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Eserese katuun nke Blue-black urchin
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Blue-black urchin

Echinothrix diadema
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 blue-black urchin is a spiny sea animal that lives on tropical coral reefs. It is black or blue-black, with long spines that show a blue shine in the light. It grazes on algae during the night and hides in cracks and under rocks by day.1

Ebe obibi
Throughout the Indo-Pacific coral reefs, from the Red Sea to Hawaii1
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Uhie, Osimiri Coral, Osimiri Filipin, Osimiri Timor na Arafura, Ọwara Bengal
Ụlọ
It lives in shallow water, from the surface down to about 10 m, and can be found as deep as 70 m. By day it hides in crevices, burrows and under rocks.1
Ogologo
10 cm ruo 20 cm (3.9 in ruo 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 grazes on algae and seagrass, and in Fiji its grazing choices matched its favourite algae, Codium geppiorum. Its grazing adds to the wearing down of coral reef structures by echinoids (sea urchins).1
N'ezie!Foto Blue-black urchin
Blue-black urchin. Foto: Cricket Raspet. CC BY 4.0, iNaturalist.

Otú ị ga-esi mata ya

  • It is black or blue-black and always dark in colour.1
  • Its spines show a blue sheen in the light.1
  • Its spines are long and closed at the tip.1
  • Its anal sac is small and dark, and it is hardly visible.1
  • Its typical diameter, including the spines, is 10 to 20 cm.1

A na-agwakọkarị ya na: Echinothrix calamaris has banded spines, except in juveniles, and dark forms show a greenish tinge rather than blue. Diadema setosum has longer spines, a smaller test (the body shell) and an orange ring around its anal sac.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.

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.

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 UhieOsimiri CoralOsimiri FilipinOsimiri Timor na ArafuraỌwara Bengal

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Blue-black 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 Blue-black urchin si hà ma e jiri ya tụnyere GỊ?

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Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

The shrimp Stegopontonia commensalis lives on it, and the shrimp Saron marmoratus stays close to it for protection.1

2

Fish of the families Apogonidae (cardinalfish) and Centriscidae (razorfish and relatives) also stay close to it for protection.1

3

Its grazing contributes to bioerosion, the slow wearing down of reef structures.1

4

It is active at night and hides in crevices, burrows and under rocks during the day.1

Maka ndị ọkachamara nsị

Aha sayensị
Echinothrix diadema
Otu
Urchin, kpakpando osimiri na ikpuru
Ezinụlọ
Diadematidae2
Usoro
Diadematoida
Kọntinent dị iche iche
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Uhie, Osimiri Coral, Osimiri Filipin, Osimiri Timor na Arafura, Ọwara Bengal, Oké osimiri niile
Ụmụ ọhụrụ
Females generally choose low-lying spots, which give their tiny larvae better protection from predators.1
Ihe ize ndụ nye mmadụ
2 / 5: Na-afụ ụfụ3

Ebe eziokwu ndị a si

  1. Echinothrix diadema (Wikipedia (CC BY-SA 4.0))
  2. Echinothrix diadema (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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