The latest stop in the #PDEx tour is being hosted by Barbara J. King:
Since animals, including humans, are merely ambulatory vehicles for their selfish genes, according to the dominant framework, it would be to one's benefit to care for a niece or cousin that lost their mother but not for a stranger of which there was no genetic relation. This is because any genes that promoted such altruism towards unrelated individuals would end up losing out by using up resources that didn’t perpetuate themselves. However, these “altruistic genes” would be passed on and thrive if they were helping a kin member with similar genetic makeup. In the currency of reproductive fitness, nepotism pays.
However, a study in the journal Primates by Cristiane Cäsar and Robert John Young report on a case of adoption among a wild group of black-fronted titi monkeys (Callicebus nigrifrons) from the rainforests of Brazil.
Read the rest of the post here and stay tuned for the next entry in The Primate Diaries in Exile tour.
Cäsar, C., & Young, R. (2007). A case of adoption in a wild group of black-fronted titi monkeys (Callicebus nigrifrons) Primates, 49 (2), 146-148 DOI: 10.1007/s10329-007-0066-x