Host-marking pheromone and use of previously established oviposition sites by the mediterranean fruit fly (Diptera: Tephritidae) |
| |
Authors: | Daniel R Papaj Ann L Averill Ronald J Prokopy Tim T Y Wong |
| |
Institution: | (1) Department of Ecology and Evolutionary Biology and Center for Insect Science, University of Arizona, 85721 Tucson, Arizona;(2) Department of Entomology, University of Massachusetts, 01003 Amherst, Massachusetts;(3) Tropical Fruit and Vegetable Research Laboratory, Agricultural Research Service, USDA, 96804 Hono-lulu, Hawaii |
| |
Abstract: | Under controlled conditions, the Mediterranean fruit fly, Ceratitis capitata(Wiedemann) preferred to initiate oviposition into preexisting, naturally formed oviposition punctures in a host fruit, kumquat (Fortunella japonica),over establishing new sites on the fruit. This preference was expressed despite the presence of naturally deposited host-marking pheromone (HMP)shown previously to deter oviposition. An almost-identical preference for existing punctures was expressed when females were presented with fruit bearing artificially made punctures on which HMP had been naturally deposited. Using artificial punctures and HMP extracts, the occurrence of punctures was manipulated independently of the presence of HMP.Under field-cage conditions, we found that (1) punctures stimulated egg-laying on kumquats, regardless of HMP treatment; (2) HMP extract inhibited egg-laying, regardless of the occurrence of punctures; and (3) the extent to which HMP inhibited egg-laying was greater on fruit free of punctures than on fruit bearing them. The physiological, evolutionary, and pest management implications of these results are discussed. |
| |
Keywords: | Ceratitis capitata medfly parasite oviposition marking pheromone stimulant deterrent superparasitism |
本文献已被 SpringerLink 等数据库收录! |
|