Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment

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Seed predator insects are generally highly specialized herbivores that can be affected by several plant characteristics. In this study, the resource concentration hypothesis and the plant architecture hypothesis were tested by evaluating the attack of Rhynochenus brevicollis on Copaifera langsdorffi...

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Autores principales: Fagundes, Marcílio, Maia, Maria L. B., Queiroz, Antônio C. M., Fernandes, G. W., Costa, Fernanda V.
Lenguaje:Inglés
Publicado: 2013
Materias:
PLANT ARCHITECTURE
PLANT PHENOLOGY
PREDATOR SATIATION
RESOURCE CONCENTRATION
SUPRA-ANNUAL FRUITING
ARQUITETURA DA PLANTA
CONCENTRAÇÃO DO RECURSO
FENOLOGIA
FRUTIFICAÇÃO SUPRA ANUAL
SACIAÇÃO DE PREDADORES
Acceso en línea:https://hdl.handle.net/20.500.12110/ecologiaaustral_v023_n03_p218
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:ecologiaaustral_v023_n03_p2182023-10-03T13:35:41Z Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment Predação de Sementes de Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) por Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) em uma Área de Cerrado do Brasil Fagundes, Marcílio Maia, Maria L. B. Queiroz, Antônio C. M. Fernandes, G. W. Costa, Fernanda V. PLANT ARCHITECTURE PLANT PHENOLOGY PREDATOR SATIATION RESOURCE CONCENTRATION SUPRA-ANNUAL FRUITING ARQUITETURA DA PLANTA CONCENTRAÇÃO DO RECURSO FENOLOGIA FRUTIFICAÇÃO SUPRA ANUAL SACIAÇÃO DE PREDADORES Seed predator insects are generally highly specialized herbivores that can be affected by several plant characteristics. In this study, the resource concentration hypothesis and the plant architecture hypothesis were tested by evaluating the attack of Rhynochenus brevicollis on Copaifera langsdorffii seeds. The study was conducted in a cerrado fragment situated in southeastern Brazil. The percentage of C. langsdorffii seed predation by R. brevicollis ranged from 1 to 30% (mean±SD, 9.31±6.41). The percentage of seed predation was negatively related to the number of fruits per branch. The predation of seeds by the beetle was positively affected by plant crown circumference, while plant height did not show any relationship with seed predation. Thus, our results did not support any of the two hypotheses evaluated. Finally, the study discusses the role of plant phenology (masting) in regulating the seed predator’s population in cerrado vegetation. Insetos predadores de sementes geralmente são herbívoros especializados que podem ser afetados por características da planta hospedeira. Neste estudo, a predação das sementes de Copaifera langsdorffii por Rhynochenus brevicollis foi caracterizada testando-se as hipóteses da concentração do recurso e da arquitetura da planta. O estudo foi realizado em um fragmento de cerrado localizado no norte do estado de Minas Gerais, Brasil. A percentagem de sementes de C. langsdorffii predadas por R. brevicollis variou de 1 to 30% (média±DP, 9.31±6.41). O número de frutos por ramos afetou negativamente a percentagem de predação das sementes por R. brevicollis. A predação de sementes pelo besouro mostrou relação positiva com a circunferência do tronco das árvores, mas a altura das árvores não afetou o ataque do predador. Assim, nossos dados não apresentaram suporte real para as duas hipóteses testadas. Finalmente, o estudo discute o papel da frutificação supra-anual na regulação da população de R. brevicollis. 2013-12 PDF Inglés info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar https://hdl.handle.net/20.500.12110/ecologiaaustral_v023_n03_p218
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv Inglés
topic PLANT ARCHITECTURE
PLANT PHENOLOGY
PREDATOR SATIATION
RESOURCE CONCENTRATION
SUPRA-ANNUAL FRUITING
ARQUITETURA DA PLANTA
CONCENTRAÇÃO DO RECURSO
FENOLOGIA
FRUTIFICAÇÃO SUPRA ANUAL
SACIAÇÃO DE PREDADORES
spellingShingle PLANT ARCHITECTURE
PLANT PHENOLOGY
PREDATOR SATIATION
RESOURCE CONCENTRATION
SUPRA-ANNUAL FRUITING
ARQUITETURA DA PLANTA
CONCENTRAÇÃO DO RECURSO
FENOLOGIA
FRUTIFICAÇÃO SUPRA ANUAL
SACIAÇÃO DE PREDADORES
Fagundes, Marcílio
Maia, Maria L. B.
Queiroz, Antônio C. M.
Fernandes, G. W.
Costa, Fernanda V.
Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
topic_facet PLANT ARCHITECTURE
PLANT PHENOLOGY
PREDATOR SATIATION
RESOURCE CONCENTRATION
SUPRA-ANNUAL FRUITING
ARQUITETURA DA PLANTA
CONCENTRAÇÃO DO RECURSO
FENOLOGIA
FRUTIFICAÇÃO SUPRA ANUAL
SACIAÇÃO DE PREDADORES
description Seed predator insects are generally highly specialized herbivores that can be affected by several plant characteristics. In this study, the resource concentration hypothesis and the plant architecture hypothesis were tested by evaluating the attack of Rhynochenus brevicollis on Copaifera langsdorffii seeds. The study was conducted in a cerrado fragment situated in southeastern Brazil. The percentage of C. langsdorffii seed predation by R. brevicollis ranged from 1 to 30% (mean±SD, 9.31±6.41). The percentage of seed predation was negatively related to the number of fruits per branch. The predation of seeds by the beetle was positively affected by plant crown circumference, while plant height did not show any relationship with seed predation. Thus, our results did not support any of the two hypotheses evaluated. Finally, the study discusses the role of plant phenology (masting) in regulating the seed predator’s population in cerrado vegetation.
author Fagundes, Marcílio
Maia, Maria L. B.
Queiroz, Antônio C. M.
Fernandes, G. W.
Costa, Fernanda V.
author_facet Fagundes, Marcílio
Maia, Maria L. B.
Queiroz, Antônio C. M.
Fernandes, G. W.
Costa, Fernanda V.
author_sort Fagundes, Marcílio
title Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
title_short Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
title_full Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
title_fullStr Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
title_full_unstemmed Seed Predation of Copaifera langsdorffii Desf. (Fabaceae: Caesalpinioideae) by Rhinochenus brevicollis Chevrolat (Coleoptera: Curculionidae) in a Brazilian Cerrado Fragment
title_sort seed predation of copaifera langsdorffii desf. (fabaceae: caesalpinioideae) by rhinochenus brevicollis chevrolat (coleoptera: curculionidae) in a brazilian cerrado fragment
publishDate 2013
url https://hdl.handle.net/20.500.12110/ecologiaaustral_v023_n03_p218
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