CAJ | 학술논문

为杂交鲟养殖水体镉染毒的防控提供参考，采用静水法研究了镉离子不同浓度（0 mg/L，0．1 mg/L，0．5 mg/L，1 mg/L）对杂交鲟染毒24 h、48 h和72 h后其行为、血细胞和抗氧化酶活性的影响。结果表明：随镉浓度的增大其呼吸频率和摆尾频率逐渐增大，红细胞数目逐渐增多；随染毒时间的延长，3种指标逐渐降低。镉离子对杂交鲟白细胞，过氧化氢酶（CAT）、超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH-PX）活性的影响表现出一定剂量效应关系，即这些指标随镉离子浓度增加呈先升高后降低趋势；丙二醛（MDA）含量则在24 h、48 h 时随镉浓度增加而显著增加。同一浓度下，随染毒时间的延长，白细胞和CAT、SOD、SH-PX活性明显降低。说明，低浓度的镉离子对杂交鲟抗氧化酶活性和免疫功能有明显的增强作用；高浓度离子则抑制其免疫和抗氧化功能。
위잡교심양식수체력염독적방공제공삼고，채용정수법연구료력리자불동농도（0 mg/L，0．1 mg/L，0．5 mg/L，1 mg/L）대잡교심염독24 h、48 h화72 h후기행위、혈세포화항양화매활성적영향。결과표명：수력농도적증대기호흡빈솔화파미빈솔축점증대，홍세포수목축점증다；수염독시간적연장，3충지표축점강저。력리자대잡교심백세포，과양화경매（CAT）、초양화물기화매（SOD）、곡광감태과양화물매（GSH-PX）활성적영향표현출일정제량효응관계，즉저사지표수력리자농도증가정선승고후강저추세；병이철（MDA）함량칙재24 h、48 h 시수력농도증가이현저증가。동일농도하，수염독시간적연장，백세포화CAT、SOD、SH-PX활성명현강저。설명，저농도적력리자대잡교심항양화매활성화면역공능유명현적증강작용；고농도리자칙억제기면역화항양화공능。
The behavior,blood cell and antioxidase of hybrid sturgeon cultured in water with different Cd2+ concentrations after 24 h,48 h and 72 h were studied to provide a reference for hybrid sturgeon aquaculture in water populated with Cd2+. The results showed that the respiratory frequency (RF ), fishtailing frequency and red blood cell number of hybrid sturgeon increase with increase of Cd2+concentrations but three indexes decrease with prolongation of contamination duration gradually.The activity of CAT,SOD and GSH-PX and white blood cell number of hybrid sturgeon present the first rising and then decline trend with increase of Cd2+ concentrations.The MDA content increases significantly with increase of Cd2+ concentrations after 24 h and 48 h.The activity of CAT,SOD and GSH-PX and white blood cell number decrease under the same Cd2+ concentration with prolongation of contamination duration obviously,which indicates that low Cd2+ concentration can enhance antioxidase activity and immunity of hybrid sturgeon but high Cd2+ concentration inhibits its antioxidase activity and immunity.