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Eserese katuun nke Greater weever
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Greater weever

Trachinus draco
Gbasara aha ya: The word "weever" is thought to come from the Anglo-Saxon word "wivre", meaning "viper".1
Ọ chọrọ dọkịtaEmetụla ya akaỌ naghị egbukarị egbu, mana ọ bụrụ na mkpu ya dụrụ gị, gaa n'ebe dọkịta.
Azụ na-agba nsị Mkpu na-agba nsịNri ya: Anụ
Ihe ize ndụ nye mmadụ: Ọ dị njọỌ bụrụ na mkpu ya dụrụ gị, gaa n'ebe dọkịta. Ọnwụ anaghị adịkarị ma ọlị.

The greater weever is a small sea fish that buries itself in shallow sand along the eastern Atlantic coast and in the Mediterranean and Black Seas. Its spines carry a venom that causes intense pain, so it is one of the most dangerous fishes in the Mediterranean for swimmers.1

Ebe obibi
Eastern Atlantic from Norway to Morocco, plus the Mediterranean, Aegean and Black Seas1
Oké Osimiri Atlantik, Osimiri Mediterenian, Osimiri Ugwu (North Sea)
Ụlọ
It lives in water from shallow depths down to 150 m, mostly over muddy or sandy sea floors. In shallow water it hides in fine sand, where bathers may step on it or fall onto it, especially in summer.1
Ogologo
9.5 cm ruo 40 cm (3.7 in ruo 1.3 ft)1
Arọ
5.3 g ruo 1.7 kg (0.2 oz ruo 3.8 lb)1
Ọsọ kacha elu
ihe dị ka 6 km/h (3.7 mph)
Igwu mmiri, nchepụta
Gịnị ka ọ na-eri?
It is an ambush predator that waits buried in sand during the day, with only its eyes and the tip of its dorsal fin showing. It attacks prey that come close in a swift, sudden movement, mainly small fish, decapods and mysids.1
N'ezie!Foto Greater weever
Greater weever. Foto: Tomasz Sienicki [user: tsca, mail: tomasz.sienicki at gmail.com]. CC BY 1.0, Wikimedia Commons.

Otú ị ga-esi mata ya

  • Elongated, flattened body with a mouth that points upwards and a lower jaw longer than the upper jaw1
  • Large, flat head with the eyes sitting almost on top of it1
  • Greenish brown colour with several dark marks on the upper side of the head1
  • Yellowish brown flanks with bright blue and yellow broken stripes, plus oblique black stripes along the sides that look tiger-like1
  • Venomous spines on the first dorsal fin and on each gill cover1

Ike nsị

Mkpu na-agba nsị

Mkpu dị nkọ na-ebu nsị ahụ. Ịzọ ya ụkwụ ma ọ bụ ijide ya na-afụ ụfụ.

Gịnị ka nsị ọ na-agba na-eme?

The venom contains a large protein called Dracotoxin, which can be lethal in high enough doses. It damages cell membranes, and the sting is followed by a short period of tissue changes around the wound. The best-known effect is excruciating pain that begins shortly after the sting and can last from a few hours to days.1

Kedu otú o si dị egwu nye mmadụ?

Ihe ize ndụ nye mmadụ: Ọ dị njọỌ bụrụ na mkpu ya dụrụ gị, gaa n'ebe dọkịta. Ọnwụ anaghị adịkarị ma ọlị.

The most common incident happens when a bather steps, jumps or falls onto a buried greater weever in shallow water, especially in summer. Fishermen handling fish caught in nets are also at risk. The pain can reach 10 out of 10 on the numeric rating scale, and some stings have caused pain for months, though this is rare. Reported fatal accidents exist, but these are widely believed to be due to secondary infections and sepsis rather than the toxin itself.1

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 (jiri aka gị nwalee ya), ruo nkeji 30 ruo 90. Chọọ enyemaka ọgwụ, karịsịa maka azụ nkume (stonefish) na stingray.

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 AtlantikOsimiri MediterenianOsimiri Ugwu (North Sea)

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Greater weever ogologo ya dị ihe dị ka 40 cm (1.3 ft)Unere ihe dị ka 18 cm (7.1 in)Nwamba ụlọ ihe dị ka 50 cm (1.6 ft)

Kedu otú o si dị arọ?

dị arọ dị ka unere 14
dị ogologo dị ka blọk egwuregwu 12 n'ahịrịnwere ike igwu mmiri ogologo nnukwu ọdọ igwu mmiri (50 m) n'ime sekọnd 30

Kedu otú Greater weever si hà ma e jiri ya tụnyere GỊ?

Naanị mgbakọ na mwepụ n'ime browser gị. Ọ dịghị ihe echekwara ma ọ bụ ezigara ebe ọ bụla.

Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

Its venom glands sit in the skin, and the sting works through a groove along each spine that carries the venom into the wound.1

2

It is classed as one of the most venomous fishes in the Mediterranean.1

3

The record weight is 1.74 kg, for a specimen caught off La Gomera in the Canary Islands in 2005.1

4

Its diet changes with size: small mysids are the most common prey for fish under 20 cm, while cephalopods and fish make up a bigger share of the diet in larger fish.1

Onye na-ekpughe akụkọ ụgha

Akụkọ ụgha: A weever sting is often thought to be fatal because of the venom itself.

Eziokwu: Reported fatal accidents are widely believed to be caused by secondary infections and sepsis rather than the toxin itself.1

Maka ndị ọkachamara nsị

Aha sayensị
Trachinus draco
Otu
Azụ na-agba nsị
Ezinụlọ
Trachinidae2
Usoro
Perciformes
Kọntinent dị iche iche
Oké Osimiri Atlantik, Osimiri Mediterenian, Osimiri Ugwu (North Sea), Oké osimiri niile
Ụmụ ọhụrụ
It is egg-laying and releases its eggs into open water, where each egg is 4.8–6.8 mm across and hatches after about three months. It is not known to provide any parental care.1
Ihe ize ndụ nye mmadụ
3 / 5: Ọ dị njọ3

Ebe eziokwu ndị a si

  1. Greater weever (Wikipedia (CC BY-SA 4.0))
  2. Trachinus draco (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.

Akpị agụụ na-agụ! Venom Wiki bụ ọrụ otu onye: n'efu, na-enweghị mgbasa ozi na ndị na-esochi gị. Obere onyinye na-enyere aka idebe ya n'ịntanetị.Nye akpị nri

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