| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amapá. |
|
Data corrente: |
01/10/2012 |
|
Data da última atualização: |
05/10/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
LACERDA, A. C. F.; TAKEMOTO, R. M.; TAVARES-DIAS, M.; POULIN, R.; PAVANELLI, G. C. |
|
Afiliação: |
A. C. F. LACERDA, UEL; R. M. TAKEMOTO, UEL; MARCOS TAVARES DIAS, CPAF-AP; R. POULIN, University of Otago; G. C. PAVANELLI, UEL. |
|
Título: |
Comparative parasitism of the fish plagioscion squamosissimus in native and invated river basins. |
|
Ano de publicação: |
2012 |
|
Fonte/Imprenta: |
The Journal of Parasitology, Lawrence, v. 98, n. 4, p. 713-717, Aug. 2012. |
|
DOI: |
10.1645/GE-2882.1 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Biological invasions are considered a major threat to biodiversity around the world, but the role of parasites in this process is still little investigated. Here, we compared parasite infections of a host species in the areas where it originated and where it was introduced, and in native and introduced species in the same environment, using the endoparasites of the fish Plagioscion squamosissimus (Sciaenidae) in 3 Brazilian basins. Samples were taken in 2 rivers where the species is native, i.e., Solimões River (SO) and Tocantins River (TO), and where the species was introduced, the upper Parana´ River (PR). In addition, abundances of diplostomids and larval nematodes were compared between P. squamosissimus and 2 native competitors in the PR, Hoplias malabaricus and Raphiodon vulpinus. In total, 13 species of endoparasites were recorded, but only Austrodiplostomum sp. and cestode cysts were present in all localities. Although infracommunity richness was similar, their species composition was slightly different among localities. General linear models using the relative condition factor of fish as response variables, and abundance of the most prevalent parasites as possible predictors showed that the condition of fish is negatively correlated with parasite abundance only in the native range (TO). Abundance of diplostomid eye flukes was higher in the PR, and in the native species H. malabaricus when compared to the invader, which might present an advantage for P. squamosissimus if they compete for prey. However, although P. squamosissimus may have lost some of its native parasites during its introduction to the PR, it is now possibly acting as a host for native generalist parasites. MenosBiological invasions are considered a major threat to biodiversity around the world, but the role of parasites in this process is still little investigated. Here, we compared parasite infections of a host species in the areas where it originated and where it was introduced, and in native and introduced species in the same environment, using the endoparasites of the fish Plagioscion squamosissimus (Sciaenidae) in 3 Brazilian basins. Samples were taken in 2 rivers where the species is native, i.e., Solimões River (SO) and Tocantins River (TO), and where the species was introduced, the upper Parana´ River (PR). In addition, abundances of diplostomids and larval nematodes were compared between P. squamosissimus and 2 native competitors in the PR, Hoplias malabaricus and Raphiodon vulpinus. In total, 13 species of endoparasites were recorded, but only Austrodiplostomum sp. and cestode cysts were present in all localities. Although infracommunity richness was similar, their species composition was slightly different among localities. General linear models using the relative condition factor of fish as response variables, and abundance of the most prevalent parasites as possible predictors showed that the condition of fish is negatively correlated with parasite abundance only in the native range (TO). Abundance of diplostomid eye flukes was higher in the PR, and in the native species H. malabaricus when compared to the invader, which might present an advantage for P. squamosissimus... Mostrar Tudo |
|
Palavras-Chave: |
Parasito animal. |
|
Thesagro: |
Competição biológica; Pescada do Piauí. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/67195/1/AP-2012-Comparative-parasitism-of-the-fish-plagioscion.pdf
|
|
Marc: |
LEADER 02402naa a2200217 a 4500
001 1935114
005 2022-10-05
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1645/GE-2882.1$2DOI
100 1 $aLACERDA, A. C. F.
245 $aComparative parasitism of the fish plagioscion squamosissimus in native and invated river basins.$h[electronic resource]
260 $c2012
520 $aBiological invasions are considered a major threat to biodiversity around the world, but the role of parasites in this process is still little investigated. Here, we compared parasite infections of a host species in the areas where it originated and where it was introduced, and in native and introduced species in the same environment, using the endoparasites of the fish Plagioscion squamosissimus (Sciaenidae) in 3 Brazilian basins. Samples were taken in 2 rivers where the species is native, i.e., Solimões River (SO) and Tocantins River (TO), and where the species was introduced, the upper Parana´ River (PR). In addition, abundances of diplostomids and larval nematodes were compared between P. squamosissimus and 2 native competitors in the PR, Hoplias malabaricus and Raphiodon vulpinus. In total, 13 species of endoparasites were recorded, but only Austrodiplostomum sp. and cestode cysts were present in all localities. Although infracommunity richness was similar, their species composition was slightly different among localities. General linear models using the relative condition factor of fish as response variables, and abundance of the most prevalent parasites as possible predictors showed that the condition of fish is negatively correlated with parasite abundance only in the native range (TO). Abundance of diplostomid eye flukes was higher in the PR, and in the native species H. malabaricus when compared to the invader, which might present an advantage for P. squamosissimus if they compete for prey. However, although P. squamosissimus may have lost some of its native parasites during its introduction to the PR, it is now possibly acting as a host for native generalist parasites.
