Vibrio is a gram-negative bacterium with many kinds. Common harmful vibrios are Vibrio parahaemolyticus, Vibrio harveyi, Vibrio cholerae, Vibrio alginolyticus, Vibrio brilliant, Vibrio anguillarum and so on. The so-called conditional pathogenic bacteria refers to shrimp diseases when the number of Vibrio reaches a certain level, the shrimp body is weak and the water environment deteriorates. The growth and reproduction ability of Vibrio is extremely strong. Therefore, it is difficult to cure prawns infected with Vibrio. Farmers should take measures to prevent Vibrio infection in advance in the process of breeding, and pay attention to improving the physique of prawns in the process, which can effectively reduce the probability of infection.

Characteristics of Vibrio 1: Vibrio can survive normally at 10-37 degrees Celsius. There are many species that breed fastest in water with high ph value of 6.5-9 and salinity, while there are relatively few species in fresh water, but they can also cause diseases.

Characteristics 2 of Vibrio: Because Vibrio is basically a heterotrophic bacterium, it needs the presence of organic matter in water to multiply in large quantities, which is why Vibrio proliferates in the middle and late stage of our culture. A large amount of residual bait and feces in water is the best paradise for Vibrio.

Characteristics of Vibrio 3:

Vibrio is facultative anaerobic, that is, it can multiply rapidly in the absence of oxygen and endanger water bodies. Sufficient oxygen still has a certain inhibitory effect on Vibrio. The key is that sufficient oxygen can improve the immunity of shrimp, thus resisting Vibrio to some extent.

It should be emphasized that Vibrio can not be completely extinct and can only be controlled within a certain range. Moreover, the prevention and control measures of different farming modes are also very different. For conventional ponds, the general treatment method (suggested) is external disinfectant+oral phage.

The prevention and treatment of vibriosis mainly starts from three aspects: sediment, water quality and physique, which requires the majority of farmers to do daily management, strengthen the concept of "prevention first, combining prevention and treatment", find and treat early, use excellent products when necessary, and sum up experience in time, so as to achieve twice the result with half the effort.