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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
21/06/2002 |
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Data da última atualização: |
30/03/2017 |
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Autoria: |
CANTRELL, R. S.; COSNER, C.; FAGAN, W. F. |
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Título: |
Brucellosis, botflies, and brainworms: the impact of edge habitats on pathogen transmission and species extinction. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Journal of Mathematical Biology, v.42, n.2, p.95-119, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
Ecological interactions between species that prefer different habitat types but come into contact in edge regions at the interfaces between habitat types are modeled via reaction-
diffusion systems. The primary sort of interactions described by the models is competition mediated by pathogen transmission. The models arre somewhat novel because the spatial domains for the variables describong the population densities of the interacting species overlap but do not coincide. Conditions implying coexistence of the two species or the
extinction of one species are derived. The conditions involve the principal eigenvalues of elliptic operators arising from linearizations of the model system around equilibria with only one species present. The conditions for persistence or extinction are made explicit in terms of the parameters of the system and the geometry of the underlying spatial domains via estimates of the principal eigenvalues. The implications of the models with respect to conservation and refuge design are discussed. |
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Palavras-Chave: |
Botflies; Brainworms; Extincao das especies; Gastrofilo; Insect; Lombriga de cerebro; Species extinction. |
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Thesagro: |
Brucelose; Habitat; Inseto; Mosca. |
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Thesaurus Nal: |
brucellosis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01822naa a2200289 a 4500
001 1810130
005 2017-03-30
008 2001 bl --- 0-- u #d
100 1 $aCANTRELL, R. S.
245 $aBrucellosis, botflies, and brainworms$bthe impact of edge habitats on pathogen transmission and species extinction.
260 $c2001
520 $aEcological interactions between species that prefer different habitat types but come into contact in edge regions at the interfaces between habitat types are modeled via reaction- diffusion systems. The primary sort of interactions described by the models is competition mediated by pathogen transmission. The models arre somewhat novel because the spatial domains for the variables describong the population densities of the interacting species overlap but do not coincide. Conditions implying coexistence of the two species or the extinction of one species are derived. The conditions involve the principal eigenvalues of elliptic operators arising from linearizations of the model system around equilibria with only one species present. The conditions for persistence or extinction are made explicit in terms of the parameters of the system and the geometry of the underlying spatial domains via estimates of the principal eigenvalues. The implications of the models with respect to conservation and refuge design are discussed.
650 $abrucellosis
650 $aBrucelose
650 $aHabitat
650 $aInseto
650 $aMosca
653 $aBotflies
653 $aBrainworms
653 $aExtincao das especies
653 $aGastrofilo
653 $aInsect
653 $aLombriga de cerebro
653 $aSpecies extinction
700 1 $aCOSNER, C.
700 1 $aFAGAN, W. F.
773 $tJournal of Mathematical Biology$gv.42, n.2, p.95-119, 2001.
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