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Katuni ya Mangrove horseshoe crab
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Mangrove horseshoe crab

Carcinoscorpius rotundicauda
Kuhusu jina: It is named after mangrove swamps, where it lives. The other name, round-tailed horseshoe crab, refers to its tail, which is rounded in cross section.1
Anaweza kuuaAnaweza kuua bila matibabu. Mtu akimla, tafuta msaada haraka.
Wanyama wengine wenye sumu ya kugusa au kula Sumu akiliwaHula: NyamaSumu ya kugusa au kula, hadungi sumu
Hatari kwa watu: Hatari sanaAnaweza kumuua mtu asiyepata matibabu.

The mangrove horseshoe crab is a sea creature with a hard shell and a long spiky tail. It lives in warm, shallow, muddy coastal waters in South and Southeast Asia. Its flesh contains a deadly poison, so it is important to know it apart from a safe relative.1

Anadunga sumu au ana sumu ya kugusa? Wanyama wanaodunga sumu huingiza sumu kwa kuuma au kudunga. Wanyama wenye sumu ya kugusa au kula hudhuru wakiguswa au kuliwa. Huyu ni wa aina ya pili.
Anaishi
Tropical and brackish waters of India, Bangladesh and Southeast Asia. It may also occur in Sri Lanka, Myanmar and the Philippines.1
Bahari ya Hindi, Bahari ya Pasifiki, Bahari ya Kusini ya China, Bahari ya Andaman, Ghuba ya Bengal
Nyumbani
It lives in shallow waters with soft, sandy bottoms or extensive mud flats, especially brackish, swampy areas such as mangroves. It spends most of its life close to or on the bottom. People meet it when fishermen collect it for food in Southeast Asia.1
Urefu
28 cm hadi 40 cm (11 in hadi 1.3 ft)1
Kasi ya juu
takriban km 0.5 kwa saa (maili 0.31 kwa saa)
Kuogelea, makadirio
Hula nini?
It is a selective feeder on the bottom, eating mainly insect larvae, small fish, small crabs and thin-shelled bivalves. It has no jaws, so it grinds food with bristles on its legs and passes it to its mouth with its small front pincers.1
Kweli kabisa!Picha ya Mangrove horseshoe crab
Mangrove horseshoe crab. Picha: Amada44. CC BY 3.0, Wikimedia Commons.

Jinsi ya kumtambua

  • It is the smallest of the four living horseshoe crab species.1
  • Its tail has a rounded cross section. In the other species the tail is essentially triangular.1
  • Females are larger than males. Females are typically about 30.5 to 31.5 cm long including the tail.1
  • Adults have a large dome-shaped front shell, a smaller rear shell with spines on its edge, and a spike-like tail.1

Mara nyingi huchanganywa na: It is often confused with Tachypleus gigas, which is harmless to eat. The mangrove horseshoe crab has a rounded tail, while T. gigas has a triangular one. Tachypleus tridentatus can live in the same habitat.1

Nguvu ya sumu

Sumu akiliwa

Ni hatari tu kitu kikimla.

Sumu yake hufanya nini?

Its flesh contains tetrodotoxin (TTX), a poison that is lethal. This is a poison in the food, not a venom from a bite or sting.1

Ana hatari gani kwa watu?

Hatari kwa watu: Hatari sanaAnaweza kumuua mtu asiyepata matibabu.

Several cases of food poisoning have happened after people ate this crab, and some of these cases were fatal. These cases usually occur when the crab is mistaken for the harmless T. gigas.1

Mtu akimgusa au kumla

  • Mtu akimla au akipata dalili baada ya kumla: piga namba ya dharura au kituo cha taarifa za sumu mara moja.

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.
  • Ukimgusa au kumla: usisugue macho wala mdomo, nawa mikono na utafute msaada wa kitabibu.

Hakuwindi wewe. Sumu yake ipo tu ili asiliwe na yeyote. Zaidi kuhusu kukaa salama

Wapi duniani?

AfrikaAsiaUlayaAmerika KaskaziniAmerika KusiniAustralia na OceaniaBahari ya PasifikiBahari ya HindiBahari ya Kusini ya ChinaBahari ya AndamanGhuba ya Bengal

Ana ukubwa gani?

Ana urefu gani?

Mangrove horseshoe crab urefu wa takriban 40 cm (1.3 ft)Ndizi takriban 18 cm (7.1 in)Paka wa nyumbani takriban 50 cm (1.6 ft)
urefu sawa na ndizi 2 zilizopangwa mstariurefu sawa na matofali 12 ya kuchezea yaliyopangwa mstari

Mangrove horseshoe crab ana ukubwa gani ukilinganisha na WEWE?

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

Ana kasi gani?

inafaa kujua

Ukweli

1

Its flesh contains a lethal poison, but its roe is a prized delicacy in Thailand, where it is served in a salad called yam khai maeng da.1

2

Horseshoe crabs have remained almost unchanged in shape and size for millions of years, and their fossils over 400 million years old look almost identical to living ones.1

3

Juveniles grow about 33% bigger each time they moult, taking about five moults to grow from 2 cm to adult size.1

4

Males cling to the backs of females for long periods before the eggs are laid, and it is thought that this species is monogamous.1

5

Horseshoe crabs have two compound eyes, which are mainly used to find a mate.1

Kuvunja dhana potofu

Dhana potofu: All horseshoe crabs are safe to eat.

Ukweli: The mangrove horseshoe crab is not safe. Its flesh contains lethal tetrodotoxin, unlike T. gigas, which is harmless to eat.1

Kwa wataalamu wa sumu

Jina la kisayansi
Carcinoscorpius rotundicauda
Kundi
Wanyama wengine wenye sumu ya kugusa au kula
Familia
Limulidae2
Mpangilio
Xiphosurida
Mabara
Bahari ya Hindi, Bahari ya Pasifiki, Bahari ya Kusini ya China, Bahari ya Andaman, Ghuba ya Bengal, Bahari kuu
Watoto
Females lay about 3500 eggs in a hole dug in the sand or mud, and the male fertilises them. The large eggs hatch after a couple of weeks into miniature versions of the adults.1
Hatari kwa watu
4 / 5: Hatari sana3

Ukweli unatoka wapi

  1. Mangrove horseshoe crab (Wikipedia (CC BY-SA 4.0))
  2. Carcinoscorpius rotundicauda (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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