The effect of host plant intraspecific genetic variation on the fitness of a monophagous biological control agent

摘要: Abstract Variation in insect life-history traits when developing on different host plant genotypes with known genetic relationships was tested using the monophagous biological control agent Phenrica guerini Bechyne (Chrysomelidae) and its plant, Pereskia aculeata Miller (Cactaceae). Differences fitness among were expected because of geographic isolation large distances between genotypes, P. has been associated some accessions field while others have never exposed to herbivory by insect. There little variation no differences insect's ability utilise genotypes. The results study suggest that, cases, agents collected from native genotype most closely related target weed population will not always be more effective than those distantly geno...