Singh Divya Jyoti, Singh D K
Malacology Laboratory, Department of Zoology, DDU Gorakhpur University, Gorakhpur, U.P., India.
Malacology Laboratory, Department of Zoology, DDU Gorakhpur University, Gorakhpur, U.P., India.
J Photochem Photobiol B. 2015 Mar;144:57-60. doi: 10.1016/j.jphotobiol.2015.01.016. Epub 2015 Feb 16.
Toxicity of chlorophyllin against redia and cercaria larvae of Fasciola gigantica was studied under irradiation of visible light. Highest and lowest toxicity of chlorophyllin against both larvae was noted under red (redia - 8 h LC₅₀ 7.88 mg/10 mL and cercaria - 11.99 mg/10 mL) and green (redia - 8 h LC₅₀ 32.12 mg/10 mL and cercaria - 8 h LC₅₀ 43.80 mg/10 mL) light irradiation respectively. The highest toxicity of chlorophyllin under red light irradiation against redia (8h LC₅₀ 7.88 mg/10 mL)/cercaria (8h LC₅₀ 11.99 mg/10 mL) was followed by white (8 h LC₅₀ redia - 20.48 mg/10 mL, 8 h LC₅₀ cercaria - 18.0 3mg/10 mL), blue (8 h LC₅₀ redia - 33.10 mg/10 mL/ 8 h LC₅₀ cercaria - 19.98 mg/10 mL) and yellow (8 h LC₅₀ redia - 23.87 mg/10 mL/ 8 h LC₅₀ cercaria - 23.48 mg/10 mL). Chlorophyllin treatment in darkness (control I) and without treatment of chlorophyllin, while all other conditions were same as treatment group (control II) caused no mortality of redia/cercaria larva. Chlorophyllin might be a promising new safe strategy to replace synthetic larvicide in fasciolosis control programme.
在可见光照射下研究了叶绿酸对巨片形吸虫雷蚴和尾蚴幼虫的毒性。叶绿酸对两种幼虫的最高和最低毒性分别出现在红光（雷蚴 - 8小时半数致死浓度为7.88毫克/10毫升，尾蚴 - 11.99毫克/10毫升）和绿光（雷蚴 - 8小时半数致死浓度为32.12毫克/10毫升，尾蚴 - 8小时半数致死浓度为43.80毫克/10毫升）照射下。在红光照射下，叶绿酸对雷蚴（8小时半数致死浓度为7.88毫克/10毫升）/尾蚴（8小时半数致死浓度为11.99毫克/10毫升）的毒性最高，其次是白光（雷蚴8小时半数致死浓度为20.48毫克/10毫升，尾蚴8小时半数致死浓度为18.03毫克/10毫升）、蓝光（雷蚴8小时半数致死浓度为33.10毫克/10毫升/尾蚴8小时半数致死浓度为19.98毫克/10毫升）和黄光（雷蚴8小时半数致死浓度为23.87毫克/10毫升/尾蚴8小时半数致死浓度为23.48毫克/10毫升）。在黑暗中进行叶绿酸处理（对照I）以及不进行叶绿酸处理，而所有其他条件与处理组相同（对照II），均未导致雷蚴/尾蚴幼虫死亡。在片形吸虫病控制计划中，叶绿酸可能是一种有前景的新型安全策略，可替代合成杀幼虫剂。
