Fasali da mazauninsu
Abu na farko da ya kama maka ido shine bayyanar: yana da fadi, ina tsammanin da yawa sun gani ɓata cikin hoto, wannan saboda gaskiyar cewa ita mazaunin ƙasan ce. Kifin ba shi da irin wannan kallon na asali tun daga haihuwa, toyarsa daidai take da sauran kifin na yau da kullun, kuma yayin da suka girma sai su fara kama da manya.
Idanuwansu sun fara zama a gefen jikin, sannan ido daya - dama ko hagu, a hankali zai wuce zuwa wancan bangaren da ke gabansa, kuma gefen da idanun biyu suka rage ya zama "saman" kifin, dayan kuma shi ne ciki, wanda ke zama haske da m, don haka kifi yawo koyaushe zane-zane tare da tushe.
Zai iya rayuwa a zurfin har zuwa 200 m, amma mafi kyawun zurfin don shine 10-15 m. Yanayin wannan kifin yana da fadi sosai, saboda akwai masu ruwa iri daban-daban - wadanda ke rayuwa a tekunan tekuna:
- ruwan teku,
- turbot,
- baƙar teku mai yawo,
- dab;
- da mazaunan kogi - ruwan da yake kwarara.
Kifi yana yawo a cikin teku da kogi basu da banbanci sosai a zahiri, suna iya banbanci kawai a cikin girma, 'yan uwan teku sun kai manyan girma. Akwai sanannen lamari lokacin da masu jirgi suka kama katuwar ruwa mai nauyin kilogiram 100 kuma kimanin awo biyu ne.
Hakanan wuraren zama daban-daban, ana samun teku mafi yawa a cikin yanayin sauyin yanayi, Tekun Atlantika, kuma ana samunsu a Tekun Arewa, Fari, Baƙi da Fari. Har ila yau, kogin yana zaune a cikin teku, amma yana iya iyo a can cikin yankin kogunan ruwa, ana samunsa a Tekun Bahar Rum, a cikin Bahar Maliya da kuma a cikin kogunan da suke tare da su.
Hakanan ana samun sa a cikin titin Kogin Yenisei. Hakanan akwai nau'ikan daban - bahar na Bahar Maliya, wanda masunta 'yan kasuwa ke daraja shi sosai, yana da irin wannan kwaikwayon, yana haifar da salon yashi da farauta.
Hali da salon rayuwa
Kamar yadda aka ambata a sama kifi yawo a ƙasan da ke tsara rayuwarta. Kodayake bisa ga dabi'unta kwalliyar ruwa kifin teku ce kuma mai farauta, amma wannan ba ya tilasta mata yin aiki, ya fi son farauta cikin kwanto.
A cikin hoton, ana lulluɓi abin hawa a tekun
Suna kwance marasa motsi, idan ya cancanta, suna shiga cikin rairayi da ƙasa, gurnani cikin motsi mara motsi yana haifar da damuwa kuma ya kumbura ƙasan da ke kusa da su, sa'annan ya kwanta cikin rami kuma ƙasar da aka daidaita ta rufe jikinta.
Amma wannan ba duk abin da kifi zai iya yi wa kyanwa bane - Jikinta yana da tsari a bangaren gani, wanda zai iya canzawa don dacewa da muhallin, wanda hakan ya sanya ba a iya ganinsa. Ana kiran wannan damar mimicry a cikin dukkan halittu, amma kowane irin kangin bayi na iya amfani dashi, makauniyar kifi basa iya canza launi.
Idan akwai wata barazana ko haɗari, sai yawo ya tashi daga ƙasa sosai, ya juye a gefenta kuma tare da kaifin motsi yana shawagi daga yankin aminci, sannan ya sake kwanciya a gefen makafi ya ɓuya
A cikin hoton, kogin yana yawo
Abinci
A kan "tebur" na masu yawo akwai '' jita-jita '' iri-iri, abincinsa ya sha bamban: plankton, ƙaramar mollusks, tsutsotsi, da crustaceans da crustaceans. Hakanan zata iya cin ciyawa da ƙananan kifi - misali, capelin, idan sun yi iyo sosai kusa da wurin da ta ɓoye, kodayake ba ta son kifaye da kifayen da ke cin karensu ba babbaka su bar matsuguninta, don kada ita kanta ta zama abincin rana. Ya fi son binne kansa a cikin ƙasa mai yashi, inda kuma za ta iya samo wa kanta abinci, haƙoransa sun dace da wannan.
