A ecological survey of Ceratovacuna japonica (Takahashi) (Hemiptera, Aphididae) in Korea

ABSTRACT We carried out an ecological survey for Ceratovacuna japonica, which lives in bamboos, at the experimental field ofNational Academy of Agricultural Science, Suwon and the several natural fields in Korea from 2010 to 2011. Thereleasing methods of C. japonica on Pseudosasa japonica was more effective at the brushing-off method than the pin-ing-attached method. The successful rate of releasing was the highest at green house than others such as at outdoor, vinylgreen house and in a insects net conditions. The survival limit of C. japonica was closely associated with the lowesttemperature (−10 o C) of vegetative limit of P. japonica for over wintering because of two fields of Ilsan lake park andGuri ecological park showed falling down below −15 o C two times in January. It provides for a reasonable distributioninformation of C. japonica that is restricted to south of Han River. However, the middle of Korea has rarely fallen downbelow −10 o C. Therefore, we consider that a successful rearing of C. japonica may be the most suitable in green housecondition to overcome winter period. Key words : Ceratovacuna japonica, Taraka hamada, Pseidosasa japonica, Temperature, Ecology