| detecting cacopsylla pyricola (hemiptera: psyllidae) in predator guts using coi mitochondrial markers. | cacopsylla pyricola (förster) is one of the most important pests of pear in north america, where several native predators have been considered for integrated pest management (ipm) programmes. two molecular markers of 271 and 188 bp were developed from c. pyricola cytochrome oxidase i (coi) fragments, in order to study the detection of this species in the gut of arthropod predators. primer sensitivity and the detection period for pear psylla remains in the guts of anthocoris tomentosus pericart w ... | 2003 | 12762859 |