Huge slugs settled in the center of Moscow: Pests from abroad


Huge slugs settled in the centre of Moscow: Pests from abroad. In the centre of Moscow, settled huge orange slugs pests. They have no natural enemies,

Huge slugs settled in the center of Moscow: Pests from abroad




In the centre of Moscow, settled huge orange slugs pests. They have no natural enemies, they quickly multiply and destroy plants.



The centre of Moscow was flooded with huge slugs, the newspaper Vesti.Ru reports. They were first noticed by tenants of houses on 3rd Tverskaya-Yamskaya Street.

Orange slugs more than 10 cm long can belong to the species Arion lusitanicus, said zoologist Ilya Gomiranov. Until the first half of the twentieth century, the Lusitanian slug lived on the Iberian Peninsula, then soon settled in Central and Northern Europe, probably thanks to an active trade.



Representatives of this species have practically no natural enemies, so they are actively breeding and are capable of producing catastrophic "raids" on the meadows of wild grasses, gardens and vegetable gardens.

  • Lusitanian slugs are hermaphrodites; in one clutch, one individual can produce up to one hundred eggs.


  • “He originally lived in Portugal and then all north, north settled in Europe. In recent years, it has already been celebrated in the south of Russia, ”says Gomyranov. - Perhaps landscaping was taking place, and together with the bushes, along with a rolled lawn, it was brought. In previous years, Arion lusitanicus was noticed in the gardens near Moscow, but for the first time, gastropods landed on Tverskaya. ”


  • However, it is possible that the sluggy was simply thrown onto the street by an unscrupulous breeder.


  • Also, slugs are similar to Arion Rufus, red roadside slugs. They grow to 18 cm in length (although mostly the size of an adult is about 10 cm) and is common in Western and Central Europe and North America. A red roadside slug also usually lives in gardens, fields, or forest areas near a person.

And this is not the first generation of slugs, experts say - among them come across very young, already born in Moscow.

According to local residents, slugs are so voracious that they can destroy a couple of bushes at the root in just a day. They have no natural enemies like rats and hedgehogs in the centre of Moscow, which contributes to their rapid reproduction.

As KP Candidate of Biological Sciences Boris Samoilov told the appearance of “alien” species in the ecosystem threatens with serious distortions. "Foreign" slugs can affect the existence of some species of birds, displacing the grey slugs that they feed on. Last year, the invasion of Spanish slugs collided in Ukraine - especially in the Kyiv region and in the western part of the country. Summer residents and gardeners collected their buckets. Some have lost their harvest.


Neither people nor pets are strictly not recommended to contact with slugs - there is a high risk to pick up parasites. One of the most dangerous is the bovine tapeworm, a tapeworm, the adult individual of which grows up to 10 m in length. The worm settles in the small intestine and, if not fought, can live up to 20 years in the human or animal body, producing up to 11 billion eggs during this time.

“A very important question is children. They will see a beautiful big orange worm and grab hold of it. The main thing is for them not to put these hands in their mouths, that is, they must wash their hands, ”warns Elmurod Rasulmukhamedov, head of the All-Russian Society for the Conservation of Nature. “We will most likely take the caught slugs to the university, see how infected they are.”

Obviously, soon, we should expect the appearance of slugs in neighbouring areas, experts say.

  • In the case of their discovery, it is better not to try to fight the invaders independently, but to report them to the city services.



  • And in the meantime, huge American cockroaches have arrived in Sochi. They can cause allergies in people, spoil food, carry infections and destroy buildings. Probably, insects could get to the Black Sea coast by accident with some kind of cargo. There are also cases of the escape of giant cockroaches from terrariums.



  • “At present, this insect is found throughout the world, inhabiting only buildings in cold latitudes and lives in buildings and in the natural environment in warm areas, such as Sochi, hiding in various wet dark shelters during the day, preferring to rotting wood ", - noted in the Sochi National Park.


  • Also, American cockroaches breed rather actively - females lay 15 to 90 Atkins in their lives, each of which holds from 14 to 16 eggs. At the peak of the reproductive period, a week after mating, two females form in the females.


