Christophe Boesch kollegoineen ovat raportoineet havainneensa 18 orvon simpanssin adoptiota Taï metsän simpanssi-populaatiossa 30 vuotta kestäneen havainnointinsa aikana. Joissakin tapauksissa naaraat rintaruokkivat orpoja imeväisiä useita vuosia ja joskus uroksetkin auttoivat poikasia:
''Remarkably, all adult males of the East Group that adopted young orphans went a step further by investing in unweaned small infants and carrying them dorsally during travel for many months (see Figures 3 and 4 of Porthos with Gia) (Table 3). Since, Taï chimpanzees walk about 8 km per day on average, this represents a notable investment. Porthos' adoption of Gia lasted for 17 months, until his death due to Anthrax, and he was seen to carry her even in extremely risky situations, such as during encounters with neighboring communities [26]. Furthermore, some males were seen to share their night nest with their adopted infant (Table 3). Fredy, the 3rd ranking male of the East Group, adopted Victor, the son of Vanessa, who died from Anthrax in late December 2008, and shared his nest with him every night, carried him on his back for all long travels, and shared the Coula nuts he opened from December 2008 to July 2009. For example, on February 17th, Fredy cracked 196 Coula nuts for 2h05mn and shared pieces of 79% of them. This gives a measure of the altruistic investment made in an unrelated infant.''
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0008901
Alustuksen nappasin: http://johnhawks.net/weblog/reviews/chimpanzees/chimpanzee-adoption-boesch-2010.html
''Remarkably, all adult males of the East Group that adopted young orphans went a step further by investing in unweaned small infants and carrying them dorsally during travel for many months (see Figures 3 and 4 of Porthos with Gia) (Table 3). Since, Taï chimpanzees walk about 8 km per day on average, this represents a notable investment. Porthos' adoption of Gia lasted for 17 months, until his death due to Anthrax, and he was seen to carry her even in extremely risky situations, such as during encounters with neighboring communities [26]. Furthermore, some males were seen to share their night nest with their adopted infant (Table 3). Fredy, the 3rd ranking male of the East Group, adopted Victor, the son of Vanessa, who died from Anthrax in late December 2008, and shared his nest with him every night, carried him on his back for all long travels, and shared the Coula nuts he opened from December 2008 to July 2009. For example, on February 17th, Fredy cracked 196 Coula nuts for 2h05mn and shared pieces of 79% of them. This gives a measure of the altruistic investment made in an unrelated infant.''
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0008901
Alustuksen nappasin: http://johnhawks.net/weblog/reviews/chimpanzees/chimpanzee-adoption-boesch-2010.html
Vastaukset 2
Vanhimmat
maalaistaloa nähnyt. Se on itsestäänselvyys että eläimet adoptoivat saman lajin poikasia. Mutta tarpeen vaatiessa possu syöttää myös emonsa menettäneitä lampaita ja päinvastoin, ja meillä syötti koira kissanpentua vaikka emokissa oli elossa. Tosin vähän väkisin, ei se kissanpentu niin olisi välittänyt.
Ja ennenvanhaan kun lapsia tehailtiin toistakymmentä joka tupaan, ei ollut harvinaista että emäntä ruokki jotakin emonsa menettänyttä possua tai muuta kotieläintä.
Ja lehmä ja vuohi ruokkivat tänäkin päivänä ihmislapsia, ja jopa aikuisia.
Kyllä se on mielestäni hieman eri tilanne luonnonvaraisilla simpanseilla kuin kotieläimillä. Simpanssi urokset kantoivat orpoja poikasia selässään ja ne kävelevät päivässä noin kahdeksan kilometriä. Urokset jakoivat petinsä poikasten kanssa ja jakoivat ruokansa. Fredy niminen simpanssi avasi 196 coula-pähkinää ja jakoi niistä 79%.
''Kyllä näkee ettei ole äijä maalaistaloa nähnyt.''
Höpö höpö. Olen ollut mukana heinän teossa ja ajamassa lehmiä ja toimittanut muuta pientä eräässä maalaistalossa.