There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
To determine the effect of larval frass of Monochamus alternatus on oviposition preference
of the female adults, three tests were performed in the laboratory. Individual females
were provided with a frass-coated, Pinus densiflora bolt and an untreated bolt simultaneously
and were allowed to oviposit for 24 h. They deposited a significantly smaller number
of eggs on frass-coated bolts. The females supplied with frass-coated bolts deposited
no eggs on them, indicating that the larval frass deterred the females from oviposition.
When individual females were provided simultaneously with a pine bolt applied with
a methanol extract of larval frass and another bolt applied with methanol alone, they
deposited a significantly smaller number of eggs on frass extract-applied bolts for
24 h. These results suggest the presence of a putative oviposition deterrent in larval
frass of M. alternatus. Each test was replicated 19-20 times using different females.