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Igishushanyo cya Savigny's long-spined urchin
No. 1271 kuri 1 402

Savigny's long-spined urchin

Diadema savignyi
Ibyerekeye izina: The species name honours Marie Jules César Savigny, a French zoologist who described many new marine species from the Mediterranean and Red Sea.1
Irababaza gusaNtukayikorehoIrababaza, ariko ntizakugirira nabi bikomeye.
Oursins, inyenyeri zo mu nyanja n'inyo Amahwa afite ubumaraIrya: Ibimera
Akaga ku bantu: IrababazaIshobora kubabaza cyane, ariko hafi ya buri gihe nta kibazo gikomeye biteza.

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

Iba muri
East coast of Africa, Red Sea, Indian Ocean, western Pacific, French Polynesia, Hawaii, New Caledonia and northern Australia1
Inyanja y'Abahinde, Inyanja ya Pasifika, Inyanja Itukura, Inyanja ya Arabiya n'Ikigobe cy'Ubuperesi, Inyanja ya Timor na Arafura, Ikigobe cya Bengali
Ahabanza
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
Uburebure
9 cm (3,5 in)1
Umuvuduko wo hejuru
hafi 0,02 km/h (0,01 mph)
Koga, ikigereranyo cy'ugereranyije
Irya iki?
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
Koko!Ifoto ya Savigny's long-spined urchin
Savigny's long-spined urchin. Ifoto: Anders Poulsen, Deep Blue (http://www.colours.dk/). CC BY-SA 3.0, Wikimedia Commons.

Uko wayimenya

  • 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

Ikunze kwitiranywa na: 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

Imbaraga z'ubumara

Amahwa afite ubumara

Amahwa atyaye ni yo atwara ubumara. Kuyikandagira cyangwa kuyifata birababaza.

Iteje akaga kangana iki ku bantu?

Akaga ku bantu: IrababazaIshobora kubabaza cyane, ariko hafi ya buri gihe nta kibazo gikomeye biteza.

Ikora iki iyo ifite ubwoba?

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

Niba amahwa yayo akujombye

  • Shyira igikomere mu mazi ashyushye, ashyushye uko umuntu abyihanganira atiriwe ashya, kandi ushake ubufasha bwa muganga kugira ngo amahwa avanwemo. Ntukayacukure ubwawe.

Buri gihe banza uhamagare nimero y'ubutabazi (112, 000, 911). Izi ni inama rusange z'ubutabazi bw'ibanze, si inama za muganga. Ibanze by'ubutabazi bw'ibanze

Irinde akaga

  • Ntuzigere ukora, ufata cyangwa ushotora inyamaswa yo mu gasozi, nubwo yaba ntoya, kandi nubwo yasa n'isinziriye cyangwa yapfuye.
  • Yihe umwanya. Niba uhuye n'imwe, tuza, usubire inyuma buhoro buhoro kandi uyireke yigendere.
  • Niba amahwa yayo akujombye: tuza, ntunyeganyege, hamagara nimero y'ubutabazi (112, 000, 911) cyangwa ujye ku bitaro vuba. Ibuka uko yasaga, ifoto irafasha.

Ntigushakisha ngo ikugirire nabi. Ikoresha ubumara bwayo kugira ngo ifate ibyo kurya cyangwa yirinde, kandi ikunda cyane kwihisha. Ibindi ku kwirinda

Ni hehe ku isi?

AfurikaAziyaUburayiAmerika y'AmajyaruguruAmerika y'AmajyepfoOsitaraliya na OseyaniyaInyanja ya PasifikaInyanja y'AbahindeInyanja ItukuraInyanja ya Arabiya n'Ikigobe cy'UbuperesiInyanja ya Timor na ArafuraIkigobe cya Bengali

Ingana gute?

Ireshya ite?

Savigny's long-spined urchin ireshya hafi 9 cm (3,5 in)Trombone yo gufata impapuro hafi 3 cm (1,2 in)Telefoni igezweho hafi 15 cm (5,9 in)
ireshya n'ibice 3 by'ibikinisho byo kubaka biri ku murongoitinda kurusha ikinyamushongo cyo mu murima

Savigny's long-spined urchin ingana ite ugereranyije NAWE?

Ni imibare gusa ikorerwa muri mudasobwa yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihuta gute?

bikwiye kumenywa

Ibintu by'ukuri

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

Ku bahanga mu by'ubumara

Izina rya siyansi
Diadema savignyi
Itsinda
Oursins, inyenyeri zo mu nyanja n'inyo
Umuryango
Diadematidae2
Itsinda rinini (order)
Diadematoida
Imigabane
Inyanja y'Abahinde, Inyanja ya Pasifika, Inyanja Itukura, Inyanja ya Arabiya n'Ikigobe cy'Ubuperesi, Inyanja ya Timor na Arafura, Ikigobe cya Bengali, Inyanja ngari
Abana bato
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
Akaga ku bantu
2 / 5: Irababaza3

Aho ibintu bivugwa bituruka

  1. Diadema savignyi (Wikipedia (CC BY-SA 4.0))
  2. Diadema savignyi (iNaturalist): amazina n'ibyiciro.
  3. Venom Wiki: urwego rw'akaga, ingano isanzwe n'ikigereranyo cy'umuvuduko ni ibyacu bwite. Reba uko tubibara: Uko tugena akaga.

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