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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
24/03/1999 |
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Data da última atualização: |
24/03/1999 |
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Autoria: |
ZARET, T. M.; RAND, A. S. |
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Afiliação: |
Biology Department, Yale University, New Haven, Connecticut. Smithsonian Tropical Research Institute, Balboa, canal Zone. |
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Título: |
Competition in tropical stream fishes: support for the competitive exclusion principle. |
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Ano de publicação: |
1971 |
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Fonte/Imprenta: |
Ecology, v.52, n.2, p.336-342, 1971. |
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Idioma: |
Inglês |
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Conteúdo: |
Two collection of fish were made from the same Panama lowland stream, one during the dry season, and a second during the wet season. Food overlaps among nine sympatric fish species were calculated for each collection by examin ing fish stomach contents. Species habitats and feeding methods were determined from field and laboratory observations. Estimates of food abundance, measured independently from food overlap, were made by direct and indirect methods, and were used to determine relative levels of competition. The results show that food overlaps among the fishes are at a minimum during the dry season. Food abundance is also lowest during the dry season, which suggests increased competition for food at this time. This seasonal coincidence of the most distinct species separations with the time of increased competition are extractly those consequences predicted by the principle of competitive exclusion. It is concluded that this study provides strong support for the validity of this principle. |
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Palavras-Chave: |
Competicao; Competition; Fluxo tropical; Tropical stream. |
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Thesagro: |
Peixe. |
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Thesaurus Nal: |
fish. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01543naa a2200205 a 4500
001 1794672
005 1999-03-24
008 1971 bl --- 0-- u #d
100 1 $aZARET, T. M.
245 $aCompetition in tropical stream fishes$bsupport for the competitive exclusion principle.
260 $c1971
520 $aTwo collection of fish were made from the same Panama lowland stream, one during the dry season, and a second during the wet season. Food overlaps among nine sympatric fish species were calculated for each collection by examin ing fish stomach contents. Species habitats and feeding methods were determined from field and laboratory observations. Estimates of food abundance, measured independently from food overlap, were made by direct and indirect methods, and were used to determine relative levels of competition. The results show that food overlaps among the fishes are at a minimum during the dry season. Food abundance is also lowest during the dry season, which suggests increased competition for food at this time. This seasonal coincidence of the most distinct species separations with the time of increased competition are extractly those consequences predicted by the principle of competitive exclusion. It is concluded that this study provides strong support for the validity of this principle.
650 $afish
650 $aPeixe
653 $aCompeticao
653 $aCompetition
653 $aFluxo tropical
653 $aTropical stream
700 1 $aRAND, A. S.
773 $tEcology$gv.52, n.2, p.336-342, 1971.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
17/02/2011 |
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Data da última atualização: |
25/05/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BORGES, M. de F.; PORTO, B. C.; MACHADO, T. F.; SILVEIRA, D. B.; CARVALHO, J. D. G. |
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Afiliação: |
MARIA DE FATIMA BORGES, CNPAT; Bruna Castro Porto, UFC; TEREZINHA FEITOSA MACHADO, CNPAT; Danielly Bandeira Silveira, UFC; Juliana Döering Gasparin Carvalho, UFC. |
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Título: |
Pesquisa de fatores de virulência em Enterococcus sp. isolados de alimentos. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Resumos... Salvador: Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2010. |
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Páginas: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Bactéria lática; Patógeno emergente; Queijo de coalho. |
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Thesagro: |
Patogenicidade. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/34330/1/RE10053.pdf
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Marc: |
LEADER 00723nam a2200205 a 4500
001 1877725
005 2017-05-25
008 2010 bl uuuu u00u1 u #d
100 1 $aBORGES, M. de F.
245 $aPesquisa de fatores de virulência em Enterococcus sp. isolados de alimentos.
260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Resumos... Salvador: Sociedade Brasileira de Ciência e Tecnologia de Alimentos$c2010
300 $a1 CD-ROM.
650 $aPatogenicidade
653 $aBactéria lática
653 $aPatógeno emergente
653 $aQueijo de coalho
700 1 $aPORTO, B. C.
700 1 $aMACHADO, T. F.
700 1 $aSILVEIRA, D. B.
700 1 $aCARVALHO, J. D. G.
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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