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Setshwantsho sa khathune sa Savigny's long-spined urchin
No. 1271 ho 1 402

Savigny's long-spined urchin

Diadema savignyi
Ka lebitso: The species name honours Marie Jules César Savigny, a French zoologist who described many new marine species from the Mediterranean and Red Sea.1
E utlwisa bohloko feelaO se ke wa amaE a utlwisa bohloko, empa e ke ke ya o lematsa haholo.
Di-sea urchin, dinaledi tsa lewatle le diboko Meutlwa e nang le chefoE ja: Dimela
Kotsi ho batho: E bohlokoE ka utlwisa bohloko haholo, empa hoo e batlang e le kamehla ha e kotsi haholo.

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

E phela
East coast of Africa, Red Sea, Indian Ocean, western Pacific, French Polynesia, Hawaii, New Caledonia and northern Australia1
Lewatle la India, Lewatle la Pacific, Lewatle le Lefubedu, Lewatle la Arabia le Kgwohlo ya Persia, Lewatle la Timor le Arafura, Kgwohlo ya Bengal
Lapeng
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
Bolelele
9 cm (3,5 in)1
Lebelo le phahameng
e ka bang 0,02 km/h (0,01 mph)
Ho sesa, kakanyo feela
E ja eng?
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
Ka nnete!Foto ya 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.

Ho e tseba jwang

  • 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

Hangata e ferekanngwa le: 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

Matla a chefo

Meutlwa e nang le chefo

Meutlwa e bohale e nka chefo. Ho e hata kapa ho e tshwara ho bohloko.

E kotsi hakae ho batho?

Kotsi ho batho: E bohlokoE ka utlwisa bohloko haholo, empa hoo e batlang e le kamehla ha e kotsi haholo.

E etsang ha e tshohile?

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

Haeba meutlwa ya yona e o hlaba

  • Kenya leqeba metsing a tjhesang, a tjhesang hoo motho a ka a mamellang ntle le ho tjha, mme o fumane thuso ya bongaka ho ntsha meutlwa. O se ke wa e cheka ka bowena.

Kamehla letsetsa nomoro ya tshohanyetso pele (112, 000, 911). Ena ke tataiso e akaretsang ya thuso ya pele, hase keletso ya bongaka. Metheo ya thuso ya pele

Dula o bolokehile

  • O se ke wa ama, wa tshwara kapa wa tena phoofolo ya naheng, leha e le e nyenyane, le leha e shebahala e robetse kapa e shwele.
  • E fe sebaka. Ha o kopana le yona, dula o kgutsitse, kgutlela morao butle mme o e tlohele e tsamaye ka tsela ya yona.
  • Haeba meutlwa ya yona e o hlaba: dula o kgutsitse, o se ke wa sisinyeha, letsetsa nomoro ya tshohanyetso (112, 000, 911) kapa o ye sepetlele kapele. Hopola hore e ne e shebahala jwang, foto e a thusa.

Ha e o batle. E sebedisa chefo ya yona ho tshwara dijo kapa ho itshireletsa, mme e kgetha ho ipata. Ho eketsehileng ka ho dula o bolokehile

Hokae lefatsheng?

AfrikaAsiaYuropaAmerika LeboyaAmerika BorwaAustralia le OceaniaLewatle la PacificLewatle la IndiaLewatle le LefubeduLewatle la Arabia le Kgwohlo ya PersiaLewatle la Timor le ArafuraKgwohlo ya Bengal

E kgolo hakae?

E telele hakae?

Savigny's long-spined urchin bolelele ba e ka bang 9 cm (3,5 in)Klipi ya pampiri e ka bang 3 cm (1,2 in)Fono e bohlale e ka bang 15 cm (5,9 in)
e telele jwaloka diboloko tsa ho bapala tse 3 molenge dieha ho feta kgofu ya serapeng

Savigny's long-spined urchin e kgolo hakae ha e bapiswa le WENA?

Ke dipalo feela ka hara sebatli sa hao. Ha ho letho le bolokwang kapa le romelwang kae kapa kae.

E potlaka hakae?

ho molemo ho tseba

Dintlha

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

Bakeng sa ditsebi tsa chefo

Lebitso la saense
Diadema savignyi
Sehlopha
Di-sea urchin, dinaledi tsa lewatle le diboko
Lelapa
Diadematidae2
Tatelano
Diadematoida
Dikontinente
Lewatle la India, Lewatle la Pacific, Lewatle le Lefubedu, Lewatle la Arabia le Kgwohlo ya Persia, Lewatle la Timor le Arafura, Kgwohlo ya Bengal, Mawatle
Masea
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
Kotsi ho batho
2 / 5: E bohloko3

Moo dintlha di tswang teng

  1. Diadema savignyi (Wikipedia (CC BY-SA 4.0))
  2. Diadema savignyi (iNaturalist): mabitso le tlhophiso.
  3. Venom Wiki: boemo ba kotsi, boholo bo tlwaelehileng le kakanyo ya lebelo ke tsa rona. Bona kamoo re di balang ka teng: Kamoo re lekanyang kotsi ka teng.

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