Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Erects of Ivermectin Contained-Cattle Dung on the Development of Earthworm, Eisenia fetida

Ivermectin이 함유된 우분이 줄지렁이에 미치는 영향

  • Bang, Hea-Son (National Institute of Agricultural Science and Technology, RDA) ;
  • Na, Young-Eun (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Myung-Hyun (National Institute of Agricultural Science and Technology, RDA) ;
  • Han, Min-Sun (National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Jeong-Taek (National Institute of Agricultural Science and Technology, RDA)
  • 방혜선 (농촌진흥청 농업과학기술원) ;
  • 나영은 (농촌진흥청 농업과학기술원) ;
  • 김명현 (농촌진흥청 농업과학기술원) ;
  • 한민수 (농촌진흥청 농업과학기술원) ;
  • 이정택 (농촌진흥청 농업과학기술원)
  • Received : 2006.10.25
  • Accepted : 2007.02.28
  • Published : 2007.04.30
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Abstract

The effects of faecally excreted ivermectin on the survival and growth of the common Korea earthworm Eisenia fetida (Savigny), have been studied in the laboratory. Cow dung was collected 1, 2, 3 and 7 days after ivermectin subcutaneous injection. The mortality of the worms provided with untreated dung was 0% whereas mortality within a week was high as 73.7%, 98.3% in dung which were excreted 1 and 2 days from dosing, respectively. The growth rate of the worms fed dung from 1 day excreted dung from cattle given ivermectin was 75% lower than that recorded on the control. In total number of hatchling earthworm in each treatment, 1 day after treatment produced the lowest compared with untreated control. However, dung from cattle treated with ivermectin did not prevented the rate of hatchling from each cocoon of earthworm. The results show that ivermectin is less toxic to $2^{nd}$ generation of earthworm. We concluded that ivermectin have adverse effects on the survival and growth of E. fetida when exposed through dung under laboratory conditions. This results will be discussed in relation to the effects of anthelmintics on non-target organism in our ecosystem.

가축용 구충제로 사용되어지고 있는 ivermectin이 토양 동물중 대표적인 비표적 생물인 지렁이(Eisenia fetida)에 미치는 영향을 조사하였다. Ivermectin $250{\mu}g$를 피하주사한 소로부터 배출되는 우분을 1, 2, 3, 7일째 채취하여 생물검정을 시도한 결과 1, 2일째 배출된 우분은 급성 독성을 나타내어 73.7%와 98.3%의 치사율을 보였다. 또한 발육율에 있어서도 1일째 우분을 섭취한 줄지렁이의 발육이 대조군에 비해 현저히 떨어지는 것으로 나타났고, 전혀 산란을 하지 못했다. Ivermectin 처리후 1, 2 일째 배출된 우분은 지렁이에 있어 급성독성을 나타내고 2세대의 부화율에도 영향을 미치지만, 3일째 이후 배출된 우분에서는 급성 및 만성독성은 나타나지 않았다. 결과적으로, ivermectin을 소에 처리하고 1, 2일째 배설된 우분에는 상당량의 ivermectin이 함유되어 지렁이등과 같은 분해성 비표적 생물의 발육에 영향을 미칠 수 있음이 관찰되어 초지에서 영양물질 순환의 차원에서나 지렁이 먹이로써의 우분에 대한 관리가 요망되는 바이다.

Keywords

References

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