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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
20/01/2012 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FERREIRA, A.; PAULA, F. R. de; FERRAZ, S. F. de B.; GERHARD, P.; KASHIWAQUI, E. A. L.; CYRINO, J. E. P.; MARTINELLI, L. A. |
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Afiliação: |
ANDERSON FERREIRA, CENA; FELIPE R. DE PAULA, USP/ESALQ; SILVIO F. DE BARROZ FERRAZ, USP/ESALQ; PEDRO GERHARD, CPATU; ELAINE A. L. KASHIWAQUI, UNIOESTE; JOSÉ E. P. CYRINO, USP/ESALQ; LUIZ A. MARTINELLI, CENA. |
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Título: |
Riparian coverage affects diets of characids in neotropical streams. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Ecology of Freshwater Fish, v. 21, n. 1, p. 12-22, Jan. 2012. |
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DOI: |
10.1111/j.1600-0633.2011.00518.x |
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Idioma: |
Inglês |
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Conteúdo: |
Aquatic ecosystems are influenced by the surrounding terrestrial environment. This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30?60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin. |
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Palavras-Chave: |
Agroecossistema. |
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Thesagro: |
Peixe; Uso da Terra. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01898naa a2200241 a 4500
001 1913125
005 2022-11-11
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1600-0633.2011.00518.x$2DOI
100 1 $aFERREIRA, A.
245 $aRiparian coverage affects diets of characids in neotropical streams.$h[electronic resource]
260 $c2012
520 $aAquatic ecosystems are influenced by the surrounding terrestrial environment. This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30?60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin.
650 $aPeixe
650 $aUso da Terra
653 $aAgroecossistema
700 1 $aPAULA, F. R. de
700 1 $aFERRAZ, S. F. de B.
700 1 $aGERHARD, P.
700 1 $aKASHIWAQUI, E. A. L.
700 1 $aCYRINO, J. E. P.
700 1 $aMARTINELLI, L. A.
773 $tEcology of Freshwater Fish$gv. 21, n. 1, p. 12-22, Jan. 2012.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Cocais. |
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Data corrente: |
15/08/2017 |
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Data da última atualização: |
26/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUSA, S. B.; SILVA, G. F. da; DIAS, M. C.; CLEMENT, C. R.; SOUSA, N. R. |
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Afiliação: |
INPA; GILVAN FERREIRA DA SILVA, CPAA; MIGUEL COSTA DIAS, CPAA; INPA; NELCIMAR REIS SOUSA, CPACP. |
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Título: |
Farmer variety exchange along Amazonian rivers influences the genetic structure of manioc maintained in a regional Brazilian GeneBank. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 16, n. 3, July 2017. |
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DOI: |
http://dx.doi.org/10.4238/gmr16039690 |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge of agro-morphological and genetic variability of germplasm diversity is a prerequisite for its use in breeding. The aim of this study was to characterize the genetic diversity of the manioc (Manihot esculenta) Active Germplasm Bank (AGB) at Embrapa Amazônia Ocidental using microsatellite markers. We evaluated 470 accessions collected along five of the main rivers of the Amazon basin: Solimões, Purus, Madeira, Negro, and Amazon. The ten SSR loci used showed high levels of genetic diversity, the polymorphism information content ranged from 0.35 to 0.84, and the mean number of alleles per locus was 11.3. Accessions from the Madeira River had a higher Shannon index (1.52), as well as the largest number of private alleles (19). Bayesian inference of genetic structure implemented in the Structure software suggested the existence of two groups of accessions without clear association with river basins. The accumulated variation in the first two axes of the principal coordinate analysis revealed low genetic divergence between these groups, while AMOVA identified most of the molecular variance within the groups. Farmer exchange of varieties along and among rivers probably explains the lack of structure. Although the manioc AGB of Embrapa Amazônia Ocidental contains abundant genetic diversity, no differentiation was found between the groups studied. |
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Palavras-Chave: |
Diversidade genética; Manioc. |
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Thesagro: |
Germoplasma; Mandioca; Manihot Esculenta. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162829/1/gmr-16-03-gmr.16039690.pdf
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Marc: |
LEADER 02136naa a2200241 a 4500
001 2074207
005 2018-01-26
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4238/gmr16039690$2DOI
100 1 $aSOUSA, S. B.
245 $aFarmer variety exchange along Amazonian rivers influences the genetic structure of manioc maintained in a regional Brazilian GeneBank.$h[electronic resource]
260 $c2017
520 $aKnowledge of agro-morphological and genetic variability of germplasm diversity is a prerequisite for its use in breeding. The aim of this study was to characterize the genetic diversity of the manioc (Manihot esculenta) Active Germplasm Bank (AGB) at Embrapa Amazônia Ocidental using microsatellite markers. We evaluated 470 accessions collected along five of the main rivers of the Amazon basin: Solimões, Purus, Madeira, Negro, and Amazon. The ten SSR loci used showed high levels of genetic diversity, the polymorphism information content ranged from 0.35 to 0.84, and the mean number of alleles per locus was 11.3. Accessions from the Madeira River had a higher Shannon index (1.52), as well as the largest number of private alleles (19). Bayesian inference of genetic structure implemented in the Structure software suggested the existence of two groups of accessions without clear association with river basins. The accumulated variation in the first two axes of the principal coordinate analysis revealed low genetic divergence between these groups, while AMOVA identified most of the molecular variance within the groups. Farmer exchange of varieties along and among rivers probably explains the lack of structure. Although the manioc AGB of Embrapa Amazônia Ocidental contains abundant genetic diversity, no differentiation was found between the groups studied.
650 $aGermoplasma
650 $aMandioca
650 $aManihot Esculenta
653 $aDiversidade genética
653 $aManioc
700 1 $aSILVA, G. F. da
700 1 $aDIAS, M. C.
700 1 $aCLEMENT, C. R.
700 1 $aSOUSA, N. R.
773 $tGenetics and Molecular Research$gv. 16, n. 3, July 2017.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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