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Nataal bu ñu rëdd ci Savigny's long-spined urchin
No 1271 ci 1 402

Savigny's long-spined urchin

Diadema savignyi
Ci turam: The species name honours Marie Jules César Savigny, a French zoologist who described many new marine species from the Mediterranean and Red Sea.1
Dafay metti rekkBul laalDafay metti, waaye du la lor bu bon.
Oursin, biddiwu géej ak ver Dag yu am daŋarDafay lekk: Gàncax
Musiba ci nit: Dafay mettiMën na metti lool, waaye lu bon du faral di am.

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

Dafay dund ci
East coast of Africa, Red Sea, Indian Ocean, western Pacific, French Polynesia, Hawaii, New Caledonia and northern Australia1
Mbàmbulaanu End, Mbàmbulaanu Pasifik, Géej gu Xonq, Géeju Arabi ak Golfu Pers, Géeju Timor ak Arafura, Golfu Bengal
Kër
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
Guddaay
9 cm (3,5 in)1
Gaawaay bu gën a kawe
lu tollu ci 0,02 km/h (0,01 mph)
Féey, xalaat
Lan lay lekk?
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
Dëgg-dëgg!Fotoy 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.

Ni ngay ko xàmmee

  • 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

Ñu ngi koy faral di jaxasoo ak: 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

Kàttanu daŋar

Dag yu am daŋar

Ay dag yu ñaw ñoo yor daŋar bi. Teg tànk ci kawam walla jàpp ko dafay metti.

Ni mu lore nit ñi?

Musiba ci nit: Dafay mettiMën na metti lool, waaye lu bon du faral di am.

Lan lay def bu tiitee?

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

Su ay dagam jamee la

  • Teg gaañu-gaañu bi ci ndox mu tàng, lu nit ki mën a muñ waaye bu dul ko lakk, te wutal ndimbal doktoor ngir dindi dag yi. Bul gas ngir wut leen sa bopp.

Saa su nekk, woo jëkk sa nimerob urgence (112, 000, 911). Lii ay ndigal yu yaatu ci ndimbal yu jëkk la, du ndigalu doktoor. Li war a xam ci ndimbal yu jëkk

Sàmmal sa bopp

  • Bul laal mukk, bul jàpp, bul sonal ab rab bu àll, doonte bu ndaw la, te doonte dafa mel ni dafa nelaw walla dafa dee.
  • May ko bérab. Su nga ko gisee, dalal, dellu ginnaaw ndànk-ndànk te bàyyi ko mu dem yoonam.
  • Su ay dagam jamee la: dalal, bul yëngu, woo sa nimerob urgence (112, 000, 911) walla dem lopitaan ci gaaw. Bul fàtte ni mu meloon, ab nataal dina dimbali.

Du la wut. Dafay jëfandikoo daŋaram ngir jàpp lu muy lekk walla ngir aar boppam, te nëbbu moo ko gën a neex. Yeneen ci ni ngay sàmme sa bopp

Fan ci àddina?

AfrigAsiTugalAmerig gu Bëj-gànnaarAmerig gu Bëj-saalumOstarali ak OseyaniMbàmbulaanu PasifikMbàmbulaanu EndGéej gu XonqGéeju Arabi ak Golfu PersGéeju Timor ak ArafuraGolfu Bengal

Ni mu réye?

Ni mu guddoo?

Savigny's long-spined urchin guddaayam lu tollu ci 9 cm (3,5 in)Ab trombone lu tollu ci 3 cm (1,2 in)Ab smartphone lu tollu ci 15 cm (5,9 in)
guddu na ni 3 bloku tabax yu ñu toftalegën a yéex escargot bu tóokër

Savigny's long-spined urchin ni mu réye ci wetu YOW?

Ay waññ rekk ci sa navigateur. Dara du denc te dara du yónnee fenn.

Ni mu gaawe?

baax na xam

Xibaar

1

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

2

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

3

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

4

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

5

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

6

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

Ngir boroom xam-xam ci daŋar

Turu xam-xam
Diadema savignyi
Mbooloo
Oursin, biddiwu géej ak ver
Njaboot
Diadematidae2
Toftal
Diadematoida
Kontinaa yi
Mbàmbulaanu End, Mbàmbulaanu Pasifik, Géej gu Xonq, Géeju Arabi ak Golfu Pers, Géeju Timor ak Arafura, Golfu Bengal, Mbàmbulaan yi
Liir yi
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
Musiba ci nit
2 / 5: Dafay metti3

Fa xibaar yi jóge

  1. Diadema savignyi (Wikipedia (CC BY-SA 4.0))
  2. Diadema savignyi (iNaturalist): tur ak ni ñu leen séddale.
  3. Venom Wiki: tolluwaayu musiba bi, réyaay bu yem bi ak xalaatu gaawaay bi, nun ñoo leen defar. Seetal ni nu leen waññe: Ni nuy natte musiba.

Xibaar bu nekk ci xët wii am na ab nimero buy won fa mu jóge. Su nu juumee, baal nu, nun ay nit ñu bëgg rab lanu, du ab jurnaalu xam-xam. Wax nu ko ci [email protected] te dinanu ko jubbanti.

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