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Types of Mentum Deformity for Chironomus riparius Exposure to DEHP  

Kwak, Inn-Sil (Faculty of Marine Technology, Chonnam National University)
Jeong, Gyeong-Suk (Faculty of Marine Technology, Chonnam National University)
Publication Information
Korean Journal of Environmental Biology / v.26, no.1, 2008 , pp. 36-41 More about this Journal
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.
Keywords
Chironomus riparius; DEHP; mentum deformity types; tooth split; tooth fusion;
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Times Cited By KSCI : 4  (Citation Analysis)
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