Salmon shark - nsomba yochokera ku herring shark banja

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Salmon shark (Lamna ditropis) ndi gulu la nsomba zamatenda, banja la herring shark.

Nsombazi zimafalikira.

Nsomba za Salmon zimafalikira kwambiri m'mbali zonse za m'mphepete mwa nyanja komanso m'nyanja za Pacific zomwe zimapezeka m'mbali mwa nyanja ya Pacific Pacific, yomwe ili pakati pa 10 ° N. sh. ndi 70 ° kumpoto. Mtunduwu umaphatikizapo Nyanja ya Bering, Nyanja ya Okhotsk ndi Nyanja ya Japan, komanso imachokera ku Gulf of Alaska kupita ku Southern California. Nsomba za Salmon nthawi zambiri zimapezeka mumtundu wa 35 ° N. - 65 ° N. m'madzi akumadzulo a Pacific Ocean komanso kuyambira 30 ° N. mpaka 65 ° N. kum'mawa.

Malo okhala nsomba za shaki.

Nsomba za Salmon zimakonda kupezeka panyanja komanso zimakhala m'madzi am'mphepete mwa nyanja. Nthawi zambiri amakhala kumtunda kwa madera akutali, komanso amasambira m'madzi akuya am'madera ofunda akumwera pamtunda osachepera 150 mita. Mitunduyi imakonda kutentha kwamadzi pakati pa 2 ° C mpaka 24 ° C.

Zizindikiro zakunja kwa nsomba ya salmon.

Nsomba zazikulu za salmon zimalemera pafupifupi 220 kg. Shark kumpoto chakum'mawa kwa Pacific ndi olemera komanso otalikirapo kuposa nsomba za kumadzulo. Kutalika kwa thupi kumasiyanasiyana kukula kwake kuyambira 180 mpaka 210 cm.

Kutentha kwa thupi kwa nsomba zambiri kumakhalabe kofanana ndi kutentha kwa madzi ozungulira.

Nsomba za Salmon zimatha kutentha thupi kwambiri kuposa chilengedwe (mpaka 16 ° C). Mitunduyi imakhala ndi thupi lolemera, lopindika komanso lokhala ndi mphuno yayifupi. Gill slits ndi yayitali. Kutsegula pakamwa ndikokulungika komanso kuzungulira. Pa nsagwada yakumtunda, pali mano 28 mpaka 30, nsagwada zapansi - 26 27, mano akulu pang'ono pang'ono okhala ndi mano ofananira nawo (ma tubercles ang'onoang'ono kapena "mano ang'onoang'ono") mbali zonse za dzino lililonse. Dorsal fin imakhala ndi mphindikati yayikulu kwambiri komanso yaying'ono kwambiri. Kumapeto kwa kumatako ndikochepa. Mapiko a caudal ali ndi mawonekedwe a kachigawo kakang'ono, momwe lobes ndi dorsal lobes pafupifupi ofanana kukula.

Zipsepera za pectoral zophatikizika ndizazikulu. Chosiyanitsa ndi kupezeka kwa keel pa caudal peduncle ndi keels zazifupi zazifupi pafupi ndi mchira. Mitundu yakumbuyo ndi kotumphuka ndi yakuda buluu mpaka imvi. Mimba ndi yoyera, ndipo nthawi zambiri imakhala ndi malo amdima osiyanasiyana kwa akulu. Pamaso pake pamtambo pamakhalanso mdima wandiweyani.

Kuswana nsomba za shaki.

Amuna amakhala pafupi ndi akazi, kuwagwira ndi zipsepse zamatumbo mukamakwatira. Kenako awiriawiri amasokonekera, ndipo nsombazo sizilumikizananso. Monga ma herring shark ena, ma ovary oyenera okha ndiomwe amagwira nsomba za salmon shark. Feteleza ndi yamkati, ndipo kukula kwa mazira kumachitika mkati mwa thupi la mkazi. Mitunduyi ndi ovoviviparous ndipo mazira omwe akutukuka amatetezedwa, mtundu uwu wamtsogolo umathandizira kuti mwana akhale ndi moyo.

Anawo nthawi zambiri amakhala ndi nsomba zazing'ono 4 mpaka 5 zazitali kuyambira 60 mpaka 65 cm.

Nsomba za Salmon m'madzi akumpoto zimabereka miyezi 9 m'dzinja, ndipo nsomba zakumwera zimabereka kumapeto kwa masika, koyambirira kwa chilimwe. Nsomba zazimayi zamchere ku Pacific Northwest zimaberekanso pachaka ndipo zimatulutsa pafupifupi 70 shark achichepere m'moyo wawo. Pomwe anthu kumpoto chakum'mawa kwa Pacific Ocean amabereka zaka ziwiri zilizonse. Amuna amatha kubereka patali pafupifupi pafupifupi masentimita 140 ndi zaka zisanu, pomwe akazi amapatsa ana kutalika kwa masentimita 170 ndi 180 ali ndi zaka 8-10. Kukula kwakukulu kwa nsomba zazimayi zazimayi kumatha kutalika pafupifupi 215, ndi amuna masentimita 190. Mwachilengedwe, nsomba za salmon zimakhala zaka 20 ndi 30. Mtundu uwu wa nsomba sunasungidweko m'mphepete mwa nyanja zazikulu, sizikudziwika kuti nsomba za salmon zimatha kukhala nthawi yayitali bwanji.

