Effect of host-plant genotypes on the performance of three candidate biological control agents of Schinus terebinthifolius in Florida.

摘要: Brazilian peppertree, Schinus terebinthifolius Raddi, native to South America, is an invasive weed in Florida, California, Texas, and Hawaii. Genetic studies have recognized two S. haplotypes (A B) extensive hybridization has occurred between these populations. Three candidate biological control agents were identified from the range (Brazil); a leaflet rolling moth Episimus utilis Zimmerman, thrips Pseudophilothrips ichini Hood Ouro Preto, unindentified thrips, referred as sp. near ichini, Curitiba, Brazil. The objective of this study was compare performance three on different genotypes found Florida Survival (54%), adult longevity (9 days), fecundity (84 eggs laid), fertility (68% hatched) E. similar all tested Florida. In contrast, species differed their ability utilize host plant. exhibited low survival (0–4%) short (<10 days) when reared genotypes, whereas higher (∼50%) (∼30 observed for P. genotypes. These findings highlight importance examining insect plant present introduced ranges selecting agents. ecological significance results discussed context possible local adaptation natural enemies.