There are many parasites in aquaculture, large enough to be directly observed with the naked eye, and small must be seen with the help of some other tools such as microscopes, endangering the health of aquaculture animals and having a great impact on the income of aquaculture. Let's talk about the parasite that can be directly observed with the naked eye- the anchorhead loach
In the past few days, WeChat friends have sent some pictures to xiaobian, I think this worm everyone will understand at a glance, anchor head loach.
Anchorhead bream removed from fish
In aquaculture, anchorhead disease is particularly prominent in fish. Anchorhead loach is harmful to freshwater fish of all ages, and there is an epidemic of this disease throughout the country, especially to fish species. When there are 4-5 anchorhead loach parasitism, it can cause fish species to die, and fish over 2 years old generally do not cause death (except for eel oral parasitism), but affect the growth, reproduction and commodity value of fish, and are prone to secondary bacterial infection in fish.
The reproduction rate of the bream is amazing, one day and night can lay hundreds of thousands of eggs, the eggs released by the anchorhead bream hatch into arthropods, after 5 molts into copepod larvae, the copepod larvae molt 4 times, it takes 3-4 days, when the anchorhead bream in the fifth radial larvae, reach sexual maturity, after mating on the fish body, the female mackerel finds a suitable host and begins to parasitize. At the most suitable temperature now, the eggs produced, as long as 5-7 days later the female anchorhead loach will parasitize the fish body, if there is a female loach in the water body, after 7 days, the water body can develop into hundreds of anchorhead loach. Based on this year's temperature, it is now the high incidence of anchorhead disease in many places.
So many anchor-headed loaches, and each anchor-headed loach has two oocysts, each of which carries dozens to hundreds of eggs, and these egg sacs are laying eggs twenty-four hours a day, which makes it difficult to kill the anchor-headed loach. For so many anchorheads in the picture that plague breeding friends, how can we completely solve the problem of this parasite?
Prevention and treatment of anchorhead loach disease
When encountering anchorhead loach, we are generally accustomed to using avermectin, ivermectin, cypermethrin, octylthion, dimethoate and other insecticides in aquaculture. However, because of the frequent and large-dose use of insecticides, parasites have developed serious drug resistance, and now many traditional drugs have been unable to solve the problem, 2 or even 3 times in a row, after killing parasites, they cannot be managed for half a month and rebound. This is not only costly, frequent drug application workload, but also serious delays in production and damage to water quality, so what should we do?
Chinese medicine insect repellent products must be the main force in the future, by poplar flowers, dried ginger, wumei, pumpkin seeds, junzi and other traditional Chinese medicine extracted, for wheel worms, small melon worms, anchor head fleas, sporangia, etc. have a very good effect, there have been parasites of fish continuous use for 5-7 days can completely kill the parasites clean, and there are no side effects. Unlike traditional chemicals, the liver damage to fish is very large, and if you are not careful, you will cause a large number of deaths! It will not cause any damage to the water quality, and there is no need to detoxify after killing the parasites, nor does it need to replenish bacteria and algae, which greatly reduces the cost of insecticidalization! Regular prevention is more worry-free!
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