Fluorescent dust marking and sentinel pupal bags were used in 1998 and 1999 to examine dispersal, spatial distribution, and duration of activity of mass-released Spalangia cameroni Perkins in a swine facility. In 1998, four releases were conducted in the period May–November and in 1999 a final release was completed in August. Males were observed in large numbers on window sites shortly after releases, whereas females seemed to remain in the environment. However, in one trial, and probably due to high air temperatures in the facility, a similar flight propensity toward the window sites was noted for the females. The distribution of parasitoids was clearly aggregated within a perimeter of 3 m from the release point. The duration of activity of marked S. cameroni, measured as the number of attacked sentinel pupal bags and parasitism, declined to a low level within 2 wk from the time of release. The results are discussed in relation to release strategies of S. cameroni in control of nuisance flies.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.