Venom Wiki / Alle diere / See-egels, seesterre & wurms

Nr. 1271 van 1 402

Savigny's long-spined urchin

Diadema savignyi

Oor die naam: The species name honours Marie Jules César Savigny, a French zoologist who described many new marine species from the Mediterranean and Red Sea.1

Maak net seerMoenie aanraak nieDit maak seer, maar dit sal jou nie ernstig skade doen nie.

See-egels, seesterre & wurms

Giftige stekelsEet: Plante

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

Savigny's long-spined urchin is a spiny sea animal that lives on reefs and in shallow lagoons. It has very long, thin spines that can grow up to 25 cm, and it comes out at night to graze on algae. Its spines are the part that can hurt people, so it is worth giving it plenty of room.1

Leef in

East coast of Africa, Red Sea, Indian Ocean, western Pacific, French Polynesia, Hawaii, New Caledonia and northern Australia1

Indiese Oseaan, Stille Oseaan, Rooi See, Arabiese See & Persiese Golf, Timorsee & Arafurasee, Baai van Bengale

Tuis

It is found on mixed sandy, rocky and coral seabed, especially in places disturbed by storms or other natural events. It lives from the surface down to about 70 metres deep. It often hides in crevices or under boulders during the day.1

Lengte

9 cm (3,5 in)1

Topspoed

omtrent 0,02 km/h (0,01 mph)

Swem, rowwe skatting

Wat eet dit?

It feeds at dusk on the algal mat that grows over the seabed, tearing it up as it grazes. This helps keep algae from overwhelming corals.1

Foto van Savigny's long-spined urchin — Savigny's long-spined urchin. Foto: Anders Poulsen, Deep Blue (http://www.colours.dk/). CC BY-SA 3.0, Wikimedia Commons.

Hoe om dit te herken

Usually black, with a rounded body (called a test) up to about 9 cm across1
Long, thin, hollow spines that grow in tufts and can reach 25 cm; they are usually black but can be grey, dark brown or purple1
Juveniles may have bands of lighter and darker shades, and the occasional individual is completely white1
Iridescent green or blue lines around the interambulacral areas and around the periproct (the cone-shaped region surrounding the anus)1

Word dikwels verwar met: It is very similar to Diadema setosum, which shares much of its range and often lives in the same groups. Savigny's long-spined urchin lacks the thin orange ring around the periproct that Diadema setosum has.1

Gifkrag

Giftige stekels

Skerp stekels dra die gif. Dit maak seer as jy daarop trap of dit gryp.

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

Wat doen dit as dit bang is?

When a shadow falls on it, it angles its spines towards the possible attacker.1

As sy stekels jou steek

Sit die wond in warm water, so warm as wat die persoon kan verdra sonder om te brand, en kry mediese hulp om die stekels te verwyder. Moenie self daarna grawe nie.

Bel altyd eers jou noodnommer (112, 000, 911). Dit is algemene noodhulpraad, nie mediese advies nie. Noodhulp-basiese beginsels

Bly veilig

Moet nooit aan 'n wilde dier raak, dit vang of terg nie, selfs nie 'n kleintjie nie, en selfs nie as dit lyk of dit slaap of dood is nie.
Gee dit spasie. As jy een raakloop, bly kalm, stap stadig terug en laat dit sy eie pad gaan.
As sy stekels jou steek: bly kalm, bly stil, bel jou noodnommer (112, 000, 911) of kom vinnig by 'n hospitaal uit. Onthou hoe dit gelyk het, 'n foto help.

Dit is nie uit om jou te kry nie. Dit gebruik sy gif om kos te vang of om homself te beskerm, en kruip baie eerder weg. Meer oor veilig bly

Waar in die wêreld?

Afrika Asië Europa Noord-Amerika Suid-Amerika Australië & Oseanië Stille Oseaan Indiese Oseaan Rooi See Arabiese See & Persiese Golf Timorsee & Arafurasee Baai van Bengale

Hoe groot is dit?

Hoe lank is dit?

so lank soos 3 speelgoed-boublokke in 'n rystadiger as 'n tuinslak

Hoe groot is Savigny's long-spined urchin in vergelyking met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of enige plek heen gestuur nie.

Hoe vinnig is dit?

'n Seeperdjie omtrent 0,0015 km/h (0 mph)

Savigny's long-spined urchin omtrent 0,02 km/h (0,01 mph)

'n Tuinslak omtrent 0,05 km/h (0,03 mph)

die moeite werd om te weet

Feite

Its spines are brittle, thin and hollow, and grow in tufts that can be as long as 25 cm.1

Small fish such as cardinal fish, flatworms and shrimps sometimes shelter among its long spines.1

It spawns just after the full moon, while its close relative Diadema setosum mostly spawns around days eight to ten of the lunar cycle, which keeps the two species from interbreeding.1

Its grazing helps control algae, which might otherwise smother corals.1

It is nocturnal, hiding in crevices or under boulders by day, though several individuals sometimes huddle together in the open.1

Its predators include pufferfish, porcupinefish, lobsters and snails.1

Vir gifkenners

Wetenskaplike naam: Diadema savignyi
Groep: See-egels, seesterre & wurms
Familie: Diadematidae2
Orde: Diadematoida
Kontinente: Indiese Oseaan, Stille Oseaan, Rooi See, Arabiese See & Persiese Golf, Timorsee & Arafurasee, Baai van Bengale, Die oseane
Babas: It does not have live young. Instead it releases eggs and sperm into the water (spawning), mainly during the north-east monsoon period, peaking in May, and timed to the lunar cycle.1
Gevaar vir mense: 2 / 5: Pynlik3

Waar die feite vandaan kom

Diadema savignyi (Wikipedia (CC BY-SA 4.0))
Diadema savignyi (iNaturalist): name en klassifikasie.
Venom Wiki: die gevaarvlak, die tipiese grootte en die spoedskatting is ons eie. Kyk hoe ons dit uitwerk: Hoe ons gevaar gradeer.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dierfanatici, nie 'n wetenskaplike joernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

Die skerpioen is honger! Venom Wiki is 'n eenmanprojek: gratis, sonder advertensies en sonder spoorsnyers. 'n Klein fooitjie help om dit aanlyn te hou.Voer die skerpioen