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Spiny dogfish

Squalus acanthias

Za dzinali: The species name acanthias refers to the shark's two spines.1

ImangopwetekaUsakhudzeImapweteka, koma sidzakuvulaza kwambiri.

Nsomba zaululu

Minga yaululuImadya: Nyama

Ngozi kwa anthu: YopwetekaIngathe kupweteka kwambiri, koma pafupifupi nthawi zonse si vuto lalikulu.

The spiny dogfish is a small, well-known shark with a sharp spine in front of each of its two back fins. It lives in shallow and offshore waters in most parts of the world, especially cooler seas, and it is hunted heavily for food. Its spines are its main form of defence.1

Imakhala ku

Shallow and offshore waters in most parts of the world, especially temperate seas; the northern Pacific population is now a separate species, the Pacific spiny dogfish1

Nyanja ya Atlantic, Nyanja ya Pacific, Nyanja ya Indian, Nyanja ya Mediterranean, Nyanja ya Kumwera (Southern Ocean), Nyanja ya Arctic, Antarctica, Nyanja ya Kumpoto (North Sea)

Kunyumba

It lives in shallow waters and further offshore, and is described as bottom-dwelling. It is commonly found at depths of about 50 to 149 m, and has been found deeper than 700 m. Commercial fishing brings it to fish markets, fish and chip shops and restaurants.1

Kutalika

60 cm mpaka 84 cm (2 ft mpaka 2,8 ft)1

Liwiro lapamwamba

pafupifupi 20 km/h (12 mph)

Kusambira, kuyerekeza chabe

Imadya chiyani?

It eats squid, fish, crab, jellyfish, sea cucumber, shrimp and other invertebrates. It hunts in packs that can number into the thousands and is described as an aggressive hunter.1

Chithunzi cha Spiny dogfish — Spiny dogfish. Chithunzi: Ecomare/Salko de Wolf. CC BY-SA 4.0, iNaturalist.

Mmene ungaizindikirire

Two spines, one in front of each dorsal (back) fin.1
No anal fin on the underside.1
White spots along its back.1
Greyish brown on both sexes, with countershading (darker on top, paler underneath).1
Asymmetrical tail lobes, forming a heterocercal tail (the upper lobe is larger).1

Nthawi zambiri imasokonezedwa ndi: Several shark species share the names dogfish, spurdog and piked dogfish. Spiny dogfish are told apart by having two spines, one in front of each dorsal fin, and no anal fin.1

Mphamvu ya ululu

Minga yaululu

Minga yakuthwa imanyamula ululu. Kuiponda kapena kuigwira kumapweteka.

Ululu wake umachita chiyani?

Its dorsal spines secrete a mild venom. The spines are driven into an attacker when the shark arches its back.1

Ndi yoopsa bwanji kwa anthu?

Ngozi kwa anthu: YopwetekaIngathe kupweteka kwambiri, koma pafupifupi nthawi zonse si vuto lalikulu.

Imachita chiyani ikachita mantha?

If it is caught, it arches its back to pierce its captor with the spines near its dorsal fins.1

Minga yake ikakubaya

Ika bala m'madzi otentha, otentha monga momwe munthuyo angapirire osapsa (yesa ndi dzanja lako), kwa mphindi 30 mpaka 90. Peza thandizo la dokotala, makamaka pa stonefish ndi stingray.

Nthawi zonse yamba wayimbira nambala yadzidzidzi (112, 000, 911). Awa ndi malangizo wamba a chithandizo choyamba, osati malangizo a dokotala. Zoyambira za chithandizo choyamba

Khala wotetezeka

Usakhudze, kugwira kapena kuseweretsa nyama yakuthengo, ngakhale yaing'ono, ndipo ngakhale ikuoneka ngati yagona kapena yafa.
Ipatse malo. Ukakumana nayo, khala chete, bwerera m'mbuyo pang'onopang'ono ndipo uilole ipite njira yake.
Minga yake ikakubaya: khala chete, usasunthe, imbira nambala yadzidzidzi (112, 000, 911) kapena pita kuchipatala mwachangu. Kumbukira m'mene inkaonekera, chithunzi chimathandiza.

Sikufuna kukuvulaza. Imagwiritsa ntchito ululu wake kugwira chakudya kapena kudziteteza, ndipo imakonda kwambiri kubisala. Zambiri za kukhala wotetezeka

Kuti padziko lapansi?

Africa Asia Ulaya Amereka ya Kumpoto Amereka ya Kumwera Australia ndi Oceania Antarctica Nyanja ya Pacific Nyanja ya Atlantic Nyanja ya Indian Nyanja ya Arctic Nyanja ya Kumwera (Southern Ocean)Nyanja ya Mediterranean Nyanja ya Kumpoto (North Sea)

Ndi yaikulu bwanji?

Ndi yaitali bwanji?

yaitali ngati amphaka apakhomo 1,5 mphuno ndi mchira motsatizanayaitali ngati nthochi 5 zoyalidwa motsatizanaingasambire kutalika kwa dziwe lalikulu losambira (50 m) m'masekondi 9

Spiny dogfish ndi yaikulu bwanji poyerekeza ndi IWE?

Ndi masamu chabe mu msakatuli wako. Palibe chomwe chimasungidwa kapena kutumizidwa kwina.

Imathamanga bwanji?

Wosambira wa Olympics pafupifupi 8 km/h (5 mph)

Spiny dogfish pafupifupi 20 km/h (12 mph)

Dolphin ikuthamanga ndi mphamvu zake zonse pafupifupi 35 km/h (22 mph)

zoyenera kudziwa

Mfundo

Dogfish sharks have one of the longest pregnancies of any organism, lasting around 18 to 24 months.1

Spiny dogfish hunt in packs that can range up into the thousands.1

In England, dogfish are sold in fish and chip shops as 'huss', and used to be sold as 'rock salmon' until that term was outlawed.1

Spiny dogfish are popular dissection specimens in high schools and universities because they are easy to get and have small, cartilaginous skulls.1

Squalus acanthias fossils from the Miocene of Denmark and the Netherlands date from about 11 million years ago.1

Males are identified by a pair of modified pelvic fins called claspers, which they use to transfer sperm to the female.1

Kuthetsa nthano zabodza

Nthano yabodza: All animals called dogfish or spurdog are the same species.

Zoona: These common names can apply to several species. Spiny dogfish are identified by their two spines, one in front of each dorsal fin, and by having no anal fin.1

Za akatswiri a ululu

Dzina la sayansi: Squalus acanthias
Gulu: Nsomba zaululu
Banja: Squalidae2
Dongosolo: Squaliformes
Makontinenti: Nyanja ya Atlantic, Nyanja ya Pacific, Nyanja ya Indian, Nyanja ya Mediterranean, Nyanja ya Kumwera (Southern Ocean), Nyanja ya Arctic, Antarctica, Nyanja ya Kumpoto (North Sea), Nyanja zikuluzikulu
Ana akhanda: The eggs develop inside the mother and the pups are born alive, with about 5 to 6 in each litter; gestation can last from around 18 to 24 months, one of the longest of any organism.1
Mmene ilili kuthengo: Vulnerable globally; Critically endangered in the Northeast Atlantic1
Ngozi kwa anthu: 2 / 5: Yopweteka3

Kumene mfundo zimachokera

Spiny dogfish (Wikipedia (CC BY-SA 4.0))
Squalus acanthias (iNaturalist): mayina ndi magulu a sayansi.
Venom Wiki: mlingo wa ngozi, kukula wamba ndi kuyerekeza kwa liwiro ndi zathu. Ona mmene timazipezera: Mmene timayezera ngozi.

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