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감성돔(Acanthopagrus schlegelii) 및 참돔(Pagrus major) 치어에 대한 이산화염소(ClO<sub>2</sub>)의 급성 독성
이옥 ( Ock Lee ),서준혁 ( Junhyuk Seo ),서형원 ( Hyoungwon Seo ),장다희 ( Dahee Jang ),이재만 ( Jaeman Lee ),최태건 ( Taegun Choi ),박정환 ( Jeonghwan Park ) 한국수산과학회(구 한국수산학회) 2020 한국수산과학회지 Vol.53 No.3
This study evaluated acute toxicity of chlorine dioxide (ClO<sub>2</sub>) to juveniles of black seabream Acanthopagrus schlegelii (19.4±2.3 g, 10.7±0.4 cm) and red seabream Pagrus major (74.9±8.2 g, 15.9±1.0 cm). Thirty juveniles for each species were exposed to target ClO<sub>2</sub> concentrations of 0, 0.05, 0.1, 0.125, 0.15, 0.2, 0.3, 0.4, and 0.5 mg/L in triplicate for eight days. Half lethal concentrations for 96 hours were found at 0.14 and 0.24 mg ClO<sub>2</sub>/L for black seabream and red seabream, respectively. Red seabream larger than black seabream in body weight appears to be more resistance to chlorine dioxide. However, regardless of species or size, specific loading rates of chlorine dioxide to total fish weight (daily feeding amount of ClO<sub>2</sub> /total fish weight) were similar, showing 1.3 and 1.1 g ClO<sub>2</sub>/kg fish·day<sup>-1</sup> for black seabream and red seabream.