0707. zenbakia, guztira 1 402

Fen raft spider

Dolomedes plantarius

KaltegabeaKaltegabea pertsonentzat. Ez dago kezkatzeko ezer.

KoskaJaten du: Haragia

Arriskua pertsonentzat: ArinaErle-ziztada bat bezala edo gutxiago. Ia kaltegabea pertsonentzat.

The fen raft spider is a large spider that lives on the edges of still, slow-moving water in Europe. It hunts from plants at the water's edge and can even run across the surface of a pond. It is rare, and it is protected in many places.1

Non bizi den

Throughout Europe and Russia, including the UK, Scandinavia, France and Germany1

Europa

Hasiera

It lives in lowland fens and grazing marshes, usually on the edges of pools or ditches. It needs standing or slow-moving water that is neutral to alkaline, and it avoids places where the water is shaded. Tall plants that stick out of the water are important for perching, basking and building nursery webs.1

Luzera

7 cm (2,8 in)1

Abiadura handiena

1,3 km/h inguru (0,81 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

It hunts from perches at the water's edge. It feeds mainly on water insects such as pond skaters and dragonfly larvae, smaller water spiders and small fish. It also takes drowning land insects and small animals such as sticklebacks and tadpoles.1

Argazkia: Fen raft spider — Fen raft spider. Argazkia: Thomas Gyselinck. CC BY 4.0, iNaturalist.

Nola ezagutu

It is a large spider within its range. Adult females have bodies slightly over 2 cm long and a leg span of about 7 cm.1
It is usually black or brown, with white or cream stripes along the sides of the body.1
It is often found sitting on plant stems at the water's edge, with its back legs on a stem and its front legs on the water.1

Askotan honekin nahasten da: It is very similar in appearance to the closely related raft spider, Dolomedes fimbriatus, and the two are often misidentified. Identification can be difficult.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: ArinaErle-ziztada bat bezala edo gutxiago. Ia kaltegabea pertsonentzat.

Kosk egiten badu

Garbitu koska eta jarri izotz-poltsa bat gainean minerako. Lortu mediku-laguntza mina handia bada, zabaltzen bada edo pertsona gaizki sentitzen bada.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Batek kosk egiten badizu: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania

Zein handia da?

Zein luzea da?

2 eraikuntza-bloke ilaran jarrita bezain luzea100 metro 280 segundotan egin litzake (gizakirik azkarrenak 9,6 behar ditu)

Zein handia da Fen raft spider ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Dortoka bat 0,3 km/h inguru (0,19 mph)

Fen raft spider 1,3 km/h inguru (0,81 mph)

Oinez doan pertsona bat 5 km/h inguru (3,1 mph)

jakin beharrekoa

Datuak

It can run across the surface of water by using surface tension, the force that keeps the water's skin intact.1

It can also hunt underwater by running down plant stems, and it can use this route to escape predators.1

It detects prey using sensory hairs on its legs, which pick up the vibrations made when prey hits the water.1

Before hatching, the female builds a tent-like nursery web on plants above the water, where she guards the young.1

In 2010, around 1,600 hand-reared spiderlings were released at a new UK site, which were fed on fruit flies.1

Males mate early in the season and most die by late July. Females survive until the end of summer.1

Pozoi-adituentzat

Izen zientifikoa: Dolomedes plantarius
Taldea: Armiarmak
Familia: Dolomedidae2
Ordena: Araneae
Kontinenteak: Europa
Kumeak: The female lays several hundred eggs in a silk sac about 10 mm across, which she carries under her body for around three weeks.1
Bizi-iraupena: 2,5 urte inguru1
Nola dagoen naturan: Vulnerable (IUCN Red List). In the UK it is Nationally Rare and protected by law.1
Arriskua pertsonentzat: 1 / 5: Arina3

Datuak nondik datozen

Great raft spider (Wikipedia (CC BY-SA 4.0))
Dolomedes plantarius (iNaturalist): izenak eta sailkapena.
Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

Orrialde honetako datu bakoitzak zenbaki bat du, bere iturrira eramaten zaituena. Zerbait gaizki badugu, barkatu, animalien zaleak gara, ez zientzia-aldizkari bat. Esaiguzu [email protected] helbidean eta konponduko dugu.

Eskorpioia gose da! Venom Wiki pertsona bakar baten proiektua da: doakoa, iragarkirik eta jarraitzailerik gabe. Eskupeko txiki batek sarean mantentzen laguntzen du.Elikatu eskorpioia