[Short Note] Effects of LAS on the Membrane Potential of Gill Epithelium in Young Tigerperch (Terapon jarbua)
Dar-Yi Wang
Institute of Fisheries, National Taiwan Ocean University, Keelung, Taiwan 202, R.O.C.
Bao-Quey Huang
In order to investigate the effects of LAS (Linear Alkylbenzene Sulfonate) on gill epithelium membrane potential, young tigerperch (Terapon jarbua), body lengths ranging between 57.5 and 67.5 mm, were kept in different concentrations of LAS for acute toxicity study. Intracellular recording results demonstrated that membrane potential shifted from -6.7 ± 1.4 mV (n = 75) to -5.1 ± 1.1 mV (n = 63) and -3.9 ± 1.1 mV (n = 65) when the LAS concentrations were changed by 5 ppm and 10 ppm, respectively. The decreasing membrane potential results in this study imply that LAS may lead to gill epithelium depolarization.
Keywords
LAS, Intracellular recording, Estuarine teleost
