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Setshwantsho sa khathune sa Blue-black urchin
No. 1273 ho 1 402

Blue-black urchin

Echinothrix diadema
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.

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

E phela
Throughout the Indo-Pacific coral reefs, from the Red Sea to Hawaii1
Lewatle la India, Lewatle la Pacific, Lewatle le Lefubedu, Lewatle la Coral, Lewatle la Philippine, Lewatle la Timor le Arafura, Kgwohlo ya Bengal
Lapeng
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
Bolelele
10 cm ho isa ho 20 cm (3,9 in ho isa ho 7,9 in)1
Lebelo le phahameng
e ka bang 0,02 km/h (0,01 mph)
Ho sesa, kakanyo feela
E ja eng?
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
Ka nnete!Foto ya Blue-black urchin
Blue-black urchin. Foto: Cricket Raspet. CC BY 4.0, iNaturalist.

Ho e tseba jwang

  • 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

Hangata e ferekanngwa le: 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

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.

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

E kgolo hakae?

E telele hakae?

Blue-black urchin bolelele ba e ka bang 20 cm (7,9 in)Banana e ka bang 18 cm (7,1 in)Katse ya lapeng e ka bang 50 cm (1,6 ft)
e telele jwaloka diboloko tsa ho bapala tse 6 molenge dieha ho feta kgofu ya serapeng

Blue-black 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

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

Bakeng sa ditsebi tsa chefo

Lebitso la saense
Echinothrix diadema
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 Coral, Lewatle la Philippine, Lewatle la Timor le Arafura, Kgwohlo ya Bengal, Mawatle
Masea
Females generally choose low-lying spots, which give their tiny larvae better protection from predators.1
Kotsi ho batho
2 / 5: E bohloko3

Moo dintlha di tswang teng

  1. Echinothrix diadema (Wikipedia (CC BY-SA 4.0))
  2. Echinothrix diadema (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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Tse ding tsa sehlopha se le seng: Di-sea urchin, dinaledi tsa lewatle le diboko

E boetse e phela: Lewatle la India

Fepa phephengnkgo ya ditjhelete tsa teboho, e e boloka e le mahala