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J Korean Soc Environ Eng > Volume 38(4); 2016 > Article
J Korean Soc Environ Eng 2016;38(4): 193-200. doi: https://doi.org/10.4491/KSEE.2016.38.4.193
생태독성실험을 위한 한국 우점종 유리물벼룩(Daphnia galeata)의 특성 및 독성민감도: 큰물벼룩(Daphnia magna)과의 비교연구
최영설, 곽진일, 안윤주
건국대학교 환경과학과
Characteristics and Toxicity Sensitivity of Korean Dominant Species Daphnia galeata for Ecotoxicity Testing: Comparative Study with Daphnia magna
Rongxue Cui, Jin Il Kwak, Youn-Joo An
Department of Environmental Science, Konkuk University
Corresponding author  Youn-Joo An ,Tel: 02-2049-6090, Fax: 02-2201-6295, Email: anyjoo@konkuk.ac.kr
Received: November 11, 2015;  Revised: February 25, 2016;  Accepted: March 14, 2016.  Published online: April 30, 2016.
ABSTRACT
Water flea is a widely used test species in the aquatic ecotoxicity test. In Korea, D. magna is currently used as a standard test species, however that do not inhabit in the Korean aquatic ecosystem. In this study, Daphnia galeata, which is a dominant species in the Korean aquatic ecosystem, was collected from domestic lake and investigated to suggest the D. galeata for ecotoxicity assessment in Korea. We investigated the characteristics, life span, and toxicity sensitivity compared with D. magna. The life span test of D. galeata was performed in this study, and then the results were compared to the sensitivity with D. magna to confirm the applicability for ecotoxicity assessment. The 48h-L(E)C50 values for seven heavy metals (As, Cd, Cr, Cu, Hg, Ni, and Zn) of D. galeata and D. magna were collected and analyzed. As a results, shorter lifetime, less reproduction, smaller body size of D. galeata were observed compared with D. magna. D. galeata was similar or more sensitive than D. magna for seven heavy metals. Therefore, we propose that D. galeata is a suitable test species for ecotoxicity testing in Korea.
Key Words: Daphnia galeata, Daphnia magna, Life Span, Ecotoxicity, Toxicity Sensitivity
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