Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil
The richness and abundance of free-feeding insect herbivores may vary according to leaf sclerophylly, tannin concentration, and habitat conditions. We sampled 12 individuals of Copaifera langsdorffii in three different habitat physiognomies found in a cerrado-caatinga transition area in northern Minas Gerais, Brazil: 1) Cerrado (“sensu stricto”), 2) Riparian Forest, and 3) Seasonally Dry Forest (n=36 individuals). Higher richness and abundance of chewing herbivores were observed on C. langsdorffii in the Riparian Forest and Cerrado compared to Seasonally Dry Forest. On the other hand, the richness and abundance of sap-sucking herbivores did not differ among the habitats. No statistically significant differences were observed in leaf sclerophylly and tannin concentration among physiognomies, as well as no relationship was found among tannin concentration, leaf sclerophylly and richness and abundance of any of the insect guilds studied. The flushing of leaves by C. langsdorffi at the end of the dry season in the deciduous forest may be a mechanism to escape herbivores. Otherwise, for a detailed analysis long term studies at the vegetation formation where the host plant species is distributed and the selective pressures exerted by its herbivores are called for.
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Asociación Argentina de Ecología
2009
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rev-ecoaus-article-13322023-11-03T02:36:04Z Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil Esclerofilia, taninos e insetos herbívoros associados a Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) em área de transição Cerrado-Caatinga no Brasil O Silva, Jhonathan Jesus, Fabiene M. Fagundes, Marcílio Fernandes, G. Wilson chemical defenses hygrothermal stress specific leaf mass defesa química estresse higrotérmico massa foliar especifica The richness and abundance of free-feeding insect herbivores may vary according to leaf sclerophylly, tannin concentration, and habitat conditions. We sampled 12 individuals of Copaifera langsdorffii in three different habitat physiognomies found in a cerrado-caatinga transition area in northern Minas Gerais, Brazil: 1) Cerrado (“sensu stricto”), 2) Riparian Forest, and 3) Seasonally Dry Forest (n=36 individuals). Higher richness and abundance of chewing herbivores were observed on C. langsdorffii in the Riparian Forest and Cerrado compared to Seasonally Dry Forest. On the other hand, the richness and abundance of sap-sucking herbivores did not differ among the habitats. No statistically significant differences were observed in leaf sclerophylly and tannin concentration among physiognomies, as well as no relationship was found among tannin concentration, leaf sclerophylly and richness and abundance of any of the insect guilds studied. The flushing of leaves by C. langsdorffi at the end of the dry season in the deciduous forest may be a mechanism to escape herbivores. Otherwise, for a detailed analysis long term studies at the vegetation formation where the host plant species is distributed and the selective pressures exerted by its herbivores are called for. A riqueza e abundância de herbívoros associados a uma planta hospedeira são influenciadas por variações nas defesas físicas e químicas da planta as quais são mediadas pela qualidade do habitat. Neste estudo, 36 indivíduos de Copaifera langsdorffii distribuídos equitativamente entre habitats de Cerrado “sensu stricto”, Matas Ciliares e Floresta Estacional Decidual foram usadas para avaliar os efeitos do habitat na esclerofilia foliar, produção de taninos e na fauna de insetos herbívoros associados. Observou-se maior riqueza e abundância de herbívoros mastigadores em plantas dos habitats de Mata Ciliar e Cerrado comparativamente à Floresta Estacional Decidual. Porém, a riqueza e abundância de insetos herbívoros sugadores não diferiu entre os habitats. Não foi encontrada relação entre a riqueza ou abundância de herbívoros com a concentração de taninos e a esclerofilia foliar de C. langsdorffii. Estas variáveis também não variaram entre os habitats. É provável que nesses ambientes a esclerofilia não esteja relacionada apenas com a herbivoria, e que alguns herbívoros podem não ser afetados negativamente ou beneficiados pela concentração de taninos encontrada. O lançamento de folhas por C. langsdorffi apenas no fim da estação seca na Floresta Decidual pode constituir um mecanismo de escape de herbivoria. Porém, para uma análise mais detalhada há necessidade de estudos a longo prazo sobre nos diversos tipos de ambientes nos quais esta espécies esta distribuída bem como da pressão exercida pelos seus herbívoros. Asociación Argentina de Ecología 2009-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articles Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1332 Ecología Austral; Vol. 19 No. 3 (2009): December 2009, Pages 175-258; 197-206 Ecología Austral; Vol. 19 Núm. 3 (2009): December 2009, Pages 175-258; 197-206 1667-782X 0327-5477 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1332/702 Derechos de autor 2009 Jhonathan O Silva, Fabiene M. Jesus, Marcílio Fagundes, G. Wilson Fernandes https://creativecommons.org/licenses/by/3.0/ |
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O Silva, Jhonathan Jesus, Fabiene M. Fagundes, Marcílio Fernandes, G. Wilson |
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O Silva, Jhonathan Jesus, Fabiene M. Fagundes, Marcílio Fernandes, G. Wilson Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| author_facet |
O Silva, Jhonathan Jesus, Fabiene M. Fagundes, Marcílio Fernandes, G. Wilson |
| author_sort |
O Silva, Jhonathan |
| title |
Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| title_short |
Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| title_full |
Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| title_fullStr |
Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| title_full_unstemmed |
Sclerophylly, tannins and herbivorous insects associated with Copaifera lagsdorffii Desf. (Fabaceae: Caesalpinioideae) in a Cerrado-Caatinga transition, Brazil |
| title_sort |
sclerophylly, tannins and herbivorous insects associated with copaifera lagsdorffii desf. (fabaceae: caesalpinioideae) in a cerrado-caatinga transition, brazil |
| description |
The richness and abundance of free-feeding insect herbivores may vary according to leaf sclerophylly, tannin concentration, and habitat conditions. We sampled 12 individuals of Copaifera langsdorffii in three different habitat physiognomies found in a cerrado-caatinga transition area in northern Minas Gerais, Brazil: 1) Cerrado (“sensu stricto”), 2) Riparian Forest, and 3) Seasonally Dry Forest (n=36 individuals). Higher richness and abundance of chewing herbivores were observed on C. langsdorffii in the Riparian Forest and Cerrado compared to Seasonally Dry Forest. On the other hand, the richness and abundance of sap-sucking herbivores did not differ among the habitats. No statistically significant differences were observed in leaf sclerophylly and tannin concentration among physiognomies, as well as no relationship was found among tannin concentration, leaf sclerophylly and richness and abundance of any of the insect guilds studied. The flushing of leaves by C. langsdorffi at the end of the dry season in the deciduous forest may be a mechanism to escape herbivores. Otherwise, for a detailed analysis long term studies at the vegetation formation where the host plant species is distributed and the selective pressures exerted by its herbivores are called for. |
| publisher |
Asociación Argentina de Ecología |
| publishDate |
2009 |
| url |
https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1332 |
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