【摘要】 以斑马鱼为受试生物,研究在低浓度(0.005、0.05、0.5μg.L-1)林丹暴露条件下,林丹对斑马鱼体长、体质量、肝脏指数、性腺指数、产卵量和受精率的影响。结果显示,经14 d暴露后,处理组斑马鱼体长和体质量与空白对照组或溶剂对照组之间差异不显著;与空白对照组和溶剂对照组相比,0.5μg.L-1处理组雄性和雌性斑马鱼肝脏指数均显著增加(P<0.05),雄性斑马鱼性腺指数显著降低(P<0.05),其他处理组无明显变化;林丹对斑马鱼产卵量和受精率表现出明显的抑制作用,与空白对照组相比,0.05和0.5μg.L-1处理组斑马鱼平均产卵量和受精率均极显著降低(P<0.01)。该研究表明林丹具有环境内分泌干扰物特性,在低浓度暴露条件下可对斑马鱼的生长发育和繁殖产生一定抑制影响。更多还原

【Abstract】 Effects of exposure to low concentrations(0.005、0.05、0.5 μg·L-1) of lindane on body length,body weight,hepaticosomatic index(HSI),gonadosomatic index(GSI),spawning and fertilization of zebrafish were studied.Results show that after 14 days of exposure,zebrafish in all the treatments did not have much difference from those in the controls(without lindane and just with solvent) in body length and body weight.But in Treatment 0.5 μg·L-1,the HSI of both male and female zebrafish increased significantly(P<0.05) and only the GSI of male zebrafish decreased significantly(P<0.05),while no obvious changes in the two indices were found in the other treatments.Compared with what was found in the two controls,lindane remarkably inhibited zebrafish reproduction behavior and reduced spawning and fertilization rate,particularly in Treatments 0.05 and 0.5 μg·L-1(P<0.01).The findings demonstrate that lindane in the environment is an endocrine disruptor that inhibits to a certain extent the growth and reproduction of zebrafish at low concentration.更多还原