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Igishushanyo cya Short-spined crown-of-thorns starfish
No. 1277 kuri 1 402

Short-spined crown-of-thorns starfish

Acanthaster brevispinus
Ibyerekeye izina: 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
Irababaza gusaNtukayikorehoIrababaza, ariko ntizakugirira nabi bikomeye.
Oursins, inyenyeri zo mu nyanja n'inyo Amahwa afite ubumaraIrya: Bike muri buri kimwe
Akaga ku bantu: IrababazaIshobora kubabaza cyane, ariko hafi ya buri gihe nta kibazo gikomeye biteza.

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

Iba muri
Philippines, Great Barrier Reef region (Australia) and Seychelles, across a wide area of the tropics and subtropics1
Inyanja y'Abahinde, Inyanja ya Pasifika, Inyanja ya Korali, Inyanja ya Filipine
Ahabanza
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
Uburebure
35 cm (1,1 ft)3
ingano isanzwe y'ikuze
Umuvuduko wo hejuru
hafi 0,02 km/h (0,01 mph)
Koga, ikigereranyo cy'ugereranyije
Irya iki?
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
Koko!Ifoto ya Short-spined crown-of-thorns starfish
Short-spined crown-of-thorns starfish. Ifoto: Matt Kieffer. CC BY-SA 4.0, iNaturalist.

Uko wayimenya

  • 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

Ikunze kwitiranywa 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

Imbaraga z'ubumara

Amahwa afite ubumara

Amahwa atyaye ni yo atwara ubumara. Kuyikandagira cyangwa kuyifata birababaza.

Iteje akaga kangana iki ku bantu?

Akaga ku bantu: IrababazaIshobora kubabaza cyane, ariko hafi ya buri gihe nta kibazo gikomeye biteza.

Niba amahwa yayo akujombye

  • Shyira igikomere mu mazi ashyushye, ashyushye uko umuntu abyihanganira atiriwe ashya, kandi ushake ubufasha bwa muganga kugira ngo amahwa avanwemo. Ntukayacukure ubwawe.

Buri gihe banza uhamagare nimero y'ubutabazi (112, 000, 911). Izi ni inama rusange z'ubutabazi bw'ibanze, si inama za muganga. Ibanze by'ubutabazi bw'ibanze

Irinde akaga

  • Ntuzigere ukora, ufata cyangwa ushotora inyamaswa yo mu gasozi, nubwo yaba ntoya, kandi nubwo yasa n'isinziriye cyangwa yapfuye.
  • Yihe umwanya. Niba uhuye n'imwe, tuza, usubire inyuma buhoro buhoro kandi uyireke yigendere.
  • Niba amahwa yayo akujombye: tuza, ntunyeganyege, hamagara nimero y'ubutabazi (112, 000, 911) cyangwa ujye ku bitaro vuba. Ibuka uko yasaga, ifoto irafasha.

Ntigushakisha ngo ikugirire nabi. Ikoresha ubumara bwayo kugira ngo ifate ibyo kurya cyangwa yirinde, kandi ikunda cyane kwihisha. Ibindi ku kwirinda

Ni hehe ku isi?

AfurikaAziyaUburayiAmerika y'AmajyaruguruAmerika y'AmajyepfoOsitaraliya na OseyaniyaInyanja ya PasifikaInyanja y'AbahindeInyanja ya KoraliInyanja ya Filipine

Ingana gute?

Ireshya ite?

Short-spined crown-of-thorns starfish ireshya hafi 35 cm (1,1 ft)Umuneke hafi 18 cm (7,1 in)Injangwe yo mu rugo hafi 50 cm (1,6 ft)
ireshya n'ibice 11 by'ibikinisho byo kubaka biri ku murongoitinda kurusha ikinyamushongo cyo mu murima

Short-spined crown-of-thorns starfish ingana ite ugereranyije NAWE?

Ni imibare gusa ikorerwa muri mudasobwa yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihuta gute?

bikwiye kumenywa

Ibintu by'ukuri

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

Ku bahanga mu by'ubumara

Izina rya siyansi
Acanthaster brevispinus
Itsinda
Oursins, inyenyeri zo mu nyanja n'inyo
Umuryango
Acanthasteridae2
Itsinda rinini (order)
Valvatida
Imigabane
Inyanja y'Abahinde, Inyanja ya Pasifika, Inyanja ya Korali, Inyanja ya Filipine, Inyanja ngari
Abana bato
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
Akaga ku bantu
2 / 5: Irababaza3

Aho ibintu bivugwa bituruka

  1. Acanthaster brevispinus (Wikipedia (CC BY-SA 4.0))
  2. Acanthaster brevispinus (iNaturalist): amazina n'ibyiciro.
  3. Venom Wiki: urwego rw'akaga, ingano isanzwe n'ikigereranyo cy'umuvuduko ni ibyacu bwite. Reba uko tubibara: Uko tugena akaga.

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