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Intersexuality of Two Bivalve Species in Ha Long Bay, Vietnam

Yun Kyung Shin, Suji Kim, Mi Ae Jeon, Yeon Gyu Lee and Jung Sick Lee

Aquaculture Management Division, Aquaculture Research Institute, NFRDI, Busan 619-902, Korea Department of Aqualife Medicine, Chonnam National University, Yeosu 550-749, Korea Faculty of Marine Technology, Chonnam National University, Yeosu 550-749, Ko

This study investigated concentration of metal ions in sediment and intersexuality in Polymesoda erosa and Lutraria lutraria. Samples were collected from five areas of Ha Long Bay in October, 2012. The concentration of metal ions showed that Al (37390.0 ± 11816.5 mg/kg) was highest and Mn (360.4 ± 101.4 mg/kg) was second high concentration. Cd (0.04 ± 0.05 mg/kg) was lowest. The intersexuality was 14.3% in P. erosa and 9.1% in L. lutraria that observed only in female.

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