@article{fdi:010076496, title = {{F}rom matrimonial practices to genetic diversity in {S}outheast {A}sian populations : the signature of the matrilineal puzzle}, author = {{L}y, {G}. and {L}aurent, {R}. and {L}afosse, {S}. and {M}onidarin, {C}. and {D}iffloth, {G}. and {B}ourdier, {F}r{\'e}d{\'e}ric and {E}vrard, {O}livier and {T}oupance, {B}. and {P}avard, {S}. and {C}haix, {R}.}, editor = {}, language = {{ENG}}, abstract = {{I}n matrilineal populations, the descent group affiliation is transmitted by women whereas the socio-political power frequently remains in the hands of men. {T}his situation, named the 'matrilineal puzzle', is expected to promote local endogamy as a coping mechanism allowing men to maintain their decision-making power over their natal descent group. {I}n this paper, we revisit this 'matrilineal puzzle' from a population genetics' point of view. {I}ndeed, such tendency for local endogamy in matrilineal populations is expected to increase their genetic inbreeding and generate isolation-by-distance patterns between villages. {T}o test this hypothesis, we collected ethno-demographic data for 3261 couples and high-density genetic data for 675 individuals from 11 {S}outheast {A}sian populations with a wide range of social organizations: matrilineal and matrilocal populations ({M}), patrilineal and patrilocal populations ({P}) or cognatic populations with predominant matrilocal residence ({C}). {W}e observed that {M} and {C} populations have higher levels of village endogamy than {P} populations, and that such higher village endogamy leads to higher genetic inbreeding. {M} populations also exhibit isolation-by-distance patterns between villages. {W}e interpret such genetic patterns as the signature of the 'matrilineal puzzle'. {N}otably, our results suggest that any form of matrilocal marriage (whatever the descent rule is) increases village endogamy. {T}hese findings suggest that male dominance, when combined with matrilocality, constrains inter-village migrations, and constitutes an underexplored cultural process shaping genetic patterns in human populations. {T}his article is part of the theme issue '{T}he evolution of female-biased kinship in humans and other mammals'.}, keywords = {residence rule ; matrilineal puzzle ; inbreeding ; human genetics ; matrilocal ; patrilocal ; {CAMBODGE} ; {LAOS} ; {ASIE} {DU} {SUD} {EST}}, booktitle = {}, journal = {{P}hilosophical {T}ransactions of the {R}oyal {S}ociety {B} : {B}iological {S}ciences}, volume = {374}, numero = {1780}, pages = {art. 20180434 [10 p.]}, ISSN = {0962-8436}, year = {2019}, DOI = {10.1098/rstb.2018.0434}, URL = {https://www.documentation.ird.fr/hor/fdi:010076496}, }