Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000200010 |
Resumo: | In this study we analyzed the effect of migration on the persistence time of coupled local populations of Tribolium in different environments. Four treatments were set up to compare different levels of environmental heterogeneity. We established high, low, moderate, and no heterogeneity. These levels were estimated by the different amounts of food offered to each population. To investigate how risk spreading works, a stochastic model for two subpopulations was employed. The high heterogeneity treatment resulted in the longest persistence, even though survival analysis revealed no significant difference among treatments. The magnitude of differences in growth rates among subpopulations is probably associated with persistence. |
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Brazilian Journal of Biology |
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Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneumcoupled populationsTriboliumenvironmental heterogeneitypopulation dynamicsmodelIn this study we analyzed the effect of migration on the persistence time of coupled local populations of Tribolium in different environments. Four treatments were set up to compare different levels of environmental heterogeneity. We established high, low, moderate, and no heterogeneity. These levels were estimated by the different amounts of food offered to each population. To investigate how risk spreading works, a stochastic model for two subpopulations was employed. The high heterogeneity treatment resulted in the longest persistence, even though survival analysis revealed no significant difference among treatments. The magnitude of differences in growth rates among subpopulations is probably associated with persistence.Instituto Internacional de Ecologia2005-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000200010Brazilian Journal of Biology v.65 n.2 2005reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842005000200010info:eu-repo/semantics/openAccessGodoy,W. A. C.Costa,M. I. S.eng2005-11-28T00:00:00Zoai:scielo:S1519-69842005000200010Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2005-11-28T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
title |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
spellingShingle |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum Godoy,W. A. C. coupled populations Tribolium environmental heterogeneity population dynamics model |
title_short |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
title_full |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
title_fullStr |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
title_full_unstemmed |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
title_sort |
Dynamics of extinction in coupled populations of the flour beetle Tribolium castaneum |
author |
Godoy,W. A. C. |
author_facet |
Godoy,W. A. C. Costa,M. I. S. |
author_role |
author |
author2 |
Costa,M. I. S. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Godoy,W. A. C. Costa,M. I. S. |
dc.subject.por.fl_str_mv |
coupled populations Tribolium environmental heterogeneity population dynamics model |
topic |
coupled populations Tribolium environmental heterogeneity population dynamics model |
description |
In this study we analyzed the effect of migration on the persistence time of coupled local populations of Tribolium in different environments. Four treatments were set up to compare different levels of environmental heterogeneity. We established high, low, moderate, and no heterogeneity. These levels were estimated by the different amounts of food offered to each population. To investigate how risk spreading works, a stochastic model for two subpopulations was employed. The high heterogeneity treatment resulted in the longest persistence, even though survival analysis revealed no significant difference among treatments. The magnitude of differences in growth rates among subpopulations is probably associated with persistence. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000200010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000200010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1519-69842005000200010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.65 n.2 2005 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129875544637440 |