摘要
用孔雀绿、福尔马林对罗氏沼虾各期蚤状幼体及仔虾进行急性毒性试验。结果表明，孔雀绿的２４ｈＬＣ５０是：蚤状幼体为０．１４１～０．２５７×１０－６、仔虾为０．２７１×１０－６；４８ｈＬＣ５０是：蚤状幼体０．０７７～０．１５２×１０－６、仔虾为０．１７４×１０－６；安全浓度蚤状幼体为０．００７～０．０１６×１０－６、仔虾为０．０２１×１０－６．福尔马林的２４ｈＬＣ５０是：蚤状幼体为２３，５～５１．９×１０－６、仔虾为４２．６×１０－６；４８ｈＬＣ５０是：蚤状幼体为１４．３～３３．６×１０－６、仔虾为２８．７×１０－６；安全浓度蚤状幼体为１．２～４．２×１０－６、仔虾为３．９×１０－６。
Acute toxicity of malachite green and formalin is used on zoea and post larva ofM.rosenbergii in static bioassay tests.The data show that the LC50 values (medium lethalconcentration ) of malachite green for zoea and post larva of M.rosenbergii in 24-h are 0. 141-0. 257×10-6 and 0.271×10-6;in 48-h,0.077-0.152×10-6 and 0.174×10-6,the SC(safe concentration) values of malachite green for zoea and post larva of M.rosenbergii are 0.007 - 0.016×10-6 and 0.021×10-6,the LC50 values of formalin for zoea and post larva ofM. rosenbergii in 24-h are 23.5-51.9×10-6 and 42. 6×10-6;in 48-h, 14. 3- 33.6×10-6and 28.7×10-6,the SC values of formalin for zoea and post larva of M.rosenbergii are 1.2- 24.2×10-6 and 3.9×10-6.The results indicate that the tolerance of zoea-Ⅰ is the strongestsmong all of the zoea stages.
关键词
孔雀绿
福尔马林
罗氏沼虾
蚤状幼体
毒性
malachite green formalin
Macrobrachium rosmbergii
zoea
medium lethalconcentration
safe concenteation
