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Ikhathuni ka-Savigny's long-spined urchin
Inombolo 1271 kwezi-1 402

Savigny's long-spined urchin

Diadema savignyi
Malunga negama: The species name honours Marie Jules César Savigny, a French zoologist who described many new marine species from the Mediterranean and Red Sea.1
Kubuhlungu njeMusa ukuchukumisaKubuhlungu, kodwa akusayi kukwenzakalisa kakhulu.
Ii-sea urchin, iinkwenkwezi zolwandle neentshulube Amava anetyhefuSitya: Izityalo
Ingozi ebantwini: KubuhlunguKunokuba buhlungu ngokwenene, kodwa phantse akusoze kube kubi kakhulu.

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

Sihlala
East coast of Africa, Red Sea, Indian Ocean, western Pacific, French Polynesia, Hawaii, New Caledonia and northern Australia1
uLwandlekazi lwaseIndiya, uLwandlekazi lwePasifiki, uLwandle oluBomvu, uLwandle lwaseArabhiya neGulf yasePersi, uLwandle lweTimor ne-Arafura, iBhayi yaseBengal
Ekhaya
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
Ubude
9 cm (3,5 in)1
Esona santya siphezulu
malunga ne-0,02 km/h (0,01 mph)
Ukuqubha, uqikelelo nje
Sitya ntoni?
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
Ngokwenene!Ifoto ka-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.

Indlela yokusiqaphela

  • 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

Sidla ngokubhidaniswa no: 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

Amandla etyhefu yokuluma nokuhlaba

Amava anetyhefu

Amava abukhali aphethe ityhefu. Ukusinyathela okanye ukusibamba kubuhlungu.

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: KubuhlunguKunokuba buhlungu ngokwenene, kodwa phantse akusoze kube kubi kakhulu.

Senza ntoni xa soyika?

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

Ukuba amava aso ayakugwaza

  • Faka inxeba emanzini ashushu, ashushu kangangoko umntu angakwazi ukunyamezela ngaphandle kokutshiswa, kwaye ufumane uncedo lwezonyango ukuze kususwe amava. Musa ukuwemba ngokwakho.

Soloko utsalela inombolo kaxakeka kuqala (112, 000, 911). Esi sisikhokelo soncedo lokuqala ngokubanzi, asilocebiso lwezonyango. Iziseko zoncedo lokuqala

Hlala ukhuselekile

  • Ungaze uchukumise, ubambe okanye uqhule isilwanyana sasendle, nokuba sincinci, kwaye nokuba sibonakala silele okanye sifile.
  • Sinike indawo. Ukuba udibana naso, hlala uzolile, buyela umva kancinci kwaye usiyeke sihambe ngendlela yaso.
  • Ukuba amava aso ayakugwaza: hlala uzolile, musa ukushukuma, tsalela inombolo kaxakeka (112, 000, 911) okanye uye esibhedlele ngokukhawuleza. Khumbula ukuba sasikhangeleka njani, ifoto iyanceda.

Asikuzingeli. Sisebenzisa ityhefu yaso ukubamba ukutya okanye ukuzikhusela, kwaye singakhetha ukuzimela. Okungakumbi malunga nokuhlala ukhuselekile

Phi emhlabeni?

IAfrikaIAsiyaIYurophuuMntla MelikauMzantsi MelikaIOstreliya neOceaniauLwandlekazi lwePasifikiuLwandlekazi lwaseIndiyauLwandle oluBomvuuLwandle lwaseArabhiya neGulf yasePersiuLwandle lweTimor ne-ArafuraiBhayi yaseBengal

Sikhulu kangakanani?

Side kangakanani?

Savigny's long-spined urchin malunga ne-9 cm ubude (3,5 in)Isiqhobosho sephepha malunga ne-3 cm (1,2 in)Ifowuni ehlakaniphileyo malunga ne-15 cm (5,9 in)
ubude obulingana neebhloko zokudlala zokwakha eziyi-3 zilandelelanasicotha kunenkumba yasegadini

U-Savigny's long-spined urchin mkhulu kangakanani xa uthelekisa NAWE?

Zizibalo nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwa naphi na.

Sikhawuleza kangakanani?

kufanelekile ukwazi

Iinyaniso

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

Kwiingcali zetyhefu

Igama lenzululwazi
Diadema savignyi
Iqela
Ii-sea urchin, iinkwenkwezi zolwandle neentshulube
Usapho
Diadematidae2
Ucwangco
Diadematoida
Amazwekazi
uLwandlekazi lwaseIndiya, uLwandlekazi lwePasifiki, uLwandle oluBomvu, uLwandle lwaseArabhiya neGulf yasePersi, uLwandle lweTimor ne-Arafura, iBhayi yaseBengal, Iilwandlekazi
Iintsana
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
Ingozi ebantwini
2 / 5: Kubuhlungu3

Apho iinyaniso zivela khona

  1. Diadema savignyi (Wikipedia (CC BY-SA 4.0))
  2. Diadema savignyi (iNaturalist): amagama nokuhlelwa.
  3. Venom Wiki: inqanaba lengozi, ubungakanani obuqhelekileyo noqikelelo lwesantya zezethu. Bona indlela esizifumana ngayo: Indlela esilinganisa ngayo ingozi.

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