Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae)
Autor(a) principal: | |
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Data de Publicação: | 1996 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zoologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200009 |
Resumo: | A different approach was used for the key-factor method in a population study of the tropical butterfly Fountainea ryphea (Cramer, [1776]) (Lepidoptera, Nymphalidae), marking 20 artificial cohorts to identify the mortality levels and associated instars responsible for the variation in numbers within the season of occurrence, when generations overlap broadly. Highest mortality was detected during first instar in 13 cohorts; during second instar in three cohorts; third and fourth instars suffered highest mortality twice. Results showed that first instar mortality due to rainfall and predation, and parasitism on fourth instar could be the main factors promoting differences in number between cohorts throughout the season, although no density-dependent processes could be identified. |
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Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae)Braconk-factorparasitismpredationA different approach was used for the key-factor method in a population study of the tropical butterfly Fountainea ryphea (Cramer, [1776]) (Lepidoptera, Nymphalidae), marking 20 artificial cohorts to identify the mortality levels and associated instars responsible for the variation in numbers within the season of occurrence, when generations overlap broadly. Highest mortality was detected during first instar in 13 cohorts; during second instar in three cohorts; third and fourth instars suffered highest mortality twice. Results showed that first instar mortality due to rainfall and predation, and parasitism on fourth instar could be the main factors promoting differences in number between cohorts throughout the season, although no density-dependent processes could be identified.Sociedade Brasileira de Zoologia1996-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200009Revista Brasileira de Zoologia v.13 n.2 1996reponame:Revista Brasileira de Zoologia (Online)instname:Sociedade Brasileira de Zoologia (SBZ)instacron:SBZ10.1590/S0101-81751996000200009info:eu-repo/semantics/openAccessCaldas,Astrideng2009-07-14T00:00:00Zoai:scielo:S0101-81751996000200009Revistahttp://calvados.c3sl.ufpr.br/ojs2/index.php/zooONGhttps://old.scielo.br/oai/scielo-oai.php||sbz@bio.ufpr.br1806-969X0101-8175opendoar:2009-07-14T00:00Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)false |
dc.title.none.fl_str_mv |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
title |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
spellingShingle |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) Caldas,Astrid Bracon k-factor parasitism predation |
title_short |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
title_full |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
title_fullStr |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
title_full_unstemmed |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
title_sort |
Intraseasonal variation in a population of Fountainea ryphea (Cramer) (Lepidoptera, Nymphalidae) |
author |
Caldas,Astrid |
author_facet |
Caldas,Astrid |
author_role |
author |
dc.contributor.author.fl_str_mv |
Caldas,Astrid |
dc.subject.por.fl_str_mv |
Bracon k-factor parasitism predation |
topic |
Bracon k-factor parasitism predation |
description |
A different approach was used for the key-factor method in a population study of the tropical butterfly Fountainea ryphea (Cramer, [1776]) (Lepidoptera, Nymphalidae), marking 20 artificial cohorts to identify the mortality levels and associated instars responsible for the variation in numbers within the season of occurrence, when generations overlap broadly. Highest mortality was detected during first instar in 13 cohorts; during second instar in three cohorts; third and fourth instars suffered highest mortality twice. Results showed that first instar mortality due to rainfall and predation, and parasitism on fourth instar could be the main factors promoting differences in number between cohorts throughout the season, although no density-dependent processes could be identified. |
publishDate |
1996 |
dc.date.none.fl_str_mv |
1996-01-01 |
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=S0101-81751996000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0101-81751996000200009 |
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 |
Sociedade Brasileira de Zoologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zoologia v.13 n.2 1996 reponame:Revista Brasileira de Zoologia (Online) instname:Sociedade Brasileira de Zoologia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zoologia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zoologia (Online) |
collection |
Revista Brasileira de Zoologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ) |
repository.mail.fl_str_mv |
||sbz@bio.ufpr.br |
_version_ |
1754820980178419712 |