Sake haifuwa da tsawon rai
Saboda bambancin nau'ikan halittu da mahalli mai fa'ida, yawon shakatawa kuma yana faruwa a cikin wani lokaci mai mahimmanci, yana kama kusan dukkanin yanayi. Ana iya sake haifuwa daga Mayu har zuwa hunturu, kuma wasu jinsunan masu yawo suna bazuwa a karkashin kankara. Kowane ƙaramin yanki na masu fadowa yana da yanayi na musamman na lokacin.
A cikin hoton, kifin da ke yawo a teku
Hanyar rayuwa tana sa masu yawo su zama masu kadaici, saboda ya fi sauki a samo wa kansa abinci, amma idan lokacin haifuwa ya zo, sai jinsuna daban-daban su taru su yi bahaya. Wannan yana haifar da ƙetare nau'ikan jinsuna.
Fatawoyin ya kai shekarun balaga da shekara 3 - 4, jinsuna daban-daban suna iya kwanciya daga ƙwai miliyan 100 zuwa 13. Matsakaicin girman su kusan milimita ɗaya a diamita, amma wataƙila ɗaya da rabi.
Lokacin shiryawa don ci gaban ƙwai ya dogara da yanayin yanayin ƙasa da yanayin yanayi: a cikin yanayi mai zafi tare da yanayin zafi mai yawa, ci gaban amfrayo na iya faruwa a rana ɗaya, a arewacin latitude, shiryawa na iya ɗaukar kimanin watanni 2 da rabi.
Lokacin da qwai suke cikin ninkaya kyauta a cikin zurfin ruwa, sun zama cikakke bayyane, amma yayin da suke nitsewa zuwa kasa, sai su fara canzawa. Metamorphosis yana canza kamannin su - an juya fins, anal da dorsal zuwa gefe, sauran sassan jiki suna fuskantar canje-canje iri ɗaya.
Soya da ke fitowa a hankali suna fara neman abinci, a matakin farko suna ciyarwa a kan zooplankton, yayin da abincinsu ya ƙaru, bayyanar na fuskantar ƙarin canje-canje - idon gefen hagu yana motsawa zuwa gefen dama, kuma gefen hagu ya zama ƙasa.
Wasu lokuta bangarorin na iya samar da wata hanyar ta daban, wanda shine dalilin da ya sa masana ilimin kimiya ba za su iya amsawa ba, amma an lura cewa irin wannan kaucewa daga al'ada yakan faru ne a cikin kwararar kogin.
Tsawon rayuwar mata na iya kaiwa shekaru 30 kadan kadan, yayin da maza ke da shekaru 20-25. Kammalawa kwatankwacin kwata-kwata yana da kyau a lura da irin babbar hanyar cigaban cigaban wannan kifin da ya wuce, ya koyi buyayyar ganuwa a kasa, rayuwa a yanayi daban-daban kuma ya hayayyafa.
Ba za ku gani ba kifi mai gudu, tunda ba zai yuwu a rude shi da kowa ba. Idan ka tambayi wani wane irin kifi ne mai yawo, to kai tsaye zaka sami amsa - lebur, Vedic shine fasalin sa na musamman. Dukkanin nau'ikan nau'ikan sun kasu zuwa iyalai 6, wadanda akasarinsu masu ruwa ne, wadanda aka kama kamannunsu a tekun Pacific da Atlantic Ocean.
Yawan kamun kifin yawon shakatawa na shakatawa a cikin Baƙin Baƙi, Fari, Bahar Rum da kuma Tekun Baltic. Kwanan nan, buƙata ta ƙaura ta karu a Amurka. A gabar Bahar Maliya, yawan wannan kifin, saboda yawan kamun kifi, wanda bukatar Turkawa ta kai shi, suka fada cikin lalacewa.
