A brief history of dogs - David Ian Howe

3,188,639 views ・ 2019-03-26

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Aleksandar Bošnjak Lektor: Ivana Krivokuća
00:07
Since their emergence over 200,000 years ago,
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Od kad su se pojavili pre više od 200 000 godina,
00:11
modern humans have established homes and communities all over the planet.
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moderni ljudi su osnivali domove i zajednice širom planete.
00:15
But they didn’t do it alone.
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Ali, oni to nisu radili sami.
00:17
Whatever corner of the globe you find homo sapiens in today,
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U kojoj god oblasti zemljine kugle danas nađete homo sapiensa,
00:21
you’re likely to find another species nearby:
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verovatno je da ćete naći i drugu vrstu u blizini:
00:24
Canis lupus familiaris.
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Canis lupus familiaris.
00:26
Whether they’re herding, hunting, sledding, or slouching
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Bilo da čuvaju stado, love, vuku sanke ili leškare,
00:30
the sheer variety of domestic dogs is staggering.
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sama raznolikost domaćih pasa je zapanjujuća.
00:34
But what makes the story of man’s best friend so surprising
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Ono što čini priču čovekovog najboljeg prijatelja toliko iznenađujućom
00:38
is that they all evolved from a creature
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je to što su svi oni evoluirali od stvorenja
00:40
often seen as one of our oldest rivals:
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za koje se često smatra da je naš najstariji protivnik:
00:43
Canis lupus, or the gray wolf.
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Canis lupus, ili sivi vuk.
00:47
When our Paleolithic ancestors first settled Eurasia roughly 100,000 years ago,
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Kad su naši preci iz doba paleolita
prvi put naselili Evroaziju pre oko 100 000 godina,
00:52
wolves were one of their main rivals at the top of the food chain.
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vukovi su bili njihovi glavni protivnici na vrhu lanca ishrane.
00:56
Able to exert over 300 lbs. of pressure in one bone-crushing bite
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Sposobni da izvrše pritisak od preko 136 kg u jednom ugrizu
01:01
and sniff out prey more than a mile away,
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i da nanjuše plen na kilometar i po i više,
01:04
these formidable predators didn’t have much competition.
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ovi strašni predatori nisu imali puno konkurencije.
01:08
Much like human hunter-gatherers,
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Poput ljudi lovaca-sakupljača,
01:09
they lived and hunted in complex social groups
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živeli su i lovili u kompleksnim društvenim grupama
01:12
consisting of a few nuclear families,
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koje su se sastojale od nekoliko nuklearnih porodica,
01:14
and used their social skills to cooperatively take down larger creatures.
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i koje su koristile društvene veštine da zajedno poraze veća stvorenja.
01:19
Using these group tactics,
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Koristeći ove grupne taktike,
01:21
they operated as effective persistence hunters,
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funkcionisali su kao efektivni istrajni lovci,
01:24
relying not on outrunning their prey,
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ne oslanjajući se na prestizanje svog plena,
01:26
but pursuing it to the point of exhaustion.
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nego na jurenje plena do trenutka njegove iscrpljenosti.
01:29
But when pitted against the similar strengths of their invasive new neighbors,
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Ali kad su se suprotstavili sličnoj snazi njihovog novog nasrtljivog suseda,
01:33
wolves found themselves at a crossroads.
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vukovi su morali da donesu odluku.
01:36
For most packs,
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Za većinu čopora,
01:37
these bourgeoning bipeds represented a serious threat to their territory.
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ovi napredni dvonogaši su predstavljali opasnu pretnju njihovoj teritoriji.
01:42
But for some wolves,
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Ali za neke vukove,
01:44
especially those without a pack,
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naročito one bez čopora,
01:46
human camps offered new opportunities.
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ljudski kampovi su nudili nove prilike.
01:49
Wolves that showed less aggression towards humans
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Vukovi koji su pokazali manje agresije prema ljudima
01:51
could come closer to their encampments,
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su mogli da priđu bliže njihovim logorima
01:53
feeding on leftovers.
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i da se hrane njihovim ostacima.
01:55
And as these more docile scavengers outlasted their aggressive brethren,
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A kako su ovi pitomiji lešinari nadživeli svoju agresivniju braću,
01:59
their genetic traits were passed on,
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njihova genetska svojstva su se prenosila,
02:02
gradually breeding tamer wolves in areas near human populations.
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i postepeno su se stvorili pitomiji vukovi u oblastima blizu ljudske populacije.
02:06
Over time humans found a multitude of uses for these docile wolves.
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Tokom vremena, ljudi su pronašli mnogo koristi za ove pitome vukove.
02:11
They helped to track and hunt prey,
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Pomagali su u praćenju i lovljenju plena,
02:13
and might have served as sentinels to guard camps
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i možda su služili kao čuvari logora
i upozoravali na neprijatelje koji bi se približavali.
02:16
and warn of approaching enemies.
