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Spotted ratfish

Hydrolagus colliei

Kuhusu jina: The genus name Hydrolagus comes from Greek words meaning water and hare. The species name honours Alexander Collie, a ship's surgeon and early naturalist.1

Inauma tuUsiguseInauma, lakini haitakudhuru vibaya.

Samaki wenye sumu

Miiba yenye sumuHula: Nyama

Hatari kwa watu: InaumaInaweza kuuma sana, lakini karibu kamwe si jambo zito.

The spotted ratfish is a chimaera, a cartilage fish related to sharks and rays. It lives in the northeastern Pacific Ocean, and divers often see it at night in the Pacific Northwest. It gets its name from its pointed, rat-like tail.1

Anaishi

Northeastern Pacific Ocean, from Alaska to Baja California, plus an isolated population in the Gulf of California1

Bahari ya Pasifiki, Ghuba ya California

Nyumbani

It lives near the sea floor in sandy, muddy or rocky reef areas. Most live in deep water, but in the north they live closer to shore, and off California they can be found as shallow as 30 m. Divers meet it most often at night, and its leathery egg cases are laid on muddy or sandy bottoms, where divers sometimes mistake them for inanimate objects.1

Urefu

14 cm hadi 97 cm (5.5 in hadi 3.2 ft)1

Kasi ya juu

takriban km 15 kwa saa (maili 9.3 kwa saa)

Kuogelea, makadirio

Hula nini?

It swims slowly above the sea floor and finds food by smell, usually hunting at night when it moves into shallow water. It is especially drawn to crunchy prey such as crabs and clams, and also eats shrimp, worms, small fish, small crustaceans and sea stars.1

Picha ya Spotted ratfish — Spotted ratfish. Picha: Brian Gratwicke. CC BY 4.0, iNaturalist.

Jinsi ya kumtambua

Smooth, scaleless skin that is silvery-bronze, often with gold, blue and green shine1
Speckled white spots along the back1
Large, triangular pectoral fins that stick straight out from the sides, like airplane wings1
A pointed, rat-like tail that makes up almost half of its total length1
Large emerald green eyes and a duckbill-shaped snout1

Nguvu ya sumu

Miiba yenye sumu

Miiba mikali hubeba sumu. Kumkanyaga au kumshika kunauma.

Sumu yake hufanya nini?

The spine on the leading edge of its dorsal fin is grooved and connected to a venom gland at its base. The venom is mildly toxic. A sting from the spine causes a painful wound.1

Ana hatari gani kwa watu?

Hatari kwa watu: InaumaInaweza kuuma sana, lakini karibu kamwe si jambo zito.

It does not present a serious danger to humans, but its spines can cause painful wounds. Harbor seals have been known to die after swallowing spotted ratfish, when a spine pierced the stomach or esophagus.1

Hufanya nini akiogopa?

It usually keeps a safe distance from divers and is not aggressive, but it will defend its territory with the spine on its dorsal fin if it feels invaded.1

Miiba yake ikikuchoma

Weka jeraha kwenye maji ya moto, moto kiasi ambacho mtu anaweza kuvumilia bila kuungua (pima kwanza kwa mkono wako), kwa dakika 30 hadi 90. Tafuta msaada wa kitabibu, hasa kwa samaki-jiwe na taa.

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.
Miiba yake ikikuchoma: tulia, usitikisike, piga namba yako ya dharura (112, 000, 911) au nenda hospitali haraka. Kumbuka alivyoonekana, picha husaidia.

Hakuwindi wewe. Hutumia sumu yake kukamata chakula au kujilinda, na hupendelea zaidi kujificha. Zaidi kuhusu kukaa salama

Wapi duniani?

Afrika Asia Ulaya Amerika Kaskazini Amerika Kusini Australia na Oceania Bahari ya Pasifiki Ghuba ya California

Ana ukubwa gani?

Ana urefu gani?

urefu sawa na paka wa nyumbani 2 kutoka pua hadi mkiaurefu sawa na ndizi 5 zilizopangwa mstariangeweza kuogelea urefu wa bwawa kubwa (m 50) kwa sekunde 12

Spotted ratfish ana ukubwa gani ukilinganisha na WEWE?

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

Ana kasi gani?

Mwogeleaji wa Olimpiki takriban km 8 kwa saa (5 mph)

Spotted ratfish takriban km 15 kwa saa (9.3 mph)

Pomboo kwa kasi kamili takriban km 35 kwa saa (22 mph)

inafaa kujua

Ukweli

Adult males have a club-like cephalic clasper on the head, an organ not found in any other vertebrate, which they use to hold on to females during courtship.1

Its large eyes reflect light, much like the eyes of a cat.1

It swims with its large pectoral fins, and its barrel rolls and corkscrew turns have been described as aquatic flight.1

Its teeth are plate-shaped, mineralised and permanent, unlike the easily replaced teeth of sharks, and they help it grind prey.1

Its ampullary organs on the head detect electric fields, and they are homologous to the ampullae of Lorenzini found in sharks and rays.1

Its meat is not typically eaten by humans and it is not commercially caught.1

Kwa wataalamu wa sumu

Jina la kisayansi: Hydrolagus colliei
Kundi: Samaki wenye sumu
Familia: Chimaeridae2
Mpangilio: Chimaeriformes
Mabara: Bahari ya Pasifiki, Ghuba ya California, Bahari kuu
Watoto: Like some sharks, it lays eggs; the female releases up to two fertilised eggs every 10–14 days in spring to autumn, and development can take up to a year.1
Hatari kwa watu: 2 / 5: Inauma3

Ukweli unatoka wapi

Spotted ratfish (Wikipedia (CC BY-SA 4.0))
Hydrolagus colliei (iNaturalist): majina na uainishaji.
Venom Wiki: kiwango cha hatari, ukubwa wa kawaida na makadirio ya kasi ni yetu wenyewe. Ona jinsi tunavyovipata: Jinsi tunavyopima hatari.

Kila ukweli kwenye ukurasa huu una namba inayoonyesha chanzo chake. Kama tumekosea kitu, samahani, sisi ni wapenzi wa wanyama, si jarida la kisayansi. Tuambie kupitia [email protected] nasi tutarekebisha.

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