Khalidwe la Sharkon shark.

Nsomba za Salmon ndi nyama zomwe zilibe malo okhazikika kapena zimasamukira kukasaka nyama. Pali kusiyana kwakukulu pakati pa chiwerewere pamtundu uwu, womwe umawonedwa mu nsomba zomwe zimapezeka kumpoto kwa Pacific.

Anthu akumadzulo amalamulidwa ndi amuna, pomwe anthu akum'mawa amalamulidwa ndi akazi.

Kuphatikiza apo, pali kusiyana pakukula kwa thupi, komwe kumakulira kwambiri anthu akumwera, pomwe nsombazi zakumpoto ndizochepa kwambiri. Nsomba za salmon zimadziwika kuti zimasaka zokha kapena zimadyetsa m'magulu angapo a anthu, kuyambira 30 mpaka 40 shark. Amakhala osamukira kwakanthawi, amasuntha pambuyo pa nsomba zomwe amadyetsa. Palibe chidziwitso chokhudzana ndi maubwenzi apadera mu nsomba za salmon; Mitunduyi, monga nsomba zina zakutchire, imayang'ana mothandizidwa ndi zowonera, zowoneka bwino, zamankhwala, zamakina, komanso zomvera.

Salmon shark zakudya.

Zakudya za nsomba za salmon zimapangidwa kuchokera ku mitundu yosiyanasiyana ya nsomba, makamaka kuchokera ku Pacific saumoni. Nsombazi zimadyanso nsomba zam'madzi, Pacific hering'i, sardines, pollock, Pacific saury, mackerel, gobies ndi nsomba zina.

Udindo wa salmon shark.

Nsomba za Salmon zili pamwamba pa piramidi yachilengedwe m'nyanja zam'madzi, zomwe zimathandiza kuwongolera nsomba zomwe zimadya nyama komanso nyama zam'madzi. Nsomba zazing'ono za salmon kuyambira 70 mpaka 110 cm kutalika zimatengedwa ndi shark zokulirapo, kuphatikiza shark wabuluu ndi wamkulu woyera shark. Ndipo mwa nsomba zazikulu za salmon pali mdani m'modzi yekha yemwe amadziwika ndi odyetsawa - munthu. Achinyamata a salmon shark amadyetsa ndikukula m'madzi kumpoto kwa malire a subarctic, malowa amawoneka ngati mtundu wa "baby shark nursery". Kumeneko amapewa kugwidwa ndi nsombazi, zomwe sizisambira m'malo amenewa ndikusaka kumpoto kapena kumwera. Shark wachinyamata samasiyanitsa mitundu yakumtunda ndi kumunsi kwa thupi komanso malo akuda pamimba.

Kutanthauza kwa munthu.

Nsomba za Salmon ndi mitundu yamalonda, nyama zawo ndi mazira ndizofunika kwambiri ngati zakudya. Mitundu ya nsombazi nthawi zambiri imagwidwa ndi maukonde ngati kugwira kamodzi pogwira mitundu ina ya nsomba. Ku Japan, ziwalo zamkati mwa nsomba za salmon zimagwiritsidwa ntchito pa sashimi. Nsombazi zimagwidwa panthawi yosodza masewera komanso zosangalatsa za alendo.

Nsomba za Salmon zimaopsezedwa ndi usodzi wamalonda. Pa nthawi imodzimodziyo, nsomba zimakodwa m'ndende ndi maukonde, zikopa zimasiya mabala pa thupi.

Nsomba za Salmon ndizowopsa kwa anthu, ngakhale palibe zomwe zalembedwa pankhaniyi. Malipoti osatsimikizika a zamadyedwe amtunduwu kwa anthu mwina chifukwa chakusadziwika ndi mtundu wankhanza kwambiri monga white shark yayikulu.

Malo osungira nsomba za salmon shark.

Salmon shark pakadali pano yatchulidwa ngati nyama "yopanda chidziwitso" chololedwa kulowa nawo pa IUCN Red List. Kuchuluka kwa achinyamata komanso kubereka pang'onopang'ono kumapangitsa kuti mitundu iyi ikhale pachiwopsezo. Kuphatikiza apo, usodzi wa nsomba za salmon sulamulidwa m'madzi apadziko lonse lapansi, ndipo izi zikuwopseza kuchepa.

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Onerani kanemayo: Salmon Shark (November 2024).