homo ergaster

fuskar homo ergaster

A cikin kakannin ɗan adam muna da homo ergaster. Wannan hominid ne wanda ya bayyana a nahiyar Afirka kimanin shekaru miliyan 2 da suka gabata. Tunda aka gano ragowar wadannan mutane, an yi babban rikici tsakanin masana. Wasu sunyi la'akari da cewa wannan nau'in tare da Homo erectus jinsinsu daya ne, yayin da wasu masana ke ikirarin cewa jinsinsu daban ne.

A cikin wannan labarin zamu gaya muku duk halaye, asali da kuma sha'awar homo ergaster.

Babban fasali

homo ergaster

Ka'idar da ta wanzu a yau ita ce cewa wannan jinsin mutum shine kakanninsa kai tsaye na Homo erectus. An dauke shi azaman farkon hominid wanda zai iya barin nahiyar Afirka. Gwajin jikin da wannan jinsin yake dashi yana wakiltar tsalle-tsalle ne akan sauran jinsunan da suka gabata. Ta wannan hanyar, muna haskaka tsayi wanda zai iya kaiwa kusan mita 1.8. Kamar yadda yake tare da sauran nau'ikan, wannan yana fice musamman don samun babban ƙarfin kwanya. Yana da wannan ikon fiye da na kakanninsa. Saboda wannan dalili, marubuta da yawa suna la'akari da cewa yawan cin naman yana bayanin karuwar wannan karfin jikin.

Fassara, homo ergaster yana nufin mutum mai aiki. Wannan nau'ikan ya kawo cigaba mai yawa game da karin kayan aiki da kayan aikinta sun fara zama masu rikitarwa. Ta hanyar samun wadatattun kayan aikin nan, zai yiwu a fifita dabarun farauta da sauran ayyukan zamantakewar.

Karatuttukan da aka gudanar akan wannan hominid din suna nufin masana zasu iya daukar sa a matsayin magajin Homo habilis. A wannan bangaren, wasu mawallafa basu yarda da wannan ba kuma babu cikakkiyar yarjejeniya. Akwai masanan burbushin halittu da yawa da suke tunanin cewa zai iya kasancewa jinsi daya ne. Abubuwan da suka rage na ƙwanƙwan kan mata da yawa ana yin su ne kimanin shekaru miliyan 1.75.

Ofaya daga cikin fitattun abubuwan da aka gano shine na shekarar 1984. An gano kwarangwal ɗin wani yaro ɗan shekara 11 kuma an ba shi damar nazarin ilimin jikinsa. Daga cikin siffofin da suka fi fice shi ne tsayinsa. Ya yi tsayin mita 1.6 kusa da ranar mutuwarsa, don haka zai iya kaiwa mita 1.8. Karfin kwanyar ya kai kimanin santimita 880 kuma jikinsa yana da tsari na duk ƙasusuwa kwatankwacin na ɗan adam na yanzu.

Saduwa da yanayin ƙasa na homo ergaster

Homo erectus

Wannan hominid din a lokacin zamanin tsakiyar Pleistocene kimanin shekaru miliyan 1.9 da suka gabata. Adadin da aka samo ya nuna cewa asalin mazauninsu inda rana da rayuwa suka bunkasa shine a Habasha, Tanzania, Kenya da Eritrea. A duk wannan yankin yanayin da ke akwai bai da yawa kuma fari ya ɗauki kusan shekaru 100.000.

Wasu masana sun yarda cewa homo ergaster shi ne farkon hominid wanda zai iya barin nahiyar Afirka. Godiya ga wannan ƙaura, ya sami damar daidaitawa zuwa wasu yankuna na duniyar duniyar wanda wasu halaye na yanayi, ciyayi da dabbobi suka fi yawa. Kafin barin yankin na Afirka, ya fadada cikin sauran wannan yankin, yana yin tsalle zuwa Gabas ta Tsakiya Asiya tsakanin kimanin shekaru miliyan 1.8 da 1.4 da suka gabata. An sani cewa ta zo ne don mamaye yankuna na Caucasus. An sami wasu ragowar a cikin Spain da Italiya daga kimanin shekaru miliyan 1.4 da suka gabata.

