Nature s nemesis of planarians

Planarian natural predators in nature include, but are not limited to, the following:

1.Guppies: Guppies are a fish that are very fond of eating parasites, and planarians are a type of parasite. Therefore, if several guppies are placed in a tank and not fed, the planarian population will be significantly reduced, as guppies will seek out and eat planarians.

2.Fish: In addition to guppies, some other fish can also act as natural enemies of planarians. For example, large and small fish, including some that specialize in feeding on small aquatic organisms, such as dragon lice, crustaceans, tadpoles, larvae of aquatic insects, etc.

3.Amphibians and reptiles: Some amphibians and reptiles, such as frogs, lizards, etc., can also act as natural enemies of planarians.

4.Birds and primates: Birds and primates, such as monkeys, birds, etc., also prey on planarians.

5.Bacteria, fungi, single-celled eukaryotes, and viruses: In recent years, some bacteria, fungi, single-celled eukaryotes, and viruses have been found to infect planarians, and some can even cause death in planarians.

In general, planarians have abundant natural enemies in nature, including different species of fish, amphibians, reptiles, birds and primates, and microorganisms. These predators have a significant impact on planarian populations through predation, competition and infection.

The natural predator of planarians is guppies.

Guppies are very fond of eating parasites.

It is not difficult for us to find that if a few guppies are placed in the fish tank and not fed first, then we will find that there are a lot fewer planarians, and only some hidden planarians can not be found by guppies.

1. Planarian body is flattened, slightly convex back, gray-brown; The anterior end of the body is triangular, the two sides are slightly protruding called the auricular process, and there is a pair of black eyespots on the back of the anterior end and the inner side of the auricular process; The posterior end of the body is slightly pointed. The body of the insect was turned up on the ventral surface with a dissecting needle, and it was seen that the ventral surface was flattened, lighter in color, densely ciliated, and there were mouths in 1 3 places after the ventral surface near the body.

2. Living habits: Planarians mostly live in clean oxygen-rich seawater or fresh water. Those who live in the shallow waters of streams are mostly hidden under rocks, and they lie dormant by day and night.

The body is soft, the head has eyespots and ear processes, the body is leaf-shaped, dorsoventrally flattened, and the ventral surface is densely ciliated, and it can crawl. The whole is light brown, more than 10 mm long. The head is triangular in shape, with a pair of black eyespots on the dorsal side and an ear process on each side, which is the olfactory organ.

The end of the body is blunt-pointed.