@article{fdi:010063701, title = {{E}nvironmental variation and rivers govern the structure of chimpanzee genetic diversity in a biodiversity hotspot}, author = {{M}itchell, {M}. {W}. and {L}ocatelli, {S}abrina and {C}lee, {P}. {R}. {S}. and {T}homassen, {H}. {A}. and {G}onder, {M}. {K}.}, editor = {}, language = {{ENG}}, abstract = {{B}ackground: {T}he mechanisms that underlie the diversification of tropical animals remain poorly understood, but new approaches that combine geo-spatial modeling with spatially explicit genetic data are providing fresh insights on this topic. {D}ata about the diversification of tropical mammals remain particularly sparse, and vanishingly few opportunities exist to study endangered large mammals that increasingly exist only in isolated pockets. {T}he chimpanzees of {C}ameroon represent a unique opportunity to examine the mechanisms that promote genetic differentiation in tropical mammals because the region is home to two chimpanzee subspecies: {P}an troglodytes ellioti and {P}. t. trogolodytes. {T}heir ranges converge in central {C}ameroon, which is a geographically, climatically and environmentally complex region that presents an unparalleled opportunity to examine the roles of rivers and/or environmental variation in influencing the evolution of chimpanzee populations. {R}esults: {W}e analyzed microsatellite genotypes and mt{DNA} {HVRI} sequencing data from wild chimpanzees sampled at a fine geographic scale across {C}ameroon and eastern {N}igeria using a spatially explicit approach based upon {G}eneralized {D}issimilarity {M}odeling. {B}oth the {S}anaga {R}iver and environmental variation were found to contribute to driving separation of the subspecies. {T}he importance of environmental variation differed among subspecies. {G}ene-environment associations were weak in {P}. t. troglodytes, whereas environmental variation was found to play a much larger role in shaping patterns of genetic differentiation in {P}. t. ellioti. {C}onclusions: {W}e found that both the {S}anaga {R}iver and environmental variation likely play a role in shaping patterns of chimpanzee genetic diversity. {F}uture studies using single nucleotide polymorphism ({SNP}) data are necessary to further understand how rivers and environmental variation contribute to shaping patterns of genetic variation in chimpanzees.}, keywords = {{CAMEROUN} ; {NIGERIA}}, booktitle = {}, journal = {{B}mc {E}volutionary {B}iology}, volume = {15}, numero = {}, pages = {art. 1 [13 p.]}, ISSN = {1471-2148}, year = {2015}, DOI = {10.1186/s12862-014-0274-0}, URL = {https://www.documentation.ird.fr/hor/fdi:010063701}, }