Evidence for a stress hypothesis: hemiparasitism effect on the colonization of Alchornea castaneaefolia A. Juss.uphorbiaceae) by Galling Insects

Acta Amazonica

Gustavo Schwartz¹  Natalia Hanazaki¹  Marivana B. Silva¹  Thiago J. Izzo¹  María E. P. Bejar¹  Mariana R. Mesquita¹  G. Wilson Fernandes¹ 

关键词: Galling insects;    Galls;    Amazonian Rainforest;    Stress;    Host-plant Stress;    Insetos galhadores;    Galhas;    Floresta Amazônica;    Estresse;    Estresse da planta hospedeira;   

DOI  :  10.1590/1809-4392200332280

来源: SciELO

【 摘 要 】

Stressed plants are generally more attacked by galling insects. In this study we investigated the relationship between population abundance and species richness of galling insects on the tree Alchornea castaneaefolia A. JUSS. (Euphorbiaceae), submited to stress induced by the hemiparasite Psittacanthus sp. (Loranthaceae) in the Amazon, Brazil. Branches of A. castaneaefolia attacked by the hemiparasite were more heavily infested by galling insects than non-attacked branches. The field observations partially corroborate the hypothesis that there would be an optimal level of host-plant stress for galling insect establishment.

【 授权许可】

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