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Brown tree snake

Boiga irregularis

O mene: Its genus, Boiga, is a group of about twenty-five snakes called 'cat-eyed' snakes because they have vertical pupils.1

Len to bolíBolí to, ale vážne ti to neublíži.

Hady so zadnými jedovými zubami

UhryznutiaJe: Mäso

Nebezpečenstvo pre ľudí: BolestivéMôže to poriadne bolieť, ale skoro nikdy to nie je vážne.

The brown tree snake is a slender, night-active snake that climbs well and hunts in trees and on the ground. It lives in coastal northern and eastern Australia, eastern Indonesia, Papua New Guinea and nearby islands. It is famous for harming wildlife on the island of Guam, where it was introduced by accident.1

Žije v

Coastal eastern and northern Australia, eastern Indonesia, Papua New Guinea and islands of northwestern Melanesia. Introduced to Guam.1

Ázia, Austrália a Oceánia

Domov

It lives in forests, grasslands and sparsely forested areas, and is common in places disturbed by people. It hides during the day in palm crowns, hollow logs, rock crevices, caves and the dark corners of thatched houses near the roof. In Darwin, Australia, it is most often met in suburban areas during the wet season from January to March.1

Dĺžka

1 m až 2 m (3,3 ft až 6,6 ft)1

Maximálna rýchlosť

asi 6 km/h (3,7 mph)

Na súši, hrubý odhad

Čo je?

It eats birds, lizards, bats, mice, other small rodents and frogs, as well as many invertebrates and their eggs. It hunts using both sight and chemical cues. Often it wraps its body around its prey like a constrictor to hold it still while it eats.1

Fotka: Brown tree snake — Brown tree snake. Foto: Pavel Kirillov from St.Petersburg, Russia. CC BY-SA 2.0, Wikimedia Commons.

Ako ho spoznať

Slender body, with a large head compared to its body1
Usually brown, but can be yellowish, green or beige1
Some individuals have red, saddle-shaped blotches1
Vertical pupils, like a cat's eyes1
Active at night, and usually found in trees1

Sila jedu

Uhryznutia

Jed vychádza cez jedové zuby, keď hryzie.

Čo robí jeho jed?

It has two small, grooved fangs at the back of the mouth, so venom flows into the bite slowly rather than being injected in one go. The venom is weakly neurotoxic, meaning it affects the nerves, and may also damage cells locally. Its effects are trivial for adults, and it is mainly used to subdue lizards.1

Aké nebezpečné je pre ľudí?

Nebezpečenstvo pre ľudí: BolestivéMôže to poriadne bolieť, ale skoro nikdy to nie je vážne.

The snake is considered aggressive when threatened but not dangerous to adult humans. Serious medical consequences have been limited to children, who are more affected because of their low body mass. On Guam, it has caused widespread power outages, pet losses and emotional distress to residents.1

Čo robí, keď sa bojí?

When threatened it is highly aggressive, lunging and striking at the attacker repeatedly.1

Ak uhryzne

Umy miesto uhryznutia, drž postihnutého v pokoji a vyhľadaj lekársku pomoc. Niektoré druhy (napríklad boomslang) môžu byť smrteľne nebezpečné aj o niekoľko hodín neskôr.

Vždy najprv zavolaj na tiesňovú linku (112, 000, 911). Toto sú všeobecné rady prvej pomoci, nie lekárska rada. Základy prvej pomoci

Buď v bezpečí

Nikdy sa nedotýkaj divého zvieraťa, nechytaj ho ani ho nedráždi, aj keď je malé a aj keď vyzerá, že spí alebo je mŕtve.
Nechaj mu priestor. Ak nejaké stretneš, zostaň pokojný, pomaly cúvni a nechaj ho ísť svojou cestou.
Ak ťa uhryzne: zostaň pokojný, nehýb sa, zavolaj na tiesňovú linku (112, 000, 911) alebo sa rýchlo dostaň do nemocnice. Zapamätaj si, ako vyzeralo, fotka pomôže.

Nejde po tebe. Jed používa na chytanie potravy alebo na obranu a oveľa radšej sa schová. Viac o tom, ako zostať v bezpečí

Kde na svete?

Afrika Ázia Európa Severná Amerika Južná Amerika Austrália a Oceánia

Aké je veľké?

Aké je dlhé?

dlhé ako 4 domácich mačiek od nosa po chvostdlhé ako 11 banánov za sebouby prebehlo 100 metrov za 60 sekúnd (najrýchlejší človek potrebuje 9,6)

Aký veľký je Brown tree snake v porovnaní s TEBOU?

Iba matematika v tvojom prehliadači. Nič sa neukladá ani nikam neposiela.

Aké je rýchle?

Kráčajúci človek asi 5 km/h (3,1 mph)

Brown tree snake asi 6 km/h (3,7 mph)

Dieťa na bicykli asi 12 km/h (7,5 mph)

dobré vedieť

Fakty

Snakes on Guam have been seen moving up large smooth cylinders using a method called 'lasso locomotion', which had not been recorded in snakes before. It is tiring, so they move slowly and stop often.1

On Guam, where prey is plentiful and there are few predators, the snakes have grown to 3 m, much longer than their typical 1 to 2 m in their native range.1

Shortly after World War II, the snake reached Guam by accident, probably as a stowaway in ship cargo or in aircraft landing gear. Its numbers then grew to unprecedented levels.1

Trained dogs are used on Guam to find and remove snakes before cargo and transport vessels leave the island.1

Female brown tree snakes have been seen performing courtship behaviours normally used by males, such as tongue-flicking and head-jerking.1

Brown tree snakes can survive for long periods without food.1

Lovec mýtov

Mýtus: The brown tree snake is a deadly snake that is dangerous to adults.

Pravda: It is not considered dangerous to adult humans. Its venom is weak and serious effects have mainly been seen in young children.1

Pre znalcov jedov

Vedecký názov: Boiga irregularis
Skupina: Hady so zadnými jedovými zubami
Rodina: Colubridae2
Rad: Squamata
Kontinenty: Ázia, Austrália a Oceánia
Mláďatá: The female lays 4 to 12 oblong eggs with leathery shells and may lay up to two clutches a year. The eggs hatch about 90 days later.1
Nebezpečenstvo pre ľudí: 2 / 5: Bolestivé3

Odkiaľ sú fakty

Brown tree snake (Wikipedia (CC BY-SA 4.0))
Boiga irregularis (iNaturalist): mená a klasifikácia.
Venom Wiki: úroveň nebezpečenstva, typická veľkosť a odhad rýchlosti sú naše vlastné. Pozri, ako ich určujeme: Ako hodnotíme nebezpečenstvo.

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