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Eserese katuun nke Radiant sea urchin
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Radiant sea urchin

Astropyga radiata
Gbasara aha ya: Astropyga comes from Greek words meaning star and anus, after the star-shaped pattern around its anus. Radiata is Latin for radiant, after its colours and spines.1
Naanị na-afụ ụfụEmetụla ya akaỌ na-afụ ụfụ, mana ọ gaghị emerụ gị ahụ nke ukwuu.
Urchin, kpakpando osimiri na ikpuru Mkpu na-agba nsịNri ya: Osisi
Ihe ize ndụ nye mmadụ: Na-afụ ụfụỌ nwere ike ịfụ ụfụ nke ukwuu, mana ọ naghị adịkarị njọ.

The radiant sea urchin is a large, colourful sea urchin with long, spiky spines. It lives in warm, shallow seas across the Indo-Pacific, from the African coast to Hawaii and Australia. Its spines are venomous, so it is one to admire from a distance.1

Ebe obibi
Tropical Indo-Pacific, from the African coast to Hawaii and Australian waters1
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Coral, Osimiri Filipin, Osimiri Timor na Arafura, Ọwara Bengal
Ụlọ
It is often found in lagoons and bays where the seabed is sand, shingle or coral rubble. It usually lives at 10 to 30 metres deep, and can go down to about 70 metres. Sometimes many urchins gather together in one place.1
Ogologo
20 cm (7.9 in)1
Ọsọ kacha elu
ihe dị ka 0.02 km/h (0.01 mph)
Igwu mmiri, nchepụta
Gịnị ka ọ na-eri?
It is mostly active at night and feeds by grazing on algae. It has five powerful teeth in a mouth at the centre of its underside, known as an Aristotle's lantern.1
N'ezie!Foto Radiant sea urchin
Radiant sea urchin. Foto: Dan Schofield. CC BY 4.0, iNaturalist.

Otú ị ga-esi mata ya

  • A large urchin, with a body (test) up to 20 cm across.1
  • Long, hollow spines up to 4 cm, in five vertical clusters.1
  • Between the clusters are bare, V-shaped red areas with lines of iridescent blue dots.1
  • The rest of the body and spines range from reddish brown to purple, dark brown or nearly black.1
  • Juveniles have spines with banding across them, and this sometimes stays into adulthood.1

A na-agwakọkarị ya na: It is often called the false fire urchin to tell it apart from the true fire urchin, Asthenosoma varium.1

Ike nsị

Mkpu na-agba nsị

Mkpu dị nkọ na-ebu nsị ahụ. Ịzọ ya ụkwụ ma ọ bụ ijide ya na-afụ ụfụ.

Gịnị ka nsị ọ na-agba na-eme?

Its spines are venomous and can cause painful wounds. The spines are long and hollow, and the shorter of the two kinds are the venomous ones.1

Kedu otú o si dị egwu nye mmadụ?

Ihe ize ndụ nye mmadụ: Na-afụ ụfụỌ nwere ike ịfụ ụfụ nke ukwuu, mana ọ naghị adịkarị njọ.

It is not deadly to humans, but its spines can cause painful wounds. Because it is large and brightly coloured, divers can usually see it, so injuries from stepping on one are fairly rare. On the 'Kings of Pain' pain index it scores 12 out of 30.1

Gịnị ka ọ na-eme mgbe ụjọ tụrụ ya?

It is sensitive to light and can angle its spines towards an approaching threat.1

Ọ bụrụ na mkpu ya dụrụ gị

  • Tinye ọnya ahụ n'ime mmiri ọkụ, nke ọkụ dị ka onye ahụ nwere ike ịnagide n'ere ya ọkụ, chọọkwa enyemaka ọgwụ iji wepụ mkpu ndị ahụ. Egwula ha n'onwe gị.

