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        검색결과 2

        1.
        2009.05 구독 인증기관·개인회원 무료
        Moths were caught by using two 22W UV black light traps per treatment during May, June, August and September in 2007 from our study sites. Our study areas of the Korea Long Term Ecological Research (KLTER) sites were Mt. Nam with two plant communities (Quercus mongolica, Pinus densiflora), Mt. Jiri with three plant communities (Q. mongolica, P. densiflora, Abies koreana), Mt. Wolak with three plant communities (Q. mongolica, P. densiflora, Q. variabilis), and Mt. Jumbong with t재 plant communities (Q. mongolica, P. densiflora). The purpose of this study was to compare the species diversity of major plant feeders, Lepidopteran species (moths) at each forest type of the regional KLTER sites. Overall, the total numbers of moth species we’ve collected from the all KLTER sites in 2007 were 670 species. For the three plant communities, Mt.Jiri (11 family, 259 species, 2372 individuals) was the highest site and Mt. Wolak (7 family, 401 species, 2243 individuals) was the next highest. For the two plant communities, Mt. Jumbong (14 family, 166 species, 1750 individuals) was highest and Mt Nam (4 family, 21 species, 142 individuals) was very few. The ordination analyses, Nonmetric multidimensional scaling (NMS) and cluster analysis, showed distinct clusters separating the assemblages of moth found at each site and each plant community of the KLTER sites (P<0.05 from MRPP). Therefore, we suggest that our sustainable monitoring will verify the distinct cluster with the forest type at each site with many replications.
        2.
        2009.05 구독 인증기관·개인회원 무료
        We assessed the environmental risk of herbicide resistant transgenic rice (Protox) on non-target herbivore, grasshoppers (Oxya japonica japonica Thunberg). We conducted life-history experiments of grasshoppers with measuring their body weight, body length, eating amount, and feces amount between non-transgenic rice (nTR; Dongjin rice) and transgenic rice (TR; Protox rice) under laboratory conditions (Temp. 25Ð, R.H. 50-70%, Photoperiod L16:D8) in 2007. The growth of grasshoppers appeared to increase at each measuring date. We also compared the growth rate of grasshoppers between nTR and TR to examine the transgenic impact on the herbivore and we found there was no statistically signifi cant difference between the two plant types (P>0.05). We found that body weight and body length for grasshoppers were highly correlated at each of the two types of plants, nTR (0.962) and TR (0.960). The correlation of eating amount and feces amount of grasshoppers were higher nTR (0.830) than TR (0.782). The energy effi ciency of the grasshopper was not a signifi cant between nTR and TR (P> 0.05). But the molt timing of the grasshoppers for TR difference was faster than for nTR. Conclusively life-history of the grasshoppers but molt timing was not a signifi cant difference between nTR and TR. Therefore, we could conclude there was not any environment risk on herbivore from our result.