• 한국잠사곤충학회지
• /
• 제37권1호
• /
• pp.57-61
• /
• 1995

토양에 존재하고 있는 새롭고, 특이한 활성을 갖는 B.t를 분리하기 위하여 춘잠 및 추잠기에 양잠농가의 토양을 채취하여 B.t의 분포를 조사하였다. 총 300개의 채취된 토양시료중에서 포자와 내독소 단백질을 생산하는 82개의 B.t를 분리했다. 분리된 B.t의 독성별 분석에서 봄에는 주로 나비목(Bombyx mori)에 독성을 띄는 균주(67%)가, 가을에는 나비목과 파리목(Culex pipiens)에 동시에 독성을 띄는 균주(67%)가 많이 분리되었다. 한편 딱정벌레목(Sitophilus oryzae)에 독성을 나타내는 것은 찾지 못했다. 또한, 내독소 단백질은 생산하지만, 독성을 띄지 않는 균주들도 봄에는 6%, 가을에는 27%의 비율로 분리되어 자연상태에서 흔히 존재함을 알 수 있었다.

• 환경생물
• /
• 제24권4호
• /
• pp.337-358
• /
• 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.