3种常见消毒药物对纤毛虫种群动力学的影响  

Effects of disinfectants on population growth of Fabrea salina

作　　者：张欣悦 孙思涵 崔雯婷 刘家乐 齐红莉 ZHANG Xinyue;SUN Sihan;CUI Wenting;LIU Jiale;QI Hongli(College of Aquaculture,Tianjin Agricultural University,Tianjin 300392,China;Tianjin Agricultural University/Tianjin Key Laboratory of Aqua-Ecology and Aquaculture,Tianjin 300392,China)

机构地区：[1]天津农学院水产学院,天津300392 [2]天津农学院/天津市水产生态及养殖重点实验室,天津300392

出　　处：《南方水产科学》2024年第6期43-52,共10页South China Fisheries Science

基　　金：山东省重大科技创新工程专项“海洋药源生物基础研究”(2018SDKJ0406-4);天津市高等学校大学生创新创业训练计划(202310061058)。

摘　　要：盐蚕豆虫(Fabrea salina)可作为海水经济动物的开口饵料。为探究高锰酸钾、聚维酮碘、二溴海因3种消毒剂对盐蚕豆虫产生的毒性效应和种群动力学影响,采用静水实验法测定盐蚕豆虫在不同浓度的3种消毒剂下,种群的生长率(r)和世代时间(G)变化。结果表明,高锰酸钾、二溴海因、聚维酮碘对盐蚕豆虫的24 h半数致死浓度(Lethal concentration 50,LC50)分别为1.182、1.067、18.451 mg·L^(-1),48 h LC50分别为0.925、0.748、19.620 mg·L^(-1);安全浓度(Safe concentration,SC)分别为0.170、0.110、6.655 mg·L^(-1)。盐蚕豆虫对3种消毒剂的敏感性依次为二溴海因>高锰酸钾>聚维酮碘。二溴海因、聚维酮碘、高锰酸钾的质量浓度分别为0.0748、1.9620、0.0925 mg·L^(-1)时,对盐蚕豆虫的种群生长抑制最显著(p<0.01),r分别为(0.57±0.009)、(0.57±0.005)、(0.47±0.007)d-1,G分别为(1.23±0.2)、(1.22±0.011)、(1.30±0.078)d。研究获得的高锰酸钾、聚维酮碘、二溴海因的安全浓度均低于水产养殖中的施药量,因此当以盐蚕豆虫作为开口饵料时,应注意消毒剂的使用剂量。Fabrea salina can be used as a first feed for marine economic animals.In order to investigate the toxic effects and population dynamics of three disinfectants(Potassium permanganate,povidoneiodine and dibromohydantoin)on F.salina,we conducted a static water test to study the growth rate(r)and generation time(G)changes of F.salina by different concentrations of these three disinfectants.The results show that the 24 h LC50 values of potassium permanganate,dibromo hydantoin and povidone iodine were 1.182,1.067 and 18.451 mg·L^(-1),respectively;the 48 h LC50 values were 0.925,0.748 and 19.620 mg·L^(-1),respectively;the safe concentrations(SC)were 0.170,0.110 and 6.655 mg·L^(-1),respectively.The sensitivity of F.salina to these disinfectants followed a descending order of dibromohydantoin>potassium permanganate>povidone iodine.Besides,the most significant inhibition for F.salina growth was observed at 0.0748 mg·L^(-1)of dibromo hydantoin,1.962 mg·L^(-1)of povidone iodine and 0.0925 mg·L^(-1)of potassium permanganate(p<0.01),with corresponding growth rates(r)of(0.57±0.009),(0.57±0.005)and(0.47±0.007)d-1,and generation times(G)of(1.23±0.2),(1.22±0.011)and(1.30±0.078)d,respectively.The safe concentrations of potassium permanganate,povidone iodine and dibromo hydantoin obtained in this test were all lower than the dosages employed in aquaculture.Thus,attention should be paied to the dosage of these disinfectants when using F.salina as a first feed.

关 键 词：盐蚕豆虫 二溴海因 高锰酸钾 聚维酮碘 毒性效应 

分 类 号：S917.4[农业科学—水产科学]