三种水产药物对人工繁育子一代大鳍幼鱼的急性毒性试验

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关键词：大鳍（Mystusmacropterus）；水产药物；急性毒性；半致死浓度；安全浓度中图分类号：S948 文献标识码：A文章编号：0439-8114（2025）11-0140-04DOI：10.14088/j.cnki.issn0439-8114.2025.11.018开放科学（资源服务）标识码（OSID）：

Acute toxicity test of three aquatic drugs on the first generation of artificial breeding Mystus macropterus juveniles

XUChao，MINGWei，ZHOU Zuo-kun，HUANGLi-guo （Nanchong Academy of Agricultural Sciences，Nanchong 637ooo，Sichuan，China）

Abstract：Toexplorethetoxicityofthrecommonquaticdrugstothefirstgenerationofartfiialbreedingofjuvenile Mystusmcropterus，and to evaluate the safety of drug use，under the hydrostatic conditions of water temperature 26-28 C ，pH7.2-8.3 and dissolvedoxygen6.5-8.3mg/L，theacutetoxicitytestwascarredoutonjuvenileM.macropteruswithbodylength（9.47.39）cmand bodyweight（7.56±0.77） by using povidone iodine，chlorine dioxide and glutaraldehyde and benzalkonium bromide mixture.The results showed that the median lethal doses of povidone iodine at 24，48 and96 h were 18.410，17.610 and 17.210mg/L ，respectively. The safe concentration was 4.720mg/L . The semi-lethal doses of chlorine dioxide at 24，48 and96 h were 6.0oo，5.790 and 5.420mg/L ， respectively.Thesafeconcentrationwas1.62Omg/L.Thesemi-lethaldosesof glutaraldehydeandbenzalkoniumbromidemixtureat 24，48 and96h were1.030，0.890 and 0.830mg/L ，respectively，and the safe concentrationwas 0.20mg/L .Thesensitivityofthe first generation of juvenile M .macropterus to the three drugs was as folows：glutaraldehyde and benzalkonium bromide mixture > chlorine dioxide > povidone iodine.Chlorine dioxideand povidone iodinecould ensureaquaculture safety forthefirst generationof juvenile M macropterus under standardized application conditions.

KeyWords：Mystus macropterus；aquatic drug；acute toxicity；semi-lethal concentration；safeconcentratior

大鳍（Mystusmacropterus）是中国长江与珠江水系特有种质资源，具有显著的区域经济价值。（剩余6021字）