قیمت های روز
جوجه یک روزه بومی: 6.200 تومان ||جوجه بومی یک ماهه : 30،000 تومان ||جوجه بومی دو ماهه : 45،000 تومان ||جوجه بومی سه ماهه : 62،000 تومان ||جوجه بومی چهار ماهه : 62،000 تومان ||جوجه بومی پنج ماهه : 62،000 تومان ||جوجه بومی شش ماهه : 110،000 ||اردک یک روزه : 8،000 تومان ||اردک یک ماهه : 50،000 تومان ||اردک بالغ : 85،000 تومان ||کبک یک روزه : 9،500 تومان ||کبک یک ماهه : 30،000 تومان ||کبک دو ماهه : 35،000 تومان ||کبک سه ماهه : 43،000 تومان ||کبک چهار ماهه : 50،000 ||کبک بالغ : 90،000 تومان ||بوقلمون بیوتی یک روزه : 55،000 تومان ||بوقلمون بیوتی یک ماهه : 75،000 تومان ||بوقلمون برنز یک روزه : 32،000 تومان ||بوقلمون برنز یک ماهه : 63،000 تومان ||جوجه گوشتی راس : 15.000 -15.500 تومان ||جوجه گوشتی پلاس: 14.000 – 13.500 تومان ||جوجه گوشتی کاب : 12.800 – 13.000 تومان ||جوجه گوشتی آرین : 6.500 -7.000 تومان ||جوجه گوشتی هوبارد : 7.000-6.900 ||جوجه گوشتی فلکس : 7.300-7.800 ||جوجه گوشتی تو لکی:2.500 تومان – ||جوجه گوشتی آرین کنسلی : 4500 تومان ||شترمرغ هچری : 550،000 تومان ||شترمرغ 15 روزه : 550.000 تومان ||شترمرغ 20 روزه : 600.000 تومان ||شترمرغ یک ماهه : 650.000تومان ||شترمرغ دو ماهه:850.000 تومان ||شترمرغ سه ماهه: فعلا موجود نمی باشد ||شترمرغ پرواری : 75،000 تومان ||پولت یک روزه : 20،000 تومان ||پولت 90 روزه : 90،000 تومان ||تخم گذار(ل اس ال) : 125.000 تومان ||تخم مرغ بومی هر کیلو : 36،000 تومان ||تخم مرغ سفید: هر کیلو 39،800 تومان ||بلدرچین یک روزه: 2،000 تومان ||بلدرچین بالغ: 14،000 تومان 

امروز: 4مهر1401 - 10:42

Ostrich Eggs Used in Stone Age Communication

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Ostrich Eggs Used in Stone Age Communication

Long before social networks, text messages, phone calls or even the postal system, hunter-gatherers would communicate using eggshells.

– Engravings on ostrich eggshells reveal an early form of symbolic communication.

– These discoveries show that modern humans and Neanderthals made items holding symbolic meaning over 60,000 years ago.

Long before human communication evolved into incessant tapping on computer keys, people scratched on eggshells.

Don’t laugh — researchers say a cache of ostrich eggshells engraved with geometric designs demonstrates the existence of a symbolic communication system around 60,000 years ago among African hunter-gatherers.

The unusually large sample of 270 engraved eggshell fragments, mostly excavated over the past several years at Diepkloof Rock Shelter in South Africa, displays two standard design patterns, according to a team led by archaeologist Pierre-Jean Texier of the University of Bordeaux 1 in Talence, France.

Each pattern enjoyed its own heyday between approximately 65,000 and 55,000 years ago, the investigators report in a paper to be published this week in the Proceedings of the National Academy of Sciences.

Researchers already knew that the Howiesons Poort culture, which engraved the eggshells, engaged in other symbolic practices, such as engraving designs into pieces of pigment, that were considered to have been crucial advances in human behavioral evolution. But the Diepkloof finds represent the first archaeological sample large enough to demonstrate that Stone Age people created design traditions, at least in their engravings, Texier says.

Evidence of intentionally produced holes in several Diepkloof eggshells indicates that ancient people made what amounted to canteens out of them, a practice that researchers have documented among modern hunter-gatherers in southern Africa.

The engraved patterns probably identified the eggshells as the property of certain groups or communities, Texier proposes.

“The Diepkloof engravings were clearly made for visual display and recognized as such by a large audience comprising members of a community, and probably members of related communities,” comments University of Bordeaux 1 archaeologist Francesco d’Errico, who was not involved in the new study.

D’Errico participated in the recent unearthing of 13 pieces of engraved pigment at South Africa’s Blombos Cave dating to between 100,000 and 75,000 years ago. Along with perforated sea shells and other personal ornaments previously excavated in Africa and the Middle East, these discoveries show that items holding symbolic meaning were made more than 60,000 years ago by both modern humans and Neanderthals.

Even more exciting, according to archaeologist Curtis Marean of Arizona State University in Tempe, is the presence of drinking spouts in the South African eggshells. Water containers opened a new world of travel across arid regions for ancient people, he notes.

“The ability to carry and store water is a breakthrough technological advance, and here we have excellent evidence for it very early,” Marean says. “Wow!”

Eggshell fragments from the oldest sediment layers at Diepkloof display a hatched-band motif. These engravings consist of two long, parallel lines intersected by varying numbers of short lines. Some specimens contain one hatched band, while others display remnants of two or three. Engravers always fashioned parallel lines first and then inserted regularly spaced intersecting lines, Texier says.

Eggshells from younger soil layers at Diepkloof contain patterns consisting of deeply engraved, parallel lines that sometimes converge or intersect. One eggshell fragment from these layers exhibits a different pattern — slightly curved horizontal lines that cross a central, vertical line.

Of the many Howiesons Poort sites in southern Africa that have yielded ostrich eggshells, only Diepkloof shows evidence of stylistic engraving traditions, Texier says.

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نه + دو =

ردیفمحصولقیمت(تومان)
1جوجه راس15.500 - 15.000
2جوجه پلاس14.000 - 13.500
3جوجه کاب13.000 - 12.800
4جوجه فلکس7.800 - 9.000
5جوجه هوبارد6.000 - 6.500
6جوجه آرین7.000-6.500
7جوجه یک روزه بومی6.200
8جوجه بومی یک ماهه30.000
9جوجه بومی دو ماهه45.000
10جوجه بومی سه ماهه62.000
11جوجه بومی چهار ماهه62.000
12جوجه بومی پنج ماهه62.000
13جوجه بومی شش ماهه110.000
14اردک یک روزه8.000
15اردک یک ماهه50.000
16اردک بالغ85.000
17کبک یک روزه9.500
18کبک یک ماهه30.000
19کبک دو ماهه35.000
20کبک سه ماهه43.000
21کبک چهار ماهه50.000
22کبک بالغهر کیلو 90.000
23بوقلمون بیوتی یک روزه35.000-27.000
24بوقلمون بیوتی یک ماهه75.000
25بوقلمون برنز یک روزه32.000
26بوقلمون برنز یک ماهه63.000
27جوجه گوشتی تو لکی-
28جوجه گوشتی آرین کنسلی500
29شترمرغ 15 روزه550.000
30شترمرغ 20 روزه600.000
31شترمرغ یک ماهه650.000
32شترمرغ دو ماهه850.000
33شترمرغ سه ماههفعلا موجود نمی باشد
34شترمرغ پرواری70.000-75.000
35شتر مرغ هچری350،000
36پولت یک روزه20.000
37پولت 90 روزه90.000
38تخم گذار(ل اس ال)125.000
39تخم مرغ سفید هر کیلو 39.800
40تخم مرغ بومیهر کیلو 36.000