Prasad M S
Department of Zoology, Bihar University, Muzaffarpur, India.
Biomed Environ Sci. 1994 Dec;7(4):327-36.
Histopathological effects of sublethal (0.1, 0.2, 0.3 ppm) and lethal (0.5, 1.0 ppm) solutions of mercuric chloride (HgCl2) have been studied on the gills of the air breathing catfish, Heteropneustes fossilis at the intervals ranging from 6h to 15 days. Thickening of the epithelium, swelling and hyperplasia of the mucous cells, fusion of secondary lamellae, formation of interlamellar bridge and deposition of mucous over the entire surface are some noteworthy features of mercury poisoning in sublethal concentrations. Acute pathological manifestations are formation of subepithelial space, sloughing of the epithelial layer, hemorrhage and hypertrophy of the mucous cells. Causes and impact of these cellular alterations affecting survival of the fish have been discussed.
研究了氯化汞（HgCl2）亚致死浓度（0.1、0.2、0.3 ppm）和致死浓度（0.5、1.0 ppm）溶液对呼吸空气的鲶鱼——印度胡鲶鳃的组织病理学影响，时间间隔为6小时至15天。上皮增厚、黏液细胞肿胀和增生、次生鳃小片融合、片间桥形成以及整个表面黏液沉积是亚致死浓度汞中毒的一些显著特征。急性病理表现为上皮下间隙形成、上皮层脱落、出血和黏液细胞肥大。讨论了这些细胞改变影响鱼类生存的原因和影响。