Na-ebu ụzọ kpọọ nọmba mberede gị mgbe niile (112, 000, 911). Nke a bụ ndụmọdụ enyemaka mbụ n'ozuzu, ọ bụghị ndụmọdụ ọgwụ. Isi ihe enyemaka mbụ

Nọrọ na nchekwa

  • Emetụla anụ ọhịa aka, ejidela ya, emekwala ya ihe ọjọọ, ọbụna obere, ọbụna ma ọ dị ka ọ na-ehi ụra ma ọ bụ nwụọ anwụ.
  • Nye ya ohere. Ọ bụrụ na ị zutere otu, dị jụụ, laghachi azụ nwayọ, hapụ ya ka ọ gaa ụzọ ya.
  • Ọ bụrụ na mkpu ya dụrụ gị: dị jụụ, emegharịla ahụ, kpọọ nọmba mberede gị (112, 000, 911) ma ọ bụ gaa ụlọ ọgwụ ngwa ngwa. Cheta ka o si dị, foto na-enye aka.

Ọ naghị achụ gị. Ọ na-eji nsị ya ejide nri ma ọ bụ chebe onwe ya, ọ ga-akakwa mma n'anya ya ịzo onwe ya. Ihe ndị ọzọ gbasara ịnọ na nchekwa

Ebee n'ụwa?

AfrịkaEshiaYuropUgwu AmerikaNdịda AmerikaỌstrelia na OsheniaOké Osimiri PasifikOké Osimiri IndiaOsimiri CoralOsimiri FilipinOsimiri Timor na ArafuraỌwara Bengal

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Radiant sea urchin ogologo ya dị ihe dị ka 20 cm (7.9 in)Unere ihe dị ka 18 cm (7.1 in)Nwamba ụlọ ihe dị ka 50 cm (1.6 ft)
dị ogologo dị ka blọk egwuregwu 6 n'ahịrịnwayọ karịa ejula ubi

Kedu otú Radiant sea urchin si hà ma e jiri ya tụnyere GỊ?

Naanị mgbakọ na mwepụ n'ime browser gị. Ọ dịghị ihe echekwara ma ọ bụ ezigara ebe ọ bụla.

Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

A crab called Dorippe frascone carries the urchin on its back.1

2

Several shrimps, crabs and small fish live among its spines for shelter.1

3

Its scientific name refers to a star-shaped pattern around its anus, not to the animal's shape as a whole.1

4

Its bright colours and size make it a favourite subject for underwater photographers and some expert fish-keepers.1

5

Its young larvae drift in the ocean as plankton before they settle on the seabed.1

Maka ndị ọkachamara nsị

Aha sayensị
Astropyga radiata
Otu
Urchin, kpakpando osimiri na ikpuru
Ezinụlọ
Diadematidae2
Usoro
Diadematoida
Kọntinent dị iche iche
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Coral, Osimiri Filipin, Osimiri Timor na Arafura, Ọwara Bengal, Oké osimiri niile
Ụmụ ọhụrụ
Males and females are separate. Eggs and sperm are released into the water, and the larvae drift as plankton through several stages before settling on the seabed and becoming juveniles.1
Ihe ize ndụ nye mmadụ
2 / 5: Na-afụ ụfụ3

Ebe eziokwu ndị a si

  1. Astropyga radiata (Wikipedia (CC BY-SA 4.0))
  2. Astropyga radiata (iNaturalist): aha na nhazi ọkwa.
  3. Venom Wiki: ọkwa ihe ize ndụ, nha nkịtị na nchepụta ọsọ bụ nke anyị. Lee otú anyị si achọpụta ha: Otú anyị si atụ ihe ize ndụ.

Eziokwu ọ bụla dị na peeji a nwere nọmba na-egosi ebe o si. Ọ bụrụ na anyị mehiere ihe, ndo, anyị bụ ndị hụrụ anụmanụ n'anya, ọ bụghị akwụkwọ akụkọ sayensị. Gwa anyị na [email protected], anyị ga-edozi ya.

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Ọ na-ebikwa na: Oké Osimiri India

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