Which animal can live in a pond. dream interpretation

Ponds play a significant role among reservoirs. They are created artificially, and usually their area does not exceed one square kilometer. Their purpose is water supply or irrigation, and water can be stored in them for sanitary, fire fighting or sports purposes. In addition, such reservoirs are organized for breeding fish and waterfowl. But besides these animals, there are many who live in the pond.

Fish and birds

An artificially created reservoir needs a deliberate settling of fish in it. At the same time, you need to choose their types that will feel good in the condition of stagnant water. First of all, these include carp. They are perfect for the role. commercial fish and pond facilities. Their appearance is varied. Carp vary in color and weight, can reach 40-50 cm in length. Small representatives are also found, they are often used as live bait when catching pike.

Carp are very tenacious and endure even a harsh climate with complete freezing of reservoirs in winter. At this time, they hibernate. In the spring of the 3rd-4th year of life, the fish spawn. Vegetation, detritus, or small organisms are excellent food for them.

In addition to the common crucian, artificially bred goldfish can be brought into the pond.

And also in artificial reservoirs with banks overgrown with reeds, reeds and sedges, tench feels good. It is unpretentious to water quality, and its significant population is easy to grow in warm water. pond farming. Individuals will lead a solitary sedentary image life and spend a lot of time at the bottom, extracting invertebrates from the silt there, as well as eating plants and detritus.

In addition to fish, the pond can be chosen by the wild mallard duck, from which most modern domestic breeds originated. Easily recognizable are the males of this bird, which have a green head and neck. The females are less remarkable, as they are almost completely brown in color. Non-freezing artificial reservoirs major cities mallards are often chosen for wintering. There they feed on plants and small animals. They dive rarely and only if they are in danger.

What can not be said about another representative of the duck family, the common goldeneye. These birds with contrasting black and white plumage can dive to a depth of 4-10 meters, which they do. most time, while extracting food - mollusks, larvae, plants.

Tadpoles swim in the pond. When they grow up, they will have paws. It will take quite a bit of time, and they will become beautiful green frogs.

Beetle - swimmer

These black, yellow-striped insects, similar to May beetles, are called swimming beetles. These are predators that ambush other inhabitants of the pond, attack them and eat them greedily. Equally gluttonous are their larvae hiding in the silt.

Very cute creatures live in the ponds. These are tritons. They are very useful because they eat mosquito larvae and other insects. The back of male newts is decorated with a large crest.

The black water bug is a small water beetle that swims belly up and can stay underwater for a long time. It moves by touching the surface of the water with its antennae, along which the air it needs “flows”.

Attention! Ponds are often inhabited by water snakes. They can reach 1.5 meters in length. Don't be afraid of them, they are not poisonous. Although, at the sight of a person, snakes take a threatening pose, hiss or pretend to be dead. These snakes feed on small fish, insects and frogs.

These small greenish creatures, which seem to be suspended on the "ceiling" of the reservoir, are mosquito larvae. They breathe with the help of a special tube protruding outside.

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The surface of the pond is an elastic film that serves as a habitat for many plants and animals. Water lilies use the surface tension of water to keep their large leaves afloat (air cavities in the leaves also help).

Duckweed, the world's smallest flowering plant, also floats due to surface tension. Water striders and whirling beetles, whose bodies and legs are not wetted by water, glide along the surface of the pond. Pond snails slowly crawl along the underside of the surface film. Plants make up their own miniature world, inhabited by various larvae, planarians, hydras, etc.

But most of the inhabitants of the pond cannot be seen with the naked eye - for example, unicellular protozoa and funny rotifers, at the head end of which there is a “wheel” - a disk surrounded by a corolla of large, quickly swaying cilia, with the help of which these animals move and get food. At the bottom of the pond, dragonfly larvae (naiads) are waiting for prey, looking for something to profit from, snails and crayfish that feed on organic remains.

beavers

No other wild animal has such a significant impact on environment like beavers. The large dams they are building could flood hundreds of hectares of land. In the wetlands, trees are dying, the burrows of mice, shrews and many other animals are being destroyed. But nature quickly adapts. Ponds created by beavers are usually full of fish. Here they nest or find food. waterfowl, as well as herons, kingfishers and other birds.

One of the most remarkable architects in the animal world, beavers build dams and huts on small rivers from branches, sticks and clay. Thanks to the dam, a pond is formed, on which beavers build their huts with a diameter of up to 2 m or more, towering 1-1.5 m above the water. In Eurasia, beavers live both in huts and in burrows dug in steep banks.

A pile of branches and sticks, of which the hut is built, is sealed with mud. The branches piled on top are not smeared, which provides ventilation. The entrances to the beaver houses are located under water. In winter, animals feed on branches that are flooded next to the hut.

How do insects hunt underwater?

Dragonfly larvae are nothing like the beautiful adults you often see flying over water. First of all, the larvae do not have wings and live in the water, they do not fly, but swim using a kind of water jet engine. If adult dragonflies catch prey in the air, capturing the victim with their legs folded like a basket, then the larva has a weapon - a huge lower lip thrown forward - the so-called mask. Noticing potential prey, the larva pushes the mask forward and, holding the prey with hooks located on the mask, injects into it an enzyme that dissolves tissues, after which it pulls the prey to the chewing jaws.

Elongated, stick-like bugs or water scorpions crawl over aquatic plants. Although these insects can bite if touched, they grab prey not with their jaws, but with their feet. When approached by other insects or a small fish, the water scorpion quickly closes its long legs, similar to braids, and the victim is trapped.

smooth beetles

Aquatic insects are diverse not only in appearance but also in terms of transportation. Twirl beetles describe circles on the water, and water striders glide along the surface, as if on skates. Water beetles smooths and rowers row with long legs covered with hairs. On the surface of the water, smooths float upside down.

Amazing swimming device Chemical substance produced by some terrestrial beetles. This substance destroys the surface tension of water at one end of the insect's body, as a result of which the surface tension remaining at the other end of the beetle's body pushes it and it floats on the water.

Daphnia

Tiny transparent daphnia, or water fleas, are not insects, but crustaceans, but their movement in the water really resembles the jumping of fleas. With external inconspicuousness, these creatures are quite interesting. So, daphnia breed without the participation of males. Females develop from their unfertilized eggs, and only under certain unfavorable conditions, for example, with a lack of food, males develop from some eggs.

The color of daphnia varies depending on the content in surrounding water oxygen. If there is little oxygen, their blood becomes dark red, as the hemoglobin content in it rises, and at the same time, transparent daphnia turns red; when there is oxygen saturation, the blood and, accordingly, the color of daphnia turn pale. Water fleas also react to temperature changes. In summer, they grow long, feathery bristles, which increase their surface area and help them stay afloat. In winter, when the water is colder and its density is higher, it easily supports the rounded compact body of Daphnia.

How leeches suck blood

Many species of leeches - worms that live in ponds and reservoirs - feed on the blood of turtles and fish. Bloodsucking medicinal leech(in the past it was used in the treatment of certain diseases) is attached to the victim with a posterior sucker, and with its head end, armed with teeth, makes a wound through which it sucks blood. Her salivary glands produce a special substance that prevents blood clotting. In the digestive tract of the leech there are sinuses in which it stores blood, so the leech, having sucked once, can feed on it for several months.