Akwai masanan kimiyya da yawa da suke da'awar cewa nan da nan ta ba da shi Homo erectus kamar yadda magabata suka yi. Wasu masana kimiyya suna da'awar cewa jinsinsu ɗaya ne wanda ya banbanta a yanayin yanayin su. A fagen ilimin halittar gado mun sami bambancin kwayoyin halitta dangane da yanayin muhalli. Idan wani jinsi ya bunkasa a wani yanayi na daban da alama zai iya haifar da wasu halaye daban-daban na juyin halitta. Koyaya, wannan baya nufin cewa jinsin ya banbanta, amma yana canzawa ne saboda wasu jerin abubuwan sauyawa.

Halaye na zahiri na homo ergaster

gadon homo ergaster

Za mu ga menene halayen jikin wannan ɗan adam. Kokon kansa yana da visor mai ban mamaki. Yankin gira ya kasance ya yi ƙanƙanta sosai fiye da na kakannin, duk da cewa ya ɗan fi na ɗan adam na yanzu girma. Nauyin da ya sauka ya kasance tsakanin kilogram 52 zuwa 68 kuma sun kasance masu ƙafa biyu. Legsafafunsa sun daɗe kuma babu wata alama ta alama ta jima'i. Wannan yana bayanin cewa babu wani banbancin halitta tsakanin maza da mata. Tsakanin su zasu iya yin kusan ayyuka iri ɗaya ba tare da la'akari da jinsi ba.

Bayyanar fuskar ya kasance alama ce ta hanci da ke fitowa da kuma muƙamuƙi da haƙori ƙanana da na Homo habilis. Ci gaban kwakwalwa ya yi rura wutar ta hanyar sauye sauyen abinci, kuma kirjinsa ya rage zuwa ga kafadunsa, yayin da kasusuwa cinyarsa suka yi tsawo.

Sauran fannoni na zahiri waɗanda suka haifar da canji mai mahimmanci a cikin hanyar daidaita yanayin zafin ciki. Kuma shine zai iya haifar da gumi kuma ya sanya shi rasa gashin jiki a cikin matsakaici da kuma dogon lokaci. Gashin kai ya bayyana a huhu ya ci gaba. Dole ne a yi la'akari da cewa wannan ɗan adam yana daɗa ɗaukar nauyin aiwatar da wasu rikitarwa, don haka yana buƙatar ƙarin ƙarfi da iskar oxygen don iya aiwatar da su.

Numfashi ya daina zama kawai na baka sannan kuma ya fara numfashi ta hanci. Wannan shine yadda suka sami damar rayuwa a cikin savannah a buɗe inda ƙarancin motsi ya kasance mai mahimmanci don tserewa daga maharan da farautar abincinsu.

Halayyar

Masana da yawa sun bayyana cewa daga cikin halayen homo ergaster babu sauran amfani da bishiyoyi don motsawa. Wannan shine yadda ya sami damar watsi da yanayin tsoffin kakanninsa gaba ɗaya kuma ya rayu a ƙasa kawai. Sun fi dacewa da hominids kuma aikin jikinsu ya dace da yanayin da suke rayuwa. Zama a cikin savannah, ba shi da inganci sosai don motsawa daga bishiyoyi. Sunyi tafiya irin ta dan Adam.

Idan muka je bangaren zamantakewa, sun kulla alaka mai rikitarwa a cikin al'ummu. Yaren baka ya bayyana duk da cewa ba dukkanin masana kimiyya suka yarda da wannan ba.

Ina fatan cewa tare da wannan bayanin zaku iya sani game da homo ergaster da halayensu.


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