Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Types of Mentum Deformity for Chironomus riparius Exposure to DEHP

DEHP에 노출된 Chironomus riparius의 하순기절에 나타난 기형 유형들

  • Kwak, Inn-Sil (Faculty of Marine Technology, Chonnam National University) ;
  • Jeong, Gyeong-Suk (Faculty of Marine Technology, Chonnam National University)
  • 곽인실 (전남대학교 해양기술학부) ;
  • 정경숙 (전남대학교 해양기술학부)
  • Published : 2008.03.30
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Abstract

Induction of morphological deformities in Chironomus riparius larvae was assessed after exposure to 0.3, 1, 10 and 30 ${\mu}g\;L^{-1}$ potential endocrine disruption chemicals, Diethylhexyl phtalate (DEHP). We observed and subdivide types of mentum deformities and counted the incidence of mentum deformities. The mortality was not increased according to concentrations of DEHP, while was depend on the exposed days. The incidence of mentum deformities for MLT (median lateral teeth), LT (lateral teeth), and MIX (MLT+LT) of the mentum morphological structure showed MLT (2.8$\sim$11.4%)>LT (2.8$\sim$2.9%)>MIX (2.8$\sim$3.0%). The type of mentum deformities on C. riparius was classified six groups following exposure to DEHP. The incidence rate was occupied following to tooth addition (4.3%), tooth split (2.8%), tooth deletion (2.4%), tooth fusion (1.4%), $K"{o}hn$ gap (0.5%) and abnormal shape (0.5%). Especially tooth split and tooth fusion were observed in DEHP treated conditions.

실내에서 사육된 C. riparius를 대상으로 내분비계 교란물질인 DEHP를 처리하여 노출시간에 따른 기형발생률과 발생한 기형의 유형을 세분화하였다. 하순기절 구조별 기형발생률은 MLT (medial lateral tooth)에서 가장 높았고 그 다음이 LT (lateral tooth), MIX 순으로 높게 나타났다. 비처리군과 처리군 모두 MLT 단독의 기형이 가장 많았다. 하순기절의 기형유형은 여섯 가지로 세분화하였다. 발생빈도가 높은 기형유형은 tooth 추가(4.3%), tooth 쪼개짐(2.8%), tooth 결실 (2.4%), tooth 합쳐짐 (1.4%), $K"{o}hn$ gap (0.5%)과 형태적 이상(0.5%) 순으로 발생하였다. 약제 처리에서만 관찰된 기형은 tooth 쪼개짐과 tooth 합쳐짐이었다.

Keywords

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