@article{fdi:010053461,
  title = {{I}mpact of past climatic and recent anthropogenic factors on wild yam genetic diversity},
  author = {{C}hair, {H}. and {D}uroy, {P}. {O}. and {C}ubry, {P}. and {S}insin, {B}. and {P}ham, {J}ean-{L}ouis},
  editor = {},
  language = {{ENG}},
  abstract = {{F}orests of the {D}ahomey {G}ap are considered as refugia for many species. {T}hey play a crucial role in providing ecosystem services in an area devoid of forests. {H}owever, the impact of the way they are managed on the biodiversity they host has barely been investigated. {W}ild yams existing in these forests play a crucial role in maintaining the genetic diversity of cultivated yams. {I}ndeed, studies of farmer practices have shown that, by way of ennoblement, wild yams collected and selected in the forests and old fallow areas are integrated into the cultivated pool. {H}owever, the genetic structure of wild yams is poorly understood. {U}sing nine microsatellite loci, we investigated the population genetics of {D}ioscorea praehensilis in five forests in {B}enin, involving different management strategies and bioclimatic areas. {P}opulations of {D}. praehensilis were strongly differentiated, consistent with an ancient separation of the forests. {W}hile the {D}. praehensilis population in a holly forest was undergoing mutation and drift equilibrium, the population collected from the most conserved forest was in a bottleneck. {M}oreover, in two forests with different management strategies, accessions from other forests were found, resulting from the displacement of yams following farmer migrations. {N}o isolation by distance was detected, but a differentiation was found between populations of the {S}udano-{G}uinean climate and the {G}uineo-{C}ongolian climate. {O}ur findings suggest differentiation due to forest isolations under past climatic conditions and more recent tuber flow through anthropogenic impacts.},
  keywords = {bottleneck ; {D}ahomey {G}ap ; {D}ioscorea ; genetic diversity ; tuber flow ; {BENIN} ; {ZONE} {SOUDANOGUINEENNE} ; {COULOIR} {DAHOMEEN}},
  booktitle = {},
  journal = {{M}olecular {E}cology},
  volume = {20},
  numero = {8},
  pages = {1612--1623},
  ISSN = {0962-1083},
  year = {2011},
  DOI = {10.1111/j.1365-294{X}.2011.05041.x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053461},
}