해산로티퍼 (Brachionus plicatilis)의 생존 및 개체군 성장률을 이용한 Phenanthrene의 독성평가

서지정보

ㆍ발행기관 : 한국환경생물학회 ㆍ수록지정보 : 환경생물 / 35권 / 4호
ㆍ저자명 : 황운기, 최훈, 장수정, 허승, 이주욱

목차

서 론
재료 및 방 법
1. 시험생물
2. Phenanthrene 농도 조성
3. 생존율
4. 개체군 성장률
5. 통계분석
결 과
1. 생존율 변동
2. 개체군 성장률 변동
3. 생존 및 개체군 성장률을 이용한 독성평가
고 찰
적 요
REFERENCES

영어 초록

The oxicity assesment of Phenanthrene (PHE) has been investigated by using the rate (r) of survival and population growth in rotifer Brachionus plicatilis. The survival rate was determined after 24 h of exposure to PHE. The survival rate of PHE had no effect at a maximum of 300 mg L-1. The r was determined after 72 h of exposure to PHE. It was observed that r in the controls (absence PHE) was greater than 0.5, but that it suddenly decreased with an increased concentration of PHE. PHE reduced r in a dose-dependent manner and a significant reduction occurred at a concentration of greater than 37.5 mg L-1. The EC50 value of r in PHE exposure was 63.7 mg L-1. The no-observed-effect-concentration (NOEC) of r in PHE exposure was 18.8 mg L-1. The lowest-observed-effect-concentration (LOEC) of r in the PHE exposure was 37.5 mg L-1. From the results, the concentration of PHE (greater than 37.5 mg L-1) has a toxic effect on the r of B. plicatilis in natural ecosystems. These results (including NOEC, LOEC and EC50) might be useful for the Polycyclic aromatic hydrocarbons (PAHs) toxicity assessment in marine ecosystems.

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