水生生物学报2017，Vol.41Issue(6)：1242-1250,9.DOI:10.7541/2017.154
中华绒螯蟹水瘪子病不同发病阶段的病理变化特点
PATHOLOGICAL CHANGES OF SHUI-BIE-ZI DISEASED CHINESE MITTEN CRAB ERIOCHEIR SINENSIS IN THE DIFFERENT STAGES OF DISEASE
摘要
Abstract
The pathological changes of"shui-bie-zi" diseased Chinese mitten crab Eriocheir sinensis were analyzed in order to understand the process of disease occurrence and development and reveal the nature of disease.According to hepatopancreatic colours of the diseased crabs,the disease was divided into four stages of light yellow,light pink,milky white and grey respectively.The results showed that as the development of the disease,the weight ratio of hepatopancreas with crab body reduced gradually,and the weight ratio of haemolymph in the cavity with crab body and the diameter of hepatopancreatic tube decreased gradually.These indexes of diseased crabs in four stages of disease were extremely significant difference compared to healthy crabs respectively (P＜0.01).Except there were no significant differences of the weight ratios of hepatopancreas with crab body between the milky white stage and the grey stage,and of haemolymph in the cavity with crab body between the light pink stage and the milky white stage and between the milky white stage and the grey stage,and of the diameter of hepatopancreatic tubes between the milky white stage and the grey stage (P＞0.05) and there was significant difference of the diameter of hepatopancreatic tubes between the light pink stage and the milky white stage (P＜0.05),these indexes were extremely significant differences between the other various stages of diseased crabs (P＜0.01).The histopathological changes of hepatopancreas,gill,muscle and cardiac muscle were similar among six kinds of tissues or organs of diseased crabs in the four stages of disease.The main histopathological changes of hepatopancreas,gill,muscle and cardiac muscle were edema and atrophy in the light yellow stage.Edema and atrophy are reversible histopathological processes.Necrosis of hepatopancreas and muscle appeared in the light pink stage and was more serious in the later stages.Necrosis of gills and cardiac tissue appeared in the milky white stage and the grey stage.Necrosis is an irreversible histopathological process.Histopathological changes of nerve and intestinal tract were not obvious.According to the histopathological characteristics in the different stages,diseased crabs could recover only in the light yellow stage by eliminating the cause which will be determined in the future.Diseased crabs are impossible to recover due to the necrosis of major organs or tissues in the light pink stage and the later stages even the cause of disease is eliminated.Diseased crabs should be cleared away in time in order to reduce the economic losses of further breeding.关键词
中华绒螯蟹/水瘪子病/病理变化/组织病理变化Key words
Eriocheir sinensis/Shui-bie-zi disease/Pathology/Histopathology分类
农业科技引用本文复制引用
陆宏达,田全全,贾相相,张小俊,任芳芳..中华绒螯蟹水瘪子病不同发病阶段的病理变化特点[J].水生生物学报,2017,41(6):1242-1250,9.基金项目
上海市中华绒螯蟹产业技术体系建设项目(沪农科产字2017-4号) （沪农科产字2017-4号）
水产动物遗传育种上海市协同创新中心(ZF1206)资助[Supported by Shanghai Chinese Mitten Crab Industry Technology System Construction Project (Shanghai Agricultural Science Production 2017-4) （ZF1206）
Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding (ZF1206)] （ZF1206）
