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- Title
Patterns of gall infestation in Heteropterys byrsonimifolia A. Juss. in a forest-savannah ecotone.
- Authors
de Castro Nunes Santos Terra, Marcela; dos Santos, Rubens Manoel; Carvalho, Warley Augusto Caldas; Coelho, Polyanne Aparecida; Reis, Geovany Heitor; Moreira, Aline Martins
- Abstract
Galls are the result of a specific interaction between an inducer and a host plant. The species Heteropterys byrsonimifolia A. Juss. occurs in abundance in semideciduous seasonal forest ecotones and adjacent open formations. In the ecological reserve Quedas do Rio Bonito, located in the state of Minas Gerais, Brazil, this species is affected by a single gall morphotype. The present study aimed to evaluate whether the structural complexity of the host (test of the structural complexity hypothesis) and the distance between hosts (test of the resource concentration hypothesis) affect gall density in H. byrsonimifolia and to characterize the spatial distribution of the infestation. The results corroborate the two hypotheses tested, suggesting a metapopulation pattern of gall infestation in H. byrsonimifolia. Gallers were more successful in abrupt forest-savannah transition environments, which may be associated with greater stress-induced host vulnerability that plants usually experience in ecotones.
- Subjects
BRAZIL; MALPIGHIACEAE; GALLS (Botany); PLANT diseases; ECOTONES; FORESTS &; forestry
- Publication
Revista Ceres, 2017, Vol 64, Issue 2, p143
- ISSN
0034-737X
- Publication type
Article
- DOI
10.1590/0034-737X201764020006