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Katuni ya Blue-black urchin
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Blue-black urchin

Echinothrix diadema
Inauma tuUsiguseInauma, lakini haitakudhuru vibaya.
Koche, nyota wa bahari na minyoo Miiba yenye sumuHula: Mimea
Hatari kwa watu: InaumaInaweza kuuma sana, lakini karibu kamwe si jambo zito.

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

Anaishi
Throughout the Indo-Pacific coral reefs, from the Red Sea to Hawaii1
Bahari ya Hindi, Bahari ya Pasifiki, Bahari ya Shamu, Bahari ya Matumbawe, Bahari ya Ufilipino, Bahari ya Timor na Arafura, Ghuba ya Bengal
Nyumbani
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
Urefu
10 cm hadi 20 cm (3.9 in hadi 7.9 in)1
Kasi ya juu
takriban km 0.02 kwa saa (maili 0.01 kwa saa)
Kuogelea, makadirio
Hula nini?
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
Kweli kabisa!Picha ya Blue-black urchin
Blue-black urchin. Picha: Cricket Raspet. CC BY 4.0, iNaturalist.

Jinsi ya kumtambua

  • 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

Mara nyingi huchanganywa 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

Nguvu ya sumu

Miiba yenye sumu

Miiba mikali hubeba sumu. Kumkanyaga au kumshika kunauma.

Ana hatari gani kwa watu?

Hatari kwa watu: InaumaInaweza kuuma sana, lakini karibu kamwe si jambo zito.

Miiba yake ikikuchoma

  • Weka jeraha kwenye maji ya moto, moto kiasi ambacho mtu anaweza kuvumilia bila kuungua, na utafute msaada wa kitabibu kuondoa miiba. Usiichokonoe mwenyewe.

Daima piga namba ya dharura kwanza (112, 000, 911). Huu ni mwongozo wa jumla wa huduma ya kwanza, si ushauri wa kitabibu. Misingi ya huduma ya kwanza

Kaa salama

  • Kamwe usimguse, kumkamata wala kumchokoza mnyama wa porini, hata akiwa mdogo, na hata akionekana amelala au amekufa.
  • Mpe nafasi. Ukikutana naye, tulia, rudi nyuma polepole na umwache aende zake.
  • Miiba yake ikikuchoma: tulia, usitikisike, piga namba yako ya dharura (112, 000, 911) au nenda hospitali haraka. Kumbuka alivyoonekana, picha husaidia.

Hakuwindi wewe. Hutumia sumu yake kukamata chakula au kujilinda, na hupendelea zaidi kujificha. Zaidi kuhusu kukaa salama

Wapi duniani?

AfrikaAsiaUlayaAmerika KaskaziniAmerika KusiniAustralia na OceaniaBahari ya PasifikiBahari ya HindiBahari ya ShamuBahari ya MatumbaweBahari ya UfilipinoBahari ya Timor na ArafuraGhuba ya Bengal

Ana ukubwa gani?

Ana urefu gani?

Blue-black urchin urefu wa takriban 20 cm (7.9 in)Ndizi takriban 18 cm (7.1 in)Paka wa nyumbani takriban 50 cm (1.6 ft)
urefu sawa na matofali 6 ya kuchezea yaliyopangwa mstaripolepole kuliko konokono wa bustanini

Blue-black urchin ana ukubwa gani ukilinganisha na WEWE?

Ni hesabu tu kwenye kivinjari chako. Hakuna kinachohifadhiwa wala kutumwa popote.

Ana kasi gani?

inafaa kujua

Ukweli

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

Kwa wataalamu wa sumu

Jina la kisayansi
Echinothrix diadema
Kundi
Koche, nyota wa bahari na minyoo
Familia
Diadematidae2
Mpangilio
Diadematoida
Mabara
Bahari ya Hindi, Bahari ya Pasifiki, Bahari ya Shamu, Bahari ya Matumbawe, Bahari ya Ufilipino, Bahari ya Timor na Arafura, Ghuba ya Bengal, Bahari kuu
Watoto
Females generally choose low-lying spots, which give their tiny larvae better protection from predators.1
Hatari kwa watu
2 / 5: Inauma3

Ukweli unatoka wapi

  1. Echinothrix diadema (Wikipedia (CC BY-SA 4.0))
  2. Echinothrix diadema (iNaturalist): majina na uainishaji.
  3. Venom Wiki: kiwango cha hatari, ukubwa wa kawaida na makadirio ya kasi ni yetu wenyewe. Ona jinsi tunavyovipata: Jinsi tunavyopima hatari.

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