Nymphs of Leptocorisa chinensis Dallas were reared on seed heads of various plant species to investigate this bug’s host range. Hatched nymphs were released onto gramineous and nongramineous species. Twenty-four hours after release, the percentage of nymphs that had settled on the plants varied from >90% in all but one gramineous species to 50% or less in the nongramineous species. It is therefore considered that nymphs can discern gramineous plants from nongramineous plants. Nymphs were reared until adult emergence, and the survivors were counted. Nymphs that had been reared on Oryza sativa L. (rice), Digitaria ciliaris (Retz.) Koeler, Poa annua L., or some other gramineous species were able to grow to adulthood, whereas nymphs that had been reared on some other gramineous species such as Eleusine indica (L.) Gaertn., Paspalum dilatatum Poir., Elymus racemifer (Steud.) Tzvelev, Bromus catharticus Vahl, or nongramineous species were not able to grow to adulthood. Results indicate that suitable plant species for the development of nymphs are restricted to a fraction of all gramineous species. Among food gramineous plants, summer plant species that bear seeds in reproductive season of L. chinensis retained high survival rates in young instars compared with spring plant species.
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.
Vol. 101 • No. 3