Tsarin rayuwa mai ban mamaki na kifin kifi

Salmon yana rayuwa a cikin teku lokacin da suka manyanta

Salmons sanannen kifi ne don yin abubuwa da yawa yayin da suke rayuwa mai ban sha'awa da ban mamaki. Kusan kowa ya taɓa ji shahararriyar tafiya ta salmon don samun damar hayayyafa. Wannan shine ya sanya wannan kifin ya zama na musamman da na musamman, tunda misali ne na juriya da azama da dabbobi zasu iya samu saboda dabi'unsu na haihuwa da rayuwa.

Shin kana son sanin cikakken bayani game da zagayen rayuwar kifi da kuma sha'awarka?

Tarihin kifin

Salmon ya wanzu a Duniya tun lokacin dinosaur

Salmons na cikin jinsin halittu Oncorhynchus kuma ga dangin salmonid. Su kifi ne mai lalacewa, wanda ke nufin hakan ci gaba a cikin yanayin ruwa sannan a rayu cikin ruwa mai kyau. Suna da ikon rayuwa a cikin nau'ikan haɗuwar saline. Ana samun zangonsa a arewacin Tekun Fasifik tare da wasu nau'ikan kusa da Tekun Mexico.

Ranar da kifin kifin farko ya bayyana a duniyar tamu ba a san shi ba tukuna, amma an fi sani ko ƙasa cewa suna cikin rukunin kifin teleost kuma waɗannan sun mamaye teku a lokacin Cretaceous. Wannan ya faro ne daga lokacin da dinosaur suka rayu kimanin shekaru miliyan 135 da suka gabata. Tun daga wannan lokacin, kifin salmon yana da tsarin rayuwa na musamman idan aka kwatanta shi da sauran kifin. A yayin wata doguwar tafiya ta shekaru miliyan 60, duk wayoyin salula sun bazu ko'ina cikin duniya kuma sun sha bamban da juna ta hanyar juyin halitta.

A yayin wannan tsarin juyin halittar, kifin salmon ya gwammace ya zauna a cikin ruwan sanyi da iska mai dauke da iska a arewacin duniya. Masana kimiyya sunyi ƙoƙari su fahimci dalilan da ke haifar da kifin kifi don yin hanyar su ta haihuwa, amma, har yanzu ba su iya yanke hukunci game da shi ba.

Tsarin rayuwa na kifin kifi

Haihuwar

Kifin kifin salmon yana kyankyashewa a cikin kogin idan kwai ya kyankyashe

Source: David Alvarez http://www.naturalezacantabrica.es/2012/01/

Salmon yana kyankyashe daga ƙwai a cikin kogunan ruwa. A yadda aka saba, lokacin kaka ne lokacin da mata da miji suke sanya kwayayen a cikin kogunan don su sa su a cikin gidan da aka gina da tsakuwa. Bayan 'yan watanni na shiryawa, kwan suka kyankyashe da kuma soya kifin kifin. Sun zauna na weeksan makwanni a tsakuwa inda suka sami wasu dabarun ninkaya. Lokacin da bazara ta zo kuma yanayin zafi ya tashi, yana taimakawa ga canjin yanayin muhalli wanda ya fi dacewa da koyon yatsun hannu, waɗanda ke barin tsakuwa kuma fara rayuwarsu mai zaman kanta.

Masana da yawa suna nazarin tsarin rayuwar kifin na kifin, kuma, fiye da duka, wannan matakin na rayuwarsu, tunda an yi ƙoƙari don bayanin yadda kifin ya san cewa dole ne su koma ga kogin mahaifiyarsu don haihuwa.

vida

Salmon na manya suna rayuwa a cikin teku

Lokacin da soyawar ta fi girma kuma ta kasance mai cin gashin kanta, suna iyo a bakin kogin har sai sun ɓoye a cikin teku. Da zarar sun isa can sai suyi iyo kuma suna yawo a cikin teku na tsawan lokaci dangane da kowane kifin kifin. A wannan lokacin suna samun abinci da wurin zama. Da zarar lokaci ya wuce kuma yayin da suka girma, kifin kifin yakan yi kokarin komawa wurin haihuwa don haihuwa da haifuwa. Tabbas, wannan hanyar a fili take tessitura ce. Ka yi tunanin cewa dole ne su yi iyo a kan rafin da ke cikin kogin da aka haife su. Babu shakka ba duk kifin kifi ne yake tsira wa labarin ba. Hanyar zuwa ga kogin mahaifiyarsa cike take da matsaloli da haɗari.

