4-nonylphenol에 노출된 Tigriopus japonicus 암컷의 생존율과 포란율
The Survival Rate and the Rate of Attached Egg Sac for Female Tigriopus japonicus Exposure to 4-nonylphenol
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초록
포란한 성충 암컷 Tigriopus japonicus (요각류)를 내분 비계 교란물질로 잘 알려져 있는 4-nonylphenol에 노출하여 생존율과 포란율의 변화를 살펴보았다. 실험생물은 2004년 4월 제주도 구안연안에서 플랑크톤망으로 쓸어 잡기로 채집한 후 실내순응을 한 달 동안 시켰다. 치사 율은 노출농도의 높아지면 증가하였으나 그 경향이 뚜 렷하지 않았다. 반면, 노출 후 처음으로 치사한 개체가 발생하는 시기는 비처리군과 처리군에 따라 명백한 차 이를 보였다. 포란한 암컷을 실험조건에 이동시키면 생 리적인 변동으로 인해 알이 떨어졌다가 4~5일 후 비처 리군은 100% 포란을 회복하지만 처리 군에서는 89~ 95%가 회복되어 약제노출에 따른 영향을 보였다. 치사 가 발생하는 시기는 비처리 시에는 10일 후부터이지만 노출 시에는 4에서 6일 후부터 발생하였다.
Abstract
- The aim of this study was to evaluate the attach rate and survival rate for the femaleharpacticoid Tigriopus japonicusresponse to 4-nonylphenol, known endocrine disrupter. Theorganisms were sampled by net sweeping on the Jeju Island in April, 2004 were reared in thelaboratory condition. As the concentrations increased, the mortality was slowly increased. Thefirst day for appearing dead individuals was clearly different between control conditions andtreated conditions. When the female with egg sac was moved to experimental conditions for theinto four to five days. Usually the female in control group recovered egg sac but that in thetreated group made egg sac between 89% and 95% on exposed individuals. The dead individualsfor control conditions were showed on ten days after treating chemicals while those for treatedconditions were appeared four to six day after exposure to chemicals.
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