species showed insectivorous feeding habits, with a predominance of terrestrial and aquatic insects in the diet, varying by location. In most streams, resources of allochthonous origin were the most consumed. The participation of aquatic insects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Characiformes; Insectivorous fishes; Habitat features.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100011

Microsatellite genotyping from faeces of Lontra longicaudis from southern Brazil
Provedor de dados: 76
Autores: Weber,Laura I.; Hildebrand,Cintia G.; Ferreira,Anderson; Pedarassi,Gustavo; Levy,José A.; Colares,Elton P.
A genetic study of the neotropical river otter Lontra longicaudis (Olfers, 1818), which has an unknown conservation status, was carried out at the Taim Ecological Station and the margins of the Vargas stream, Rio Grande do Sul, southern Brazil. Faecal samples were collected, and DNA was extracted using a silica-guanidine method. Five microsatellite loci were amplified using PCR with heterologous primers previously described for Lutra lutra (Linnaeus, 1758). Sixteen faecal samples out of 29 from Taim and 11 out of 14 from Vargas stream margins contained enough DNA for genetic analysis. A total of 49 different alleles were found at both localities, from which 18 were exclusively found in individuals from Taim and 17 were exclusives from Vargas individuals....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical river otter; Genetic markers; Taim; Non-invasive sampling; Genetic diversity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000100001

Diversidade genética de Tibraca limbativentris Stål (Hemiptera: Pentatomidae) de Santa Catarina e do Rio Grande do Sul, usando marcadores RAPD
Provedor de dados: 82
Autores: Rampelotti,Fátima T.; Ferreira,Anderson; Tcacenco,Fernando A.; Martins,José F. da S.; Grützmacher,Anderson D.; Prando,Honório F.
O trabalho objetivou testar protocolos de extração de DNA e caracterizar populações de Tibraca limbativentris, Stål, importante inseto-praga do arroz. Os insetos foram coletados em Joinville, Rio do Oeste e Turvo, em Santa Catarina, e Agudo, Uruguaiana, Pelotas e Palmares do Sul, no Rio Grande do Sul. Testaram-se seis protocolos de extração de DNA citados na literatura, e um novo protocolo adequado à espécie em questão. DNA de dez indivíduos de cada população foi extraído usando o melhor protocolo e reações de RAPD foram realizadas com dez iniciadores. O novo protocolo mostrou os melhores resultados e foi utilizado nas reações de PCR, que geraram 151 bandas polimórficas, permitindo acessar diferenças genéticas entre todas as populações; não ocorreram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Percevejo-do-colmo; Arroz irrigado; Marcador molecular.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000100004

Colonization of rice and Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) larvae by genetically modified endophytic Methylobacterium mesophilicum
Provedor de dados: 82
Autores: Rampelotti-Ferreira,Fátima T; Ferreira,Anderson; Vendramim,José D; Lacava,Paulo T; Azevedo,João L; Araújo,Welington L.
The colonization of Spodoptera frugiperda J.E. Smith larvae and rice seedlings by genetically modified endophytic bacterium Methylobacterium mesophilicum, and also the possible transfer of this bacterium to inside the larva's body during seedlings consumption were studied. The data obtained by bacterial reisolation and fluorescence microscopy showed that the bacterium colonized the rice seedlings, the larva's body and that the endophytic bacteria present in seedlings could be acquired by the larvae. In that way, the transference of endophytic bacterium from plants to insect can be a new and important strategy to insect control using engineered microorganisms.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Insecta; Oryza sativa; Endophytic microorganism.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000200026

Land use change in the Atlantic Forest affects carbon and nitrogen sources of streams as revealed by the isotopic composition of terrestrial invertebrates
Provedor de dados: 49
Autores: Augusto,Fernanda Gaudio; Tassoni Filho,Mauricio; Ferreira,Anderson; Pereira,Alexandre Leandro; Camargo,Plínio Barbosa de; Martinelli,Luiz Antonio.
Terrestrial invertebrates link terrestrial systems to aquatic ones, making vegetal material produced in the watershed available to aquatic food webs. In this study, using carbon and nitrogen stable isotopes, we evaluated the importance of introduced C4 grasses as a source of carbon in aquatic food webs of headwater streams of the coastal Atlantic Forest located on the north coast of the State of São Paulo, in the southeastern region of Brazil. Terrestrial invertebrates were collected in two streams: one where the main land cover was pristine montane Atlantic Forest (forest stream) and another where the main land cover was introduced C4 forage grasses for livestock (pasture stream). The average δ13C of terrestrial invertebrates collected in the forest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Land use; Streams; Stable isotopes; Terrestrial invertebrate.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200104

Seletividade de agrotóxicos utilizados na cultura do arroz irrigado ao fungo Metarhizium anisopliae, agente de controle microbiano de Tibraca limbativentris
Provedor de dados: 65
Autores: Rampelotti-Ferreira,Fátima Teresinha; Ferreira,Anderson; Prando,Honório Francisco; Tcacenco,Fernando Adami; Grützmacher,Anderson Dionei; Martins,José Francisco da Silva.
Para subsidiar a utilização de táticas de manejo integrado para o inseto-praga Tibraca limbativentris, avaliou-se a compatibilidade in vitro entre o isolado CG 891 de Metarhizium anisopliae e os agrotóxicos utilizados na cultura do arroz irrigado. Os parâmetros avaliados foram crescimento vegetativo, esporulação e germinação em pré e pós-contato do fungo, com duas doses de fipronil, tiametoxam, fenitrotiona, carbofurano, pirazossulfurom-etílico, bentazona, clomazona, glifosato e quincloraque; e uma dose de triciclazol e azoxistrobina. Reduções significativas no crescimento vegetativo e esporulação de M. anisopliae foram observadas para fenitrotiona, carbofurano e azoxistrobina. Observou-se redução na germinação em pré-contato para o agrotóxico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arroz irrigado; Entomopatógeno; Manejo integrado de pragas; Percevejo-do-colmo; Toxicidade.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400001