Effects of acute low-temperature stress on antioxidant capacity and histological structure of gills in Sebastes schlegelii
To investigate the effects of acute low-temperature stress on the antioxidant capacity and histological structure of gills in Sebastes schlegelii,an acute low-temperature challenge of 2℃was conducted in S.schlegelii compared to control group at 16℃.The comparative analysis was conduc-ted to examine the impacts on superoxide dismutase(SOD),catalase(CAT),total antioxidant capacity(T-AOC),malondialdehyde(MDA),and tissue status in the gill tissues at 0 h,2 h,6 h,and 12 h post-stress exposure.The results showed that SOD in the gill tissues of S.schlegelii showed upward tendency and then decreased with time,the SOD activity in the gill tissue was significantly lower than that in the control group at 12 h;CAT activity showed downward tendency and then increased;T-AOC was significantly lower compared with that of the control group;MDA activity showed a upward tendency and then decreased.Histological analyses showed different degrees of damage to gill tissues under acute low-temperature stress,such as bending of the ends of gill lamellae,swelling,basal hy-perplasia and shortening.This study demonstrated that low-temperature stress affected the activity of antioxidant enzymes in the gill tissues of S.schlegelii,causing damage of oxidative capacity and gill tissue.
Sebastes schlegeliiacute low temperature stressgillsantioxidant capacityhistological structure
万方数据
维普
