Biological control method for ciliate disease
The present disclosure provides a biological control method for ciliate disease, and belongs to the technical field of biological control. The biological control method includes the following step: adding Chaenea vorax into an aquaculture pond to control the ciliate disease; and the Chaenea vorax includes Chaenea vorax PJ13002. According to the present disclosure, the Chaenea vorax PJ13002, a predatory protozoan, is introduced to recover a microbial food chain existing in nature in an aquaculture system and achieve biological control of the ciliate disease. Meanwhile, the Chaenea vorax PJ13002 can be directly ingested by aquaculture animals without causing diseases, so that a more stable aquaculture system can be formed, losses are avoided, costs are reduced, and economic benefits are increased. The method provides a new thought for controlling the ciliate disease and has an excellent popularization and application prospect.
1 . A biological control method for ciliate disease, comprising adding Chaenea vorax to an aquaculture pond to control the ciliate disease, wherein the Chaenea vorax is Chaenea vorax PJ13002 with the deposit number CGMCC NO: 46992.
2 . The biological control method according to claim 1 , wherein the Chaenea vorax PJ13002 is available from an intertidal zone of Qingdao.
3 . The biological control method according to claim 1 , wherein the aquaculture pond is maintained at a temperature of 10-20° C., a salinity of 25-35%, and pH 6-9.
4 . The biological control method according to claim 1 , wherein based on a 30 mu aquaculture pond, the adding Chaenea vorax to an aquaculture pond specifically comprises:
if a density of ciliates is 0-5 individuals/mL, adding 4,000-6,000 Chaenea vorax to the aquaculture pond;
if the density of ciliates is 6-50 individuals/mL, adding 8,000-12,000 Chaenea vorax to the aquaculture pond;
if the density of ciliates is 51-200 individuals/mL, adding 25,000-35,000 Chaenea vorax to the aquaculture pond;
if the density of ciliates exceeds 200 individuals/mL, adding 95,000-110,000 Chaenea vorax to the aquaculture pond.
5 . The biological control method according to claim 1 , wherein the ciliates comprise scuticociliates.
6 . The biological control method according to claim 5 , wherein the scuticociliates comprise Uronema marinum.
7 . The biological control method according to claim 6 , wherein the Uronema marinum is Uronema marinum PJ20101A with the deposit number CGMCC NO: 46993.
8 . The biological control method according to claim 6 , wherein the Uronema marinum PJ20101A is available from an intertidal zone of Qingdao.
9 . The biological control method according to claim 1 , wherein animals cultivated in the aquaculture pond comprise Scophthalmus maximus, Paralichthys olivaceus, prawns, and flounders.