In recent years, various kinds of fulminant diseases of aquaculture plants and animals have occurred from time to time, and the harms caused by various diseases have become increasingly serious. The direct economic losses caused by diseases and diseases in aquaculture plants are at least several hundred billion yuan each year.
The main diseases that cause serious damage to farmed fish include grass carp hemorrhagic disease, herpes virus disease, haemorrhagic viremia, infectious spleen and kidney necrosis, infectious hematopoietic organ necrosis, and iridescent virus disease; freshwater fish bacterial Septicemia, streptococcal disease, Edwards disease, gill disease, erythroderma, print disease, hydromycosis and other bacteria and fungal diseases; stimulation of secretive cryptosides, echinococcosis, ringworm disease, third generation parasitic diseases, and other parasitic diseases Insect disease and so on.
The main diseases that cause serious damage to crustaceans include shrimp disease mainly white spot syndrome, acute midgut gland necrosis syndrome, red leg disease, gill gill disease, enteritis disease, red body disease, white tail disease of Macrobrachium rosenbergii, Fixing ciliate diseases, etc.; The main diseases of crabs are Chinese mitten crab trembling disease, black shank disease, enteritis disease, and fixed ciliate disease.
In addition, the sudden drop in seawater salinity caused by heavy rain caused a large number of deaths in pond cultured sea cucumbers, causing huge economic losses to the sea cucumber aquaculture industry. Because of various diseases, Chinese sturgeon has also caused relatively serious losses to local farmers.
Farmed fish
Grass carp hemorrhagic disease, herpes virus disease and haemorrhoid viremia and other diseases will still appear in some areas, and some areas may have fulminant onset. The estimated incidence rate is 20% to 30% and the mortality rate is 10% to 15%. Among the aquaculture species such as cockroach, clam, tilapia and stingray, iridium virus disease, streptococcal disease and Edwards disease will occur severely, and the incidence is expected to exceed 20%. The disease is mainly in Guangdong, Fujian, Guangxi, Jiangsu and other places. In the epidemic, the mortality rate may reach more than 15%. Large yellow croaker, grouper, gingiva, turbot will stimulate cryptosporidosis, streptococcal disease, neural necrosis, and shield ciliate disease. Among them, the cryptosporidiosis caused by large yellow croaker is more severe than that of other species. Nerve necrosis and streptococcal disease damage grouper and tilapia, respectively; shield ciliate disease mainly damages gums and turbot. Stimulation of secretive worm disease in 2014 will be concentrated in Guangdong, Fujian, Zhejiang and other provinces; neuronecrosis, streptococcal disease will be concentrated in Guangdong, Hainan, Fujian and other provinces; shield ciliate disease mainly in Shandong, Hebei and other places. Except for secretive nuclear worm disease, the degree of harm of other diseases will be basically the same as or slightly higher than 2013.
Crustacean culture
White spot syndrome, acute midgut gland necrosis syndrome, red leg disease, gill disease, enteritis disease, red body disease, white tail disease of Macrobrachium rosenbergii, and fixed ciliate disease will be the most important crustacean diseases. The incidence of acute midgut gland necrosis syndrome may reach more than 30%, the incidence of white spot syndrome is about 25%, and the risk of white tail disease of Macrobrachium rosenbergii will be more severe than 2013, mainly in Hainan, Guangdong, Zhejiang, and Jiangsu. , Guangxi and other regions are popular. Diseases of S. serrata cultured in Fujian, Zhejiang, and other provinces and cities are still serious, the incidence rate is about 20%, and the incidence of swimming crabs in Shandong and Jiangsu has increased.
reptiles
The disease of Chinese sturgeon is still serious, and it is endemic in Zhejiang, Jiangxi, and Jiangsu; turtle disease will mainly occur in Hubei Province and other places; frogs are mainly caused by bacterial diseases, mainly in breeding areas such as Hunan, Guangdong, Anhui, Sichuan, and Fujian. occur. The degree of disease damage and morbidity will be basically the same as in 2013.
other
Stichopus japonicus will suffer from skin ulcer syndrome and other diseases, and the degree of harm will be the same as in 2013. The incidence rate from April to May is about 4%, which mainly occurs in Shandong and Liaoning.
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