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Eserese katuun nke Short-spined crown-of-thorns starfish
Nọmba 1277 n'ime 1 402

Short-spined crown-of-thorns starfish

Acanthaster brevispinus
Gbasara aha ya: The genus name Acanthaster comes from Ancient Greek words meaning spine or thorn and star, and the species name brevispinus is Latin for short spine.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: Ntakịrị ihe niile
Ihe ize ndụ nye mmadụ: Na-afụ ụfụỌ nwere ike ịfụ ụfụ nke ukwuu, mana ọ naghị adịkarị njọ.

The short-spined crown-of-thorns starfish is a large, spiny sea star that lives on the sea floor in parts of the western Pacific and western Indian Ocean. It belongs to a genus with only two species, and it is less well known than its relative, the common crown-of-thorns starfish. Its many arms and dense spines make it easy to tell apart from typical starfish.1

Ebe obibi
Philippines, Great Barrier Reef region (Australia) and Seychelles, across a wide area of the tropics and subtropics1
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Coral, Osimiri Filipin
Ụlọ
It has been found at moderate depths, from 18 m to 63 m. All known specimens came from soft sandy sea floor rather than hard coral reef. The Great Barrier Reef specimens were caught as unwanted bycatch by trawl nets off Townsville.1
Ogologo
35 cm (1.1 ft)3
nha okenye nkịtị
Ọsọ kacha elu
ihe dị ka 0.02 km/h (0.01 mph)
Igwu mmiri, nchepụta
Gịnị ka ọ na-eri?
Scallops appear to be an important part of its diet. It creeps up on a scallop over the hinge, where it is less visible, and traps the scallop under its disc. Laboratory observations also show that it eats a wider range of food.1
N'ezie!Foto Short-spined crown-of-thorns starfish
Short-spined crown-of-thorns starfish. Foto: Matt Kieffer. CC BY-SA 4.0, iNaturalist.

Otú ị ga-esi mata ya

  • Dense, blunt spines cover the upper surface of its central disc.1
  • The upper surface is purple-brown and gets darker towards the arms.1
  • Darker blotches run around the edge of the disc and along the arms, with a large blotch at the base of each arm.1
  • Pale marks sit on the disc between each arm.1
  • Its arm spines are shorter than those of the common crown-of-thorns starfish.1

A na-agwakọkarị ya na: It is most often confused with the common crown-of-thorns starfish, Acanthaster planci. The short-spined species has blunt spines on its upper surface, short pedicellaria (tiny pincer-like structures), pale marks between the arms and shorter arm spines. The common species has longer arm spines and lacks the pale marks.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 CoralOsimiri Filipin

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Short-spined crown-of-thorns starfish ogologo ya dị ihe dị ka 35 cm (1.1 ft)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 11 n'ahịrịnwayọ karịa ejula ubi

Kedu otú Short-spined crown-of-thorns starfish si hà ma e jiri ya tụnyere GỊ?

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Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

It catches scallops, which are fast swimmers, by sneaking up on them and trapping them under its body.1

2

It has many arms rather than the usual five, so it has lost the five-fold symmetry typical of starfish, although it starts life with five-fold symmetry.1

3

Its feeding posture, with the body arched over the prey, is so distinct that even the taste of scallop meat triggers it.1

4

In a 1973 laboratory experiment, it was crossed with the common crown-of-thorns starfish, and the hybrids reached sexual maturity at the end of their second year.1

Maka ndị ọkachamara nsị

Aha sayensị
Acanthaster brevispinus
Otu
Urchin, kpakpando osimiri na ikpuru
Ezinụlọ
Acanthasteridae2
Usoro
Valvatida
Kọntinent dị iche iche
Oké Osimiri India, Oké Osimiri Pasifik, Osimiri Coral, Osimiri Filipin, Oké osimiri niile
Ụmụ ọhụrụ
It reproduces by releasing eggs and sperm, and the young develop through bipinnaria and brachiolaria larval stages before settling as tiny five-armed starfish about 0.4 to 1 mm across.1
Ihe ize ndụ nye mmadụ
2 / 5: Na-afụ ụfụ3

Ebe eziokwu ndị a si

  1. Acanthaster brevispinus (Wikipedia (CC BY-SA 4.0))
  2. Acanthaster brevispinus (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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