• Journal of Sericultural and Entomological Science
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• v.37 no.1
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• pp.57-61
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• 1995

In order to isolate naturally occuring novel B. thuringensis strains, we identified the distribution of B. thuringiensis from soils of sericultural farms(spring and autumn season, respectively) of various regions in Korea. A total of 82 strains of B. thuringiensis producing spore and crystal were isolated. We examined oral toxicity against lepidopterous larvae, Bombyx mori, dipterous larvae, Culex pipiens and coleopterous, Sitophilus oryzae. The results showed that 82 B. thuringiensis isolates from sericultural farms were isolated and most isolates were toxic to lepidopterous larvae. Particularly, B. thuringiensis strains which is lepidopterous-active, lepidopterous-and dipterous-active were widely distributed. Also, non-toxic B. thuringiensis isolate was common.

• Korean Journal of Environmental Biology
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• v.24 no.4
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• pp.337-358
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• 2006

The field survey was conducted weekly from April to October in 2004 and 2005 on the sites along the 5.16 road. Sampling sites were made every 100 m height starting from 250 m altitude of both sides of Mt. Halla along 5.16 Road, which crosses the mountain from North to South. Totally 31,698 individuals of 76 species belonged to 25 families were collected. It was July that showed the largest number of species, as 48 species in the northern sloper 42 in the southern slope, and 22 at the highest site (at an altitude of 750 m), while it was April that showed the smallest as 17 species, 15 and 5, respectively. As for monthly fluctuation, the northern slope and the highest site reached their top in August, whereas it was June in the southern slope. In the analyses of similarity (chord distance) of any pair of temporal communities, the closest pair was between June and July in the northern slope area, between July and August in the southern slope and between July and September at the highest site, respectively.