Throughout the animal kingdom, genetically related individuals are alike. But does this increased resemblance reflect the simple fact of having a number of genes in common, or has it been specifically selected to allow these relatives to recognize themselves? Through the use of facial recognition techniques developed in Artificial Intelligence,we show that the faces of male-like males related to the father are more similar to each other than those of females related by the mother, suggesting a selection to facilitate the recognition of the paternal in this species. The findings, published in the journal Science Advances, were conducted by teams from the Montpellier Institute of Evolutionary Sciences (ISEM – University of Montpellier/CNRS/IRD/EPHE), the Centre for Functional and Evolutionary Ecology (CEFE – CNRS/University of Montpellier/University Paul Valery Montpellier/EPHE), the German Primate Center and the Mandrillus Project.
The Selection of parentel (Selection Natural Promoting the spread of Behaviour Altruistic Between Related) Involves Ok Often, A recognition between Individuals Related who, at many homes, Many Species, Is Mediated facial features. Then that the Resemblance Between Individuals Related Could Do Reflect That Their Resemblance Genetic, She Could Also Be The Fruit a year Selection For Facilitate Their Recognition Mutual. Scientific Have Tested This Second Hypothesis In Student The Resemblance Facial Between Females mandrills (Mandrillus Sphinx), a primate of the Forests d’Africa Central Thanks to Methods recognition Facial Developed In Intelligence Artificial (AI) and Applied To A base of Data portraits Photographic Collected on the long Term in the Only natural population of mandrills accustomed to The Man (Project Mandrillus).
The Organization Social mandrill Is Structured by Groups of Females Related By The Mother (“matrilized”), who Are Familiar The Each Other because living in the Same Unit Family During Any Their Life. At This Species, reproduction Being By Elsewhere Widely monopolized by the Male alpha, at one Moment Given The Young mandrills Close In Age Share Often The Same Father. Yet The Most of These Related Paternal Live in matrilized Different: They Should So Be Little Yes Not Familiar The Each Other.
A Team Bringing together Members of Institute Science Evolution Montpellier (ISEM – University Montpellier/CNRS/IRD/EPHE), Ecology Functional and Evolutive (CEFE – CNRS/University Montpellier/University Paul Valery Montpellier/EPHE), the German Primate Center and the Project Mandrillus Shows half-time Sisters Paternal Interact Between They More than do Females non-Related And As half-time Sisters Mother tongues. This Observation Suggests That These half-Sisters Paternal Are So Able to Recognize As Being Related. These Results Are Published In Science Advances.
Since 2012, The team Has Collected more than 16,000 portraits of mandrills of the population Studied. These Portraits Have Served For Train A Algorithm d’Learning Deep to identify Different Individuals Of Group. This Algorithm Has Been Used to quantify the Resemblance Facial between the Females. Has All The Ages, half-users Sisters Paternal Look Between They More half-time Sisters Mother tongues, Then That These Two Categories relatives Share, In Average The Same Degree apparently Genetic. This Result Shows that the Resemblance Facial Do Reflects not the Only Similarity Genetic But Is Probably Adaptive. The authors Suggest that the strong Resemblance Facial Between Related Paternal Has Evolved To Facilitate Discrimination Social and the Nepotism Between Individuals a year Same Family Paternal.
Carpenter MJE, Harté Mr Poirotte C Meric de Bellefon J Laubi B Kappelle Pm Renoult Jp. Same father, same face: Deep learning reveals selection for signaling kinship in a wild primate. Science Advances