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Red imported fire ant

Solenopsis invicta
Om navnet: Its species name, invicta, is Latin for "invincible" or "unconquered". It is called the fire ant because its sting causes a burning sensation.1
Gør bare ondtDet gør ondt, men det skader dig ikke alvorligt.
Myrer StikSpiser: Lidt af det hele
Fare for mennesker: SmertefuldDet kan gøre rigtig ondt, men det er næsten aldrig alvorligt.

The red imported fire ant is an ant that comes from South America. It has spread to Australia, New Zealand, parts of Asia, the Caribbean, Europe and the United States, where it is seen as a serious pest. Its sting burns, and in some people it causes a dangerous allergic reaction.1

Lever i
Native to South America. Introduced to Australia, New Zealand, several Asian and Caribbean countries, Europe and the United States.1
Sydamerika
Forside
It lives in a wide variety of places, including rainforests, deserts, grasslands and disturbed land. It is dominant in altered areas and thrives in urban areas, where it nests alongside roads, buildings and in electrical equipment. Colonies build large soil mounds that have no visible entrances.1
Længde
5 mm (0,2 in)3
typisk størrelse for et voksent dyr
Tophastighed
cirka 0,11 km/t (0,07 mph)
På land, groft gæt
Hvad spiser det?
It eats dead mammals, arthropods, insects, seeds and sweet substances such as honeydew from hemipteran insects, with which it has developed relationships. It forages on warm or hot days, though it may stay outside at night.1
Helt ærligt!Foto af Red imported fire ant
Red imported fire ant. Foto: Judy Gallagher. CC BY 4.0, iNaturalist.

Sådan genkender du det

  • Workers are red and somewhat yellowish, with a brown or black rear section (gaster).1
  • Males are completely black.1
  • Workers come in different shapes and sizes.1
  • Colonies form large soil mounds with no visible entrances, because foraging tunnels lead to places far from the nest.1

Giftkraft

Stik

Giften kommer ud gennem en brod.

Hvad gør dets gift, når det bider eller stikker?

About 95% of its venom is made of water-insoluble piperidine alkaloids called solenopsins, and the rest is a mixture of toxic proteins that can be especially strong in sensitive people. Most stings cause intense burning and swelling, followed by sterile pustules (small fluid-filled bumps) that can last several days. In some people, a severe allergic reaction called anaphylaxis can occur, with dizziness, chest pain, nausea, severe sweating, low blood pressure, shortness of breath and slurred speech.1

Hvor farligt er det for mennesker?

Fare for mennesker: SmertefuldDet kan gøre rigtig ondt, men det er næsten aldrig alvorligt.

More than 14 million people are stung by these ants each year in the United States, and many are expected to develop allergies to the venom. Between 0.6% and 6.0% of people may suffer anaphylaxis, which can be fatal if left untreated. More than 80 deaths have been recorded from attacks by this ant.1

Gode nyheder: Lægerne har en medicin (modgift) eller en behandling mod det.1

Hvad gør det, når det er bange?

It uses its venom and chemical signals (pheromones) to defend itself and its nest.1

Hvis det stikker

  • People who only have pain and pustules need no medical attention. People who develop anaphylaxis need emergency treatment with adrenaline. Whole body extract immunotherapy is used to treat people who are allergic and is regarded as highly effective.1
  • Vask og køl stikkene.
  • Hvis personen har svært ved at trække vejret, hævelse i ansigtet eller halsen eller er ved at besvime, er det en allergisk nødsituation: Ring til dit alarmnummer.

Ring altid først til dit alarmnummer (112, 000, 911). Dette er generel førstehjælpsvejledning, ikke lægelig rådgivning. Grundlæggende førstehjælp

Pas på dig selv

  • Rør aldrig ved, fang eller dril et vildt dyr, heller ikke et lille et, og heller ikke hvis det ser ud til at sove eller være dødt.
  • Giv det plads. Hvis du møder et, så bliv rolig, træd langsomt tilbage, og lad det gå sin egen vej.
  • Hvis et stikker dig: Bevar roen, hold dig i ro, ring til dit alarmnummer (112, 000, 911), eller kom hurtigt på hospitalet. Husk, hvordan det så ud, et billede hjælper.

Det er ikke ude efter dig. Det bruger sin gift til at fange føde eller beskytte sig selv, og det gemmer sig meget hellere. Mere om sikkerhed

Hvor i verden?

AfrikaAsienEuropaNordamerikaSydamerikaAustralien & Oceanien

Hvor stort er det?

Hvor langt er det?

Red imported fire ant cirka 5 mm lang (0,2 in)Et riskorn cirka 7 mm (0,3 in)En 1-euromønt cirka 2,3 cm (0,9 in)
lille nok til at sidde på din fingernegl

Hvor stor er Red imported fire ant i forhold til DIG?

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Hvor hurtigt er det?

værd at vide

Fakta

1

When water levels rise, these ants build rafts to float on.1

2

A single mature colony can contain between 500,000 and 2,000,000 individuals.1

3

Over 1,800 scientific papers have been published using its name, and it is one of the most studied insects on the planet, rivalling the western honey bee.1

4

Workers dispose of scraps and dead ants on refuse piles outside the nest, a behaviour called necrophoric behaviour.1

5

Workers can live for several months, while queens can live for years.1

Myteknuser

Myte: The name "fire ant" comes from fire or burning nests.

Sandhed: The name comes from the burning sensation caused by its sting.1

For gifteksperter

Videnskabeligt navn
Solenopsis invicta
Gruppe
Myrer
Familie
Formicidae2
Orden
Hymenoptera
Kontinenter
Sydamerika
Unger
Winged males and queens mate during a nuptial flight in the warm seasons. A colony can be started by a single queen or by a group of queens, which later compete for dominance once the first workers emerge.1
Fare for mennesker
2 / 5: Smertefuld3

Hvor fakta kommer fra

  1. Red imported fire ant (Wikipedia (CC BY-SA 4.0))
  2. Solenopsis invicta (iNaturalist): navne og klassifikation.
  3. Venom Wiki: fareniveauet, den typiske størrelse og hastighedsgættet er vores egne. Se, hvordan vi regner dem ud: Sådan vurderer vi faren.

Hvert faktum på denne side har et nummer, der peger på kilden. Hvis vi har taget fejl, så undskyld, vi er dyrefans, ikke et videnskabeligt tidsskrift. Skriv til os på [email protected], så retter vi det.

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