Komawa ga kogin uwar

Salmon ya koma zuwa ga kogin mahaifiyarsu don haihuwa da haifuwa

Lokacin da suka isa bakin kogin uwar sai su fara hawa rukuni-rukuni idan ruwan ba ya da matukar tashin hankali kuma a yanayin babban kogi wasu nau'in suna yin sa a jere. A lokacin tafiya zuwa kogin dole ne su guji abubuwan da ke cikin ruwa, manyan duwatsu, beyar da sauran dabbobin daji, bishiyoyin da ke tsakiyar kogin, gurɓatarwar da kwantena da robobi, kuma duk wannan ya shafi na yanzu. Duk wadannan cikas din suna haifar da mummunan yanayi a jikin kifin kifin da ke sa bayyanar su ta lalace idan aka kwatanta da lokacin da suke rayuwa a tekuna.

Sake bugun

Salmons suna kiwo a cikin kogin da aka haife su

Da zarar sun sami damar hawan kogin duka, sai su isa yankin da aka haife su. Yanki daya ne da suka haihu da kuma kakanninsu. A wannan yankin suna ci gaba da rayuwa har sai sun balaga da haihuwa. Da zarar sun shirya yin jima’i don haihuwa, sai matar ta yi iyo kusa da ƙasan kogunan don gina tsakuwa inda za su sa ƙwai. Yayin da mace ke gina gida, sai namijin ya kori sauran mazan da ke sha'awar mace.

Mace tana amfani da wutsiyarta don ta kaɗa ta kuma gina gida tsakanin santimita 40 zuwa 50. Wasu lokuta, yayin da sauran mazan ke kokarin shiga gidan da mace ke ginawa, mace na yin karfi don korar masu kutse. Wannan ginin gida yana ɗaukar hoursan awanni, tunda mace tana zaba kuma tana haɗuwa da duwatsun da suke ganin sun fi dacewa don samar da "shimfiɗar jariri" inda za'a haifi sabon kifin. Kari akan haka, zasu iya gina gida har sau biyar yayin duba ingancinsu da zurfin su.

Da zarar sun gina gidajan, mace ta ba da damar namiji ya tsaya kusa da ita ta yadda, a lokaci guda, mace ta saki ƙwai kuma namiji maniyin. Ta wannan hanyar hadi ke faruwa. Lokacin da ruwan ya fito daga ruwan kwayar, macen na kallon kwayayen a ƙasan gida kuma ta hanzarta ta rufe su yayin da take yin wutsiyar wutsiyar ta kamar fankar. Ana yin wannan motsi ba tare da taɓa kowane dutse ba kuma ana yin sa ne don ƙirƙirar ƙwanƙwasa wanda ke motsa ƙwai a cikin tsakuwa don kauce wa lalacewa kuma cewa suna da kariya sosai.

Yayin da aikin ya ƙare a cikin gida ɗaya, sai ya gina na gaba. A kowane daya yana ajiye tsakanin kwai 500 zuwa 1000. A cikin kwanaki masu zuwa yana rufe su don kare su har sai ya mutu.

Yana da matukar mahimmanci cewa wannan zangon ƙarshe ya tafi daidai don sabon soya yayi girma. Wannan shine dalilin da yasa gurɓataccen yanayi da canjin ɗan adam a cikin rafuka abubuwa ne da suke wahalar da kifin salmon sosai. Kamar yadda aka ambata a baya, masana kimiyya suna neman dalilan da yasa kifin kifi kawai ke tsiro a cikin kogin mahaifiyarsu ba wani wuri ba. Har zuwa kwanan wata ba a sami shaida ba dalilin. Ana tsammanin kawai suna da masu karɓa a cikin tsarin juyayi waɗanda suke amfani da yanayin muhalli inda suka kasance a matsayin "abubuwan tunawa" don komawa can don haihuwar tsara masu zuwa.


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  1.   HERIBERTO GRAHAM MORA m

    Allah yaci gaba da sanya muku albarka, ingantaccen ɗaba'a, kimiyya da kwatancin ALHERI.

  2.   Bruno m

    Ya haifar da motsin rai da yawa a cikina. Godiya

  3.   Cristina m

    Yayi bayani sosai game da rayuwar kifin. Godiya.

  4.   lorraine garcia m

    Zaman rayuwar waɗannan kifaye abin birgewa ne, wani abu ne mai ban mamaki, yana kiran hankalina da yawa yayin da suke tuna da kyau daga inda suka fito kuma dole ne su dawo daidai da abin da ya faru da mutane waɗanda muka zo daga sama kuma muna dawowa lokacin da muka mutu mabuɗin shine yadda muke dawowa cikin tsabta ko datti