650 $aCompetição biológica
650 $aPescada do Piauí
653 $aParasito animal
700 1 $aTAKEMOTO, R. M.
700 1 $aTAVARES-DIAS, M.
700 1 $aPOULIN, R.
700 1 $aPAVANELLI, G. C.
773 $tThe Journal of Parasitology, Lawrence$gv. 98, n. 4, p. 713-717, Aug. 2012.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amapá (CPAF-AP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Semiárido. |
|
Data corrente: |
11/10/2022 |
|
Data da última atualização: |
11/10/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
NASCIMENTO, F. A.; DUARTE, H. da S. S.; SOUZA, F. de F.; ISHIKAWA, F. H.; CAPUCHO, A. S. |
|
Afiliação: |
FRANCINETE ALVES NASCIMENTO, UNIVASF; HENRIQUE DA SILVA SILVEIRA DUARTE, UFPR; FLAVIO DE FRANCA SOUZA, CPATSA; FRANCINE HIROMI ISHIKAWA, UNIVASF; ALEXANDRE SANDRI CAPUCHO, UNIVASF. |
|
Título: |
Development and validation of a standard area diagram set to assess powdery mildew severity on watermelon leaves. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Ciência Rural, v. 50, n. 10, e20200281, 2020. |
|
DOI: |
http://doi.org/10.1590/0103-8478cr20200281 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The development and validation of a standard area diagram set (SADs) was proposed in this study to assess the severity of powdery mildew (Podosphaera xanthii) in watermelon (Citrullus lanatus) leaves. The SADs proposed has twelve levels of severity, varying from 0.07 to 100%. The SADs were validated by 16 raters who had no previous experience in evaluating plant disease severity. Initially, the estimation of severity was performed without the use of the SADs in leaves with different levels of severity. In a second moment, the same raters estimated the disease severity using the SADs proposed. By Lin?s concordance correlation analysis, there was an improvement in precision (coefficient of correlation, r = 0.878 and r = 0.959, without and with SADs, respectively) and accuracy (bias correction factor, Cb = 0.830 and 0.982, without and with SADs, respectively) using SADs when compared to the non-use of SADs. The agreement (Lin?s concordance correlation coefficient, ρc = 0.734 and 0.952 without and with SADs, espectively) also improved using SADs. Severity estimates inter-rater were more reliable when using SADs (coefficient of determination, R2 = 0.681 without and R2 = 0.864 with SADs; Intra-class correlation coefficient, ρ = 0.759 and ρ = 0.928, without and with SADs, respectively). Therefore, SADs improved precision, accuracy and reliability of powdery mildew severity on watermelon leaves. |
|
Palavras-Chave: |
Avaliação de doenças; Podosphaera xanthii. |
|
Thesagro: |
Citrullus Lanatus; Doença; Melancia; Oídio. |
|
Thesaurus NAL: |
Disease severity; Watermelons. |
|
Categoria do assunto: |
H Saúde e Patologia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147289/1/Development-and-validation-of-a-standard-area-diagram-set-to-assess-powdery-mildew-2020.pdf
|
|
Marc: |
LEADER 02273naa a2200277 a 4500
001 2147289
005 2022-10-11
008 2020 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.1590/0103-8478cr20200281$2DOI
100 1 $aNASCIMENTO, F. A.
245 $aDevelopment and validation of a standard area diagram set to assess powdery mildew severity on watermelon leaves.$h[electronic resource]
260 $c2020
520 $aThe development and validation of a standard area diagram set (SADs) was proposed in this study to assess the severity of powdery mildew (Podosphaera xanthii) in watermelon (Citrullus lanatus) leaves. The SADs proposed has twelve levels of severity, varying from 0.07 to 100%. The SADs were validated by 16 raters who had no previous experience in evaluating plant disease severity. Initially, the estimation of severity was performed without the use of the SADs in leaves with different levels of severity. In a second moment, the same raters estimated the disease severity using the SADs proposed. By Lin?s concordance correlation analysis, there was an improvement in precision (coefficient of correlation, r = 0.878 and r = 0.959, without and with SADs, respectively) and accuracy (bias correction factor, Cb = 0.830 and 0.982, without and with SADs, respectively) using SADs when compared to the non-use of SADs. The agreement (Lin?s concordance correlation coefficient, ρc = 0.734 and 0.952 without and with SADs, espectively) also improved using SADs. Severity estimates inter-rater were more reliable when using SADs (coefficient of determination, R2 = 0.681 without and R2 = 0.864 with SADs; Intra-class correlation coefficient, ρ = 0.759 and ρ = 0.928, without and with SADs, respectively). Therefore, SADs improved precision, accuracy and reliability of powdery mildew severity on watermelon leaves.
650 $aDisease severity
650 $aWatermelons
650 $aCitrullus Lanatus
650 $aDoença
650 $aMelancia
650 $aOídio
653 $aAvaliação de doenças
653 $aPodosphaera xanthii
700 1 $aDUARTE, H. da S. S.
700 1 $aSOUZA, F. de F.
700 1 $aISHIKAWA, F. H.
700 1 $aCAPUCHO, A. S.
773 $tCiência Rural$gv. 50, n. 10, e20200281, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Semiárido (CPATSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
