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4. PPEC - Artigos de periódicos

Tipo de Documento:	Artigo
Título :	Fluctuating asymmetry of and herbivory on Poincianella pyramidalis (Tul.) L. P. Queiroz (Fabaceae) in pasture and secondary tropical dry forest
Autor :	Ribeiro, Viviane Andrade Silva, Rosineide Nascimento da Sousa-Souto, Leandro Neves, Frederico de Siqueira
Fecha de publicación :	2013
Resumen:	Plants subjected to stressful environments tend to be more asymmetric with reduced defenses and are therefore more vulnerable to herbivory. Th is study investigates the relationship between herbivory and fl uctuating asymmetry (FA) in Poincianella pyramidalis in two contrasting habitat types in the Brazilian caatinga (shrublands). We testedthe following hypotheses: that FA occurs in P. pyramidalis; that FA of P. pyramidalis leaves is greater in individuals located in pasture than in those located in secondary tropical dry forest; that herbivory by insects (leaf chewers and leaf miners) increases in parallel with increases in the level of FA; and that herbivory is more common in pasture than in secondary tropical dry forest. In each of the two environments, we sampled 20 plants and evaluated 400 leafl ets. We submitted FA data to the Shapiro-Wilk test of normality, and we investigated the other variables using generalized linear models. We found that FA was present in all P. pyramidalis individuals evaluated but was greater in those located in the more degraded habitat (pasture). In addition, although herbivory was similar between the two habitats, there was positive relationship between FA and herbivory. Th is indicates that herbivores select plants that are more asymmetric, regardless of the type of habitat involved, which might be attributable to the mechanisms posited in the plant stress hypothesis.
Palabras clave :	Caatinga Forest regeneration Leaf miners Plant-insect interactions Tropical dry forests
ISSN :	1677-941X
Es parte de:	Acta Botanica Brasilica
Idioma :	eng
Institución / Editorial :	Sociedade Botânica do Brasil
Citación :	RIBEIRO, V. A. et al. Fluctuating asymmetry of and herbivory on Poincianella pyramidalis (Tul.) L. P. Queiroz (Fabaceae) in pasture and secondary tropical dry forest. Acta Botanica Brasilica, Brasília, v. 27, n. 1, p. 21-25, 2013. Disponível em: https://www.scielo.br/j/abb/a/75dy3t8xNTLNnTkRyDX8RZp/?lang=en. Acesso em: 15 dez. 2025.
License:	Creative Commons Atribuição-NãoComercial 4.0 Internacional (CC BY-NC 4.0)
URI :	https://ri.ufs.br/jspui/handle/riufs/24078
Aparece en las colecciones:	PPEC - Artigos de periódicos

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