Effects of Linear Alkylbenzene Sulfonate (LAS) on the Respiratory Functions of Tigerperch (Terapon Jarbua)

清潔劑LAS對花身雞魚呼吸功能之影響

黃寶貴(Bao-Quey Huang) ； 王達益(Dar-Vi Wang)

《Zoological Studies》 33卷3期 (1994/07) Pp. 205-210

摘要

為評估合成清潔劑LAS（Linear Alkylbenzene Sulfonate）對花身雞魚（Terapon jarbua）呼吸功能之毒性作用，本實驗針對三方面主題（半致死劑量，呼吸曲線及鰓之病理變化）進行探討。依死亡或然率（Probablity mortality）模式化求得LAS 24小時之半致死劑量濃度為3.28ppm；由其呼吸曲線檢定其呼吸速率，致死溶氧值及存活時間之顯著變化均出現在LAS濃度3.5ppm和5.0ppm之間；病理組織切片顯示鰓部之上皮組織（epithelium）出現腫脹，剝落及壞死，利用無母數的統計檢定法（Non-parametric statistic method）比較鰓部之病理變化，其顯著變化在2.5ppm和5.0ppm之間。因此，清潔劑LAS對河口性花身雞魚造成鰓部組織之病變，呼吸受阻，甚或致死。

關鍵字

半致死劑量 ； 耗氧曲線 ； 組織病變 ； 河口魚種

並列摘要

The changes occurring in the respiratory functions of tigerperch (Terapon jarbua) were examined in order to evaluate the toxic effects of linear alkylbenzene sulfonate (LAS). Three approaches i.e. LC50, respiratory curve, and pathomorphological changes in gills were measured after exposure to sublethal concentrations of LAS.The detergent treatment was observed to be accompanied by a significant decrease in respiratory rate from 0.018 ppm/min to 0.012 ppm/min, when LAS concentration changed from 3.5 ppm to 5.0 ppm. The destruction of secondary lamella in gill epithelium was found through means of non-parametric statistic method (McCormick 1989) to become significant when LAS concentration reached 2.5 ppm. The 24 hr LC50 value was 3.28 ppm as obtained by probability mortality method. The toxic effects of LAS on the respiratory functions have been reflected by the changes in both respiratory rates and the damage of gill epithelium. Thus, lethal was probably caused by the decreasing performance of the respiratory function.

並列關鍵字

LC50 ； Oxygen consumption curve ； Histopathology ； Estuarine fish