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An unusual atmospheric phenomenon the British took a swarm of ants for the rain

In the south of Great Britain, a strange atmospheric phenomenon turned out to be a swarm of flying ants. Once a year they rise into the air to mate, then ant colts establish new colonies. Despite the eerie nature of this spectacle, mating years are useful for the ecosystem - ants become available food for birds, and the surviving womb well loosens the earth, founding nests.

In the south of the UK, the weather service recorded an unusual meteorological phenomenon, about the nature of which experts did not immediately guess.

"Recent observations from space show that our radar caught something on the southern coast that was not similar to precipitation," the organization said on Twitter.

Strange objects resembled clouds or clouds from which it rains, but closer observation showed that in reality, it is a swarm of ants.

The swarm is so dense that it can really be mistaken for a cloud when watching from a satellite.

“It's definitely not rain, because it looks much more creepy,” says weather forecast Simon King. “The rain looks completely different.”

Residents of the region, however, have already become accustomed to this phenomenon and do not consider it so terrible. They call the appearance of such swarms "the day of the flying ants." It is more correct to call it a season - “clouds” of ants appear between June and September, the peak of their flights lasts several days.

When the hot, wet weather slightly subsides, the black garden ants (Lasius niger) begin their mating years. Winged males and females massively rise into the sky. Females release pheromones, attracting males, and they fight for the attention of females. At the same time, both have to flee from birds of prey, which are very interested in such a gathering of food.

After the marriage rituals males die. The females return to the ground, get rid of the wings, and go in search of a place where they can found new colonies. A suitable place may be a stone or another object lying on the ground, an old stump, a hollow in the ground. The female can also dig a hole in the soft ground.

The female lays eggs for several days after mating. The larvae come out of the eggs after about a week (at a temperature of 25-28 ° C), after two weeks they pupate and after another two weeks, the first working ants appear from the cocoons.

The first workers are smaller than the subsequent ones due to the lack of food at the larva stage - besides the uterus, there is no one to provide it. The first larvae feed the uterus with stocks of their organism - salivary secretions.

If the female lives until next year, then again participates in the marriage summer.
In total, it can produce about 20 thousand eggs in 15 years. In total, the uterus can live up to 28 years.


  • Flying ants are taken in the UK for rain clouds, not for the first time - this has already happened in 2017. Entomologist Adam Hart from the University of Gloucestershire believes that this indicates the sensitivity of the technique used to observe the weather. However, some experts are concerned about the possible growth of ant colonies.

  • Even so, Hart notes, there is nothing wrong with that. Although the swarm of ants in the sky looks eerie, insects bring great benefits to the ecosystem. They not only serve as an important source of food for birds but also in the process of creating new colonies thoroughly dig up the soil, improving its quality.

  • Black garden ants are also common in Central Russia. The size of the queens may exceed the centimetre, the size of workers - 3-4.5 mm. Sometimes they can harm agriculture, in the mass of planting aphids and worms on the leaves, stems and roots of plants.

Uterus black garden ants often base the nest together.

If one of them dies, then the second one has to “bury” it.

Usually, working ants do the disposal of the bodies of the fallen brethren, but until they hatch, the queen takes up all the dirty work. She breaks the body of the deceased neighbour into parts and buries his remnants, or at least brings the corpse out of its cell with eggs.

Scientists estimate that burial seven times reduces the possibility of a surviving uterus becoming infected. At the same time, they, are not able to determine whether the second female is ill.

“Usually, the ant quiver is concentrated on the reproduction of offspring and does not get involved in dangerous activities, the researchers note. “Therefore, we were surprised to see that they not only did not avoid setting up colonies with diseased females but also independently get rid of their corpses.” We found out that such females have a lower risk of becoming infected from the deceased and dying less often than those who do not. ”

Huge slugs settled in the center of Moscow: Pests from abroad Huge slugs settled in the center of Moscow: Pests from abroad Reviewed by Write What's you know on August 01, 2019 Rating: 5

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