Tsela ea ho phela litlhapi tsa salmon

Salmon ke lelapa feela suborder Salmoniformes. Har'a bona ka bobeli metsi a hloekileng e le ho buisana le maikutlo a. Tsena e atileng ka ho fetisisa ke ena: litlhapi tsa salmon, Chum litlhapi tsa salmon, pinki litlhapi tsa salmon, coho, sockeye, chinook litlhapi tsa salmon, tsa whitefish, sootho trout, Grayling, Cisco, molapo trout, litlhapi tsa salmon le folaxe. Ho fetisisa ea litlhapi tsena o bitsoa lebitso la sehlopha: trout le litlhapi tsa salmon.

hlahang ho yona

Salmon tlhapi hlaha ka bang limilione tse 145 tse fetileng. Sebopeho le foromo, ba tšoana haholo le Clupeiformes, 'me esita le kopana le tsona ka bang classifications. Empa litlhapi tsa salmon e ka habonolo khetholloa ka mola o hantle-huleloa ka lehlakoreng le kutu. The karohano tsa malapa a ka mefuta ea kajeno e hlahile lilemo tse milione 62-25 fetileng.

makgetheng ikhethang

Fish tsa lelapa litlhapi tsa salmon e ka ba le e-ba bolelele 'mele tswa di emetse disentimitara tse seng kae (mohlala, tsa whitefish) ho limithara tse peli,' me boima ba 'mele ea bona e ka ba ho fihlela ho mashome a supileng kilogerama (trout, litlhapi tsa salmon, Chinook litlhapi tsa salmon).

Tlaleho e feletseng bakeng sa boholo ba trout ka. tlhapi ena ea lelapa litlhapi tsa salmon e ka phela lilemo tse fetang mashome a mahlano, ba le boima ba 'mele oa ka dikilogeramo lekholo, e-ba bolelele ba limithara tse fetang tse peli le halofo. 'Mele - nako e telele le e moqotetsane, sekala potoloha koaheloa.

litlhapi tsa salmon kaofela ba na le e le 'ngoe dorsal pop lady le mafura a le mong, eo e leng ka mor'a bona.

ho ikatisa

Ba phela ka mefuta e meng ka fihla lilemo tse leshome le metso e mehlano.

Ba ka feela ikatisa ka metsi a hloekileng. Leha ho le joalo, mefuta e meng ea ho lula ha ka ho sa feleng ka matša, empa boholo ba bona ba hlaha ho spawn ka saltwater ka 'mele metsi a hloekileng. Hangata ka ho fetisisa ba ho khutlela sebaka se le seng moo ba ileng ba tsoaloa. E ntse e le e sa tsejoeng hantle hore na ba fumana noka ea habo bona. Mohlomong, bakeng sa lihloliloeng tsa leholimo le lihlopha tsa linaleli e khanyang, kapa tatso ea metsi 'me likarolo botle ka ho fetisisa ea ho hlophisoa lona.

Nakong spawning litlhapi tsa salmon li fetola sebopeho sa eona 'me' mala (beha "lenyalo liaparo").

spawning

Joalokaha ho se ho boletsoe, litlhapi tsa salmon ho ikatisa le hlaha feela ka metsi a hloekileng - ka melapo, linōka kapa matša. Sena ke ka ntlha ya go ha e le hantle hore baholo-holo ba bona ba ne ba metsi a hloekileng, 'me feela ba bang ba bana ba bona ba bile teng ba ka tlhapi anadromous - sena ke Atlantic le la Pacific-salmon.

mefuta fetisisa spawn hang feela bophelong, 'me joale shoa. Ho ke tloaelehileng tse ngata bakeng sa Pacific litlhapi tsa salmon, empa Atlantic ka spawn ho fihlela ho ka makhetlo a mane.

Pele tshebetso ena litlhapi tsa salmon haholo fetola bobeli kwa le mo lekgotleng. Barbotage tsa silevera fetoha khubelu-e ntšo, ba batona ba ka linako tse ling a ka hlaha hump, meno ba kholoanyane. Empa hoo e ka bang tsohle le litho tse ka hare di tlotlolotsoe, nama e ba tlaase ho moo rekere 'me ka hona tlase tsa bohlokoa.

sebaka sa bolulo o

Ha e le hantle, litlhapi tsa salmon phela ka Leboea ea Lefatše. Ba atileng ka ho fetisisa karolong e ka leboea Asia, Europe, Amerika Leboea hammoho le lithabeng tsa Afrika Leboea. Ka ho Southern ea Lefatše, ka tikoloho ea bona ea tlhaho e lelapa le sieo, empa ka ba bang ba libaka tse ba artificially acclimated le hlahileng.

khoebo ea

nama bona e na le tatso e ikhethang le e ruile haholo ka limatlafatsi tse ngata, e le mefuta eohle ea litlhapi tsa salmon ke mefuta e korotsoeng. Ba fana ka tšoasa ba pota tharo etsang liphesente tse tsohle ntšitsoeng tlhapi metsing.