Oxygen Consumption, Ammonia-N Excretion, and Growth Rate in Juvenile Green-Neon Shrimp (Neocaridina denticulata) Exposed to Chlordane and Lindane

可氯丹(Chlordane)及林丹(Lindane)對多齒新米蝦(Neocaridina denticulata)所造成之慢性毒性影響

黃大駿(Da-Ji Huang) ； 陳弘成(Hon-Cheng Chen)

《Acta Zoologica Taiwanica》 14卷2期 (2004/10) Pp. 65-76

https://doi.org/10.6576/AZT.2004.14.(2).1

摘要

可氯丹(chlordane)及林丹(lindane)爲長效性有機氯殺蟲劑。本研究目的在瞭解環境中殘留的可氯丹及林丹對多齒新米蝦(Neocaridina denticulata)所造成之慢性毒性影響。將多齒新米蝦曝露於亞致死濃度之可氯丹（1及10ng/L）及林丹（0.1及1μg/L）下來進行試驗，於曝露後測定多齒新米蝦成長速率、脫殼時間、耗氧(QO2)、排氨量(ENH4(上標 +))及氧氮比(O:Nratio)改變的情形。實驗結果顯示可氯丹及林丹均會抑制成長及改變脫殼時間，並使曝露初期各組的耗氧量上升；而在實驗後期的第14至28天，各試驗組的耗氧量則會逐漸回復正常值。此外，可氯丹的試驗組中排氨量降低，氧氮比增加；而林丹的試驗組則呈現排氨量上升，氧氮比減少的情形。由此可知，多齒新米蝦的成長的確受到亞致死濃度之可氯丹（1及10ng/L）及林丹（0.1及1μg/L）的毒性影響。

關鍵字

可氯丹 ； 林丹 ； 多齒新米蝦 ； 慢性毒

並列摘要

The purpose of this study was to investigate the chronic toxicity of chlordane and lindane as well as their sublethal concentration effects on green-neon shrimp (Neocaridina denticulata), a common habitant of freshwater systems of eastern Asia and Hawaii. In this study, the effects of experimental concentrations of 1 and 10 ng/L of chlordane and 0.1 and 1 μg/L of lindane on the growth rate, the duration of the molt cycle, oxygen consumption (QO2), ammonia-N excretion (ENH4(superscript +)), and the O:N ratio were examined. Results indicated that growth rates of the were lower than those of the control group, and the molt cycle duration times had also been altered. In all treatments, we also observed that QO2 increased in the first few days, then it gradually returned to normal during the latter part of the experiment from days 14 to 28. Furthermore, a decrease in ENH4(superscript +) and an increase in the O:N ratio were observed in chlordane-treated groups, while lindane showed significantly increased ENH4(superscript +) and a decreased O:N ratio compared to the control. Accordingly, the results of this study demonstrate that lower concentrations of both chlordane and lindane toxicity to N. denticulate, even though their effects varied.

並列關鍵字

chlordane ； chronic toxicity ； lindane ； Neocaridina denticulate