Concentration of Heavy Metal and Alteration of Reproductive and Histological Biomarker of Mytilus galloprovincialis in Gamak Bay of the Southern Coast of Korea

ABSTRACT This study investigated concentration of metal ions, intersexuality and histological alterations of digestive gland in Mytilus galloprovincialis . Samples were collected from two areas of Gamak Bay in May, 2010. The concentration of metal ions showed that Al (366.5 ± 249.7 mg/kg) was highest and Zn (179.5 ± 67.8 mg/kg) was second high concentration. Co (1.0 ± 0.2 mg/kg) was lowest. The intersexuality was 26.4% and males (38.8%) was higher than the females (12.9%). Intersex type was observed four types. Destruction of digestive tubule epithelium was highest among other biomarker in digestive gland. Distribution of basophilic cell and lipofuscin was 6.1% and 1.5%, respectively. Key Words: Mytilus galloprovincialis , heavy metal, biomarker, Gamak Bay 서 론 수서생태계에서 생물에게 미치는 화학적 스트레스 요인은 중금속, 내분비계장애물질 (EDCs, endocrine disrupting chemicals) 과 난분해성화학물질 (POPs, persistent organic pollutants) 등이 있다 (Rand and Petrocelli, 1985). 이 가운데 중금속은 생물 체내 축적성이 강하고 대사 , 생화학, 생리학적 및 조직학적 반응의 변화를 유도한다 (Stasiūnaitė, 1999; Kim