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Mangrove horseshoe crab

Carcinoscorpius rotundicauda
Oor die naam: 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
Kan doodmaakKan sonder behandeling doodmaak. As iemand dit eet, kry vinnig hulp.
Ander diere wat giftig is om aan te raak of te eet Giftig om te eetEet: VleisGiftig om aan te raak of te eet, nie deur 'n byt of steek nie
Gevaar vir mense: Baie gevaarlikDit kan 'n mens doodmaak wat geen behandeling kry nie.

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

Giftig deur 'n byt of steek, of giftig om aan te raak of te eet? Sommige diere spuit gif in met 'n byt of 'n steek. Ander is skadelik om aan te raak of te eet. Hierdie een is giftig om aan te raak of te eet.
Leef in
Tropical and brackish waters of India, Bangladesh and Southeast Asia. It may also occur in Sri Lanka, Myanmar and the Philippines.1
Indiese Oseaan, Stille Oseaan, Suid-Chinese See, Andamansee, Baai van Bengale
Tuis
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
Lengte
28 cm tot 40 cm (11 in tot 1,3 ft)1
Topspoed
omtrent 0,5 km/h (0,31 mph)
Swem, rowwe skatting
Wat eet dit?
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
Regtig waar!Foto van Mangrove horseshoe crab
Mangrove horseshoe crab. Foto: Amada44. CC BY 3.0, Wikimedia Commons.

Hoe om dit te herken

  • 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

Word dikwels verwar met: 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

Gifkrag

Giftig om te eet

Dit is net skadelik as iets dit eet.

Wat doen sy gif as jy daaraan raak of dit eet?

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

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: Baie gevaarlikDit kan 'n mens doodmaak wat geen behandeling kry nie.

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

As iemand daaraan geraak of dit geëet het

  • As iemand dit geëet het of simptome kry nadat hy dit geëet het: bel dadelik jou noodnommer of 'n gifsentrum.

Bel altyd eers jou noodnommer (112, 000, 911). Dit is algemene noodhulpraad, nie mediese advies nie. Noodhulp-basiese beginsels

Bly veilig

  • Moet nooit aan 'n wilde dier raak, dit vang of terg nie, selfs nie 'n kleintjie nie, en selfs nie as dit lyk of dit slaap of dood is nie.
  • Gee dit spasie. As jy een raakloop, bly kalm, stap stadig terug en laat dit sy eie pad gaan.
  • As jy daaraan geraak of dit geëet het: moenie jou oë of mond vryf nie, was jou hande en kry mediese hulp.

Dit is nie uit om jou te kry nie. Sy gif is net daar sodat niks dit eet nie. Meer oor veilig bly

Waar in die wêreld?

AfrikaAsiëEuropaNoord-AmerikaSuid-AmerikaAustralië & OseaniëStille OseaanIndiese OseaanSuid-Chinese SeeAndamanseeBaai van Bengale

Hoe groot is dit?

Hoe lank is dit?

Mangrove horseshoe crab omtrent 40 cm lank (1,3 ft)'n Piesang omtrent 18 cm (7,1 in)'n Huiskat omtrent 50 cm (1,6 ft)
so lank soos 2 piesangs punt aan puntso lank soos 12 speelgoed-boublokke in 'n ry

Hoe groot is Mangrove horseshoe crab in vergelyking met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of enige plek heen gestuur nie.

Hoe vinnig is dit?

die moeite werd om te weet

Feite

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

Mite-breker

Mite: All horseshoe crabs are safe to eat.

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

Vir gifkenners

Wetenskaplike naam
Carcinoscorpius rotundicauda
Groep
Ander diere wat giftig is om aan te raak of te eet
Familie
Limulidae2
Orde
Xiphosurida
Kontinente
Indiese Oseaan, Stille Oseaan, Suid-Chinese See, Andamansee, Baai van Bengale, Die oseane
Babas
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
Gevaar vir mense
4 / 5: Baie gevaarlik3

Waar die feite vandaan kom

  1. Mangrove horseshoe crab (Wikipedia (CC BY-SA 4.0))
  2. Carcinoscorpius rotundicauda (iNaturalist): name en klassifikasie.
  3. Venom Wiki: die gevaarvlak, die tipiese grootte en die spoedskatting is ons eie. Kyk hoe ons dit uitwerk: Hoe ons gevaar gradeer.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dierfanatici, nie 'n wetenskaplike joernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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Leef ook in: Indiese Oseaan

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