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02:18
Their similar social structure made it easy to integrate with human families
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Njihova slična društvena struktura je olakšala integraciju sa ljudima
02:22
and learn to understand their commands.
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i razumevanje njihovih komandi.
02:24
Eventually they moved from the fringes of our communities into our homes,
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Na kraju su se preselili sa periferija naših zajednica u naše domove,
02:28
becoming humanity’s first domesticated animal.
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postavši prva čovekova pripitomljena životinja.
02:32
The earliest of these Proto-Dogs or Wolf-Dogs,
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Ovi najraniji prvobitni psi ili hibridi vuka i psa
02:35
seem to have appeared around 33,000 years ago,
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su se pojavili pre oko 33 000 godina,
02:39
and would not have looked all that different from their wild cousins.
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i nisu izgledali toliko drugačije od svojih divljih rođaka.
02:42
They were primarily distinguished by their smaller size
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Prvobitno su se razlikovali po svojoj manjoj veličini
02:45
and a shorter snout full of comparatively smaller teeth.
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i kraćoj njušci punoj srazmerno manjih zuba.
02:49
But as human cultures and occupations became more diverse and specialized,
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Kako su ljudske kulture i zanimanja postajala različitija i specijalizovanija,
02:53
so did our friends.
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to su postajali i naši prijatelji.
02:55
Short stocky dogs to herd livestock by nipping their heels;
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Kratki zdepasti psi su živeli sa krdima stoke i vodili računa o njima;
02:59
elongated dogs to flush badgers and foxes out of burrows;
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izduženi psi su isterivali jazavce i lisice iz jazbina;
03:03
thin and sleek dogs for racing;
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mršavi i brzi su bili zaduženi za trkanje;
03:06
and large, muscular dogs for guard duty.
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a veliki, mišićavi psi za stražarenje.
03:09
With the emergence of kennel clubs and dog shows during England’s Victorian era,
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Sa pojavom uzgajivačnica i izložbi pasa tokom viktorijanskog doba,
03:14
these dog types were standardized into breeds,
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ove vrste pasa su standardizovane u rase,
03:17
with many new ones bred purely for appearance.
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sa mnogo novih stvorenih isključivo zbog prikazivanja.
03:20
Sadly, while all dog breeds are the product of artificial selection,
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Nažalost, iako su sve rase pasa proizvod veštačke selekcije,
03:24
some are healthier than others.
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neke su zdravije od ostalih.
03:27
Many of these aesthetic characteristics come with congenital health problems,
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Mnoge estetske karakteristike dolaze sa urođenim zdravstvenim problemima,
03:31
such as difficulty breathing or being prone to spinal injuries.
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kao što su poteškoće sa disanjem ili sklonost ka povredama kičme.
03:36
Humanity’s longest experiment in controlled evolution
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Najduži eksperiment ljudskog roda u kontrolisanoj evoluciji
03:40
has had other side effects as well.
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imao je i druge nuspojave.
03:42
Generations of selection for tameness
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Generacije pitomih selekcija
03:44
have favored more juvenile and submissive traits
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su davale prednost mladalačkim i pokornijim osobinama
03:47
that were pleasing to humans.
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koje su bile zadovoljavajuće za ljude.
03:49
This phenomenon of selecting traits associated with youth is known as neoteny,
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Fenomen biranja osobina koje su u vezi sa mladošću je poznat kao neotenija
03:54
and can be seen in many domestic animals.
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i može se primetiti kod mnogih pripitomljenih životinja.
03:57
Thousands of years of co-evolution may even have bonded us chemically.
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Hiljade godina koevolucije su nas možda i povezale hemijski.
04:01
Not only can canines understand our emotions and body language,
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Psi ne samo da mogu da razumeju naše emocije i govor tela,
04:05
but when dogs and humans interact,
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nego i kad ljudi i psi interaguju,
04:08
both our bodies release oxytocin;
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i jedni i drugi ispuštaju oksitocin;
04:10
a hormone commonly associated with feelings of love and protectiveness.
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hormon često povezivan sa osećajem ljubavi i zaštićenosti.
04:15
It might be difficult to fathom how every Pomeranian, Chihuahua, and Poodle
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Možda je teško dokučiti kako su svaki pomeranac, čivava i pudla
04:20
are descended from fierce wolves.
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potomci svirepih vukova.
04:22
But the diversity of breeds today is the result of a relationship
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Raznolikost rasa danas je rezultat veze
04:26
that precedes cities, agriculture,
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koja prethodi gradovima, poljoprivredi,
04:29
and even the disappearance of our Neanderthal cousins.
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čak i nestanku naših neandertalnih rođaka.
04:32
And it’s heartening to know
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Ohrabrujuće je znati da,
04:33
that given enough time,
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ako se da dovoljno vremena,
04:35
even our most dangerous rivals can become our fiercest friends.
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čak i naši najopasniji neprijatelji mogu postati naši najvatreniji prijatelji.
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