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Ikhathuni ka-Mangrove horseshoe crab
Inombolo 1402 kwezi-1 402

Mangrove horseshoe crab

Carcinoscorpius rotundicauda
Malunga negama: 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
SinokubulalaSinokubulala ukuba umntu akanyangwanga. Ukuba umntu uyasitya, fumana uncedo ngokukhawuleza.
Ezinye izilwanyana ezityhefayo Siyatyhefa xa sityiwaSitya: InyamaSiyatyhefa, asinatyhefu yokuluma okanye yokuhlaba
Ingozi ebantwini: Siyingozi kakhuluSinokubulala umntu ongafumani nyango.

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

Siyatyhefa okanye sinetyhefu? Izilwanyana ezinetyhefu zitofa ityhefu ngokuluma okanye ngokuhlaba. Izilwanyana ezityhefayo ziyingozi xa uzichukumisa okanye uzitya. Esi siyatyhefa.
Sihlala
Tropical and brackish waters of India, Bangladesh and Southeast Asia. It may also occur in Sri Lanka, Myanmar and the Philippines.1
uLwandlekazi lwaseIndiya, uLwandlekazi lwePasifiki, uLwandle lwaseMzantsi China, uLwandle lweAndaman, iBhayi yaseBengal
Ekhaya
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
Ubude
28 cm ukuya ku-40 cm (11 in ukuya ku-1,3 ft)1
Esona santya siphezulu
malunga ne-0,5 km/h (0,31 mph)
Ukuqubha, uqikelelo nje
Sitya ntoni?
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
Ngokwenene!Ifoto ka-Mangrove horseshoe crab
Mangrove horseshoe crab. Ifoto: Amada44. CC BY 3.0, Wikimedia Commons.

Indlela yokusiqaphela

  • 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

Sidla ngokubhidaniswa no: 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

Amandla etyhefu

Siyatyhefa xa sityiwa

Siyingozi kuphela ukuba kukho into esityayo.

Ityhefu yaso etyhefayo (xa usichukumisa okanye usitya) yenza ntoni?

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

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: Siyingozi kakhuluSinokubulala umntu ongafumani nyango.

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

Ukuba umntu usichukumisile okanye usityile

  • Ukuba umntu usityile okanye uneempawu emva kokusitya: tsalela inombolo kaxakeka okanye iziko lezityhefu (poison centre) ngoko nangoko.

Soloko utsalela inombolo kaxakeka kuqala (112, 000, 911). Esi sisikhokelo soncedo lokuqala ngokubanzi, asilocebiso lwezonyango. Iziseko zoncedo lokuqala

Hlala ukhuselekile

  • Ungaze uchukumise, ubambe okanye uqhule isilwanyana sasendle, nokuba sincinci, kwaye nokuba sibonakala silele okanye sifile.
  • Sinike indawo. Ukuba udibana naso, hlala uzolile, buyela umva kancinci kwaye usiyeke sihambe ngendlela yaso.
  • Ukuba usichukumisile okanye usityile: musa ukukhuhla amehlo okanye umlomo wakho, hlamba izandla zakho kwaye ufumane uncedo lwezonyango.

Asikuzingeli. Ityhefu yaso ikhona nje ukuze kungabikho nto isityayo. Okungakumbi malunga nokuhlala ukhuselekile

Phi emhlabeni?

IAfrikaIAsiyaIYurophuuMntla MelikauMzantsi MelikaIOstreliya neOceaniauLwandlekazi lwePasifikiuLwandlekazi lwaseIndiyauLwandle lwaseMzantsi ChinauLwandle lweAndamaniBhayi yaseBengal

Sikhulu kangakanani?

Side kangakanani?

Mangrove horseshoe crab malunga ne-40 cm ubude (1,3 ft)Ibhanana malunga ne-18 cm (7,1 in)Ikati yasekhaya malunga ne-50 cm (1,6 ft)
ubude obulingana neebhanana eziyi-2 zilandelelanaubude obulingana neebhloko zokudlala zokwakha eziyi-12 zilandelelana

U-Mangrove horseshoe crab mkhulu kangakanani xa uthelekisa NAWE?

Zizibalo nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwa naphi na.

Sikhawuleza kangakanani?

kufanelekile ukwazi

Iinyaniso

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

Umqhekezi weentsomi

Intsomi: All horseshoe crabs are safe to eat.

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

Kwiingcali zetyhefu

Igama lenzululwazi
Carcinoscorpius rotundicauda
Iqela
Ezinye izilwanyana ezityhefayo
Usapho
Limulidae2
Ucwangco
Xiphosurida
Amazwekazi
uLwandlekazi lwaseIndiya, uLwandlekazi lwePasifiki, uLwandle lwaseMzantsi China, uLwandle lweAndaman, iBhayi yaseBengal, Iilwandlekazi
Iintsana
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
Ingozi ebantwini
4 / 5: Siyingozi kakhulu3

Apho iinyaniso zivela khona

  1. Mangrove horseshoe crab (Wikipedia (CC BY-SA 4.0))
  2. Carcinoscorpius rotundicauda (iNaturalist): amagama nokuhlelwa.
  3. Venom Wiki: inqanaba lengozi, ubungakanani obuqhelekileyo noqikelelo lwesantya zezethu. Bona indlela esizifumana ngayo: Indlela esilinganisa ngayo ingozi.

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