@article{fdi:010083124, title = {{S}hape relatedness between geographic populations of {C}ulex tritaeniorhynchus, the primary vector of {J}apanese encephalitis virus : a landmark study}, author = {{M}orales {V}argas, {R}. and {T}sunoda, {T}. and {N}oda, {J}. and {B}ouss{\`e}s, {P}hilippe and {N}guyen, {T}. {Y}. and {H}asebe, {F}. and {D}ujardin, {J}ean-{P}ierre}, editor = {}, language = {{ENG}}, abstract = {{B}ackground: {J}apanese encephalitis is a severe disease of acute encephalitis, with children and the elderly primarily affected, and with mortality rates reaching over 25%. {T}he virus is transmitted mainly by species of the {C}ulex ({C}ulex) vishnui subgroup, primarily the widely spread {C}x. tritaeniorhynchus {G}iles. {T}he latter is known as a highly migratory mosquito which moves with airflow over large distances. {W}e explored the geometric variation of the wing venation among distant areas of its geographic distribution. {O}ur working hypothesis was that shape variation across geography could reveal known past and present migratory routes. {M}aterials methods: {W}e compared the wing venation geometry of 236 female {C}ulex tritaeniorhynchus from different locations in the {M}adagascan ({L}a {R}eunion), {O}riental ({T}hailand, {V}ietnam) and {P}aleartic ({J}apan) regions. {T}o ascertain the taxonomic signal of the wing venation we also used two species as relative outgroups, {C}x. whitmorei and {C}x. brevipalpis. {R}esults: {I}n spite of an increasing morphometric variation as expected with larger geographic dispersion, our {C}x. tritaeniorhynchus samples were clustered as a single species when considered relative to other {C}ulex species. {T}he relationships between geographic sites of {C}x. tritaeniorhynchus globally conformed with an isolation by distance model. {T}he shape homogeneity of our {P}alearctic samples ({J}apan) contrasted with some heterogeneity observed in the {O}riental region ({T}hailand, {V}ietnam), and could be related to the different regimes of wind trajectories in these regions. {C}onclusion: {T}he average shape variation of {C}ulex tritaeniorhynchus disclosed a separation between {M}adagascan, {O}riental and {P}alearctic regions in accordance with geography. {T}he wing venation not only could reflect geography, it also contained a clear taxonomic signal separating three {C}ulex species. {W}ithin {C}x. tritaeniorhynchus, a contrasting pattern of shape variation between the {P}alearctic and the {O}riental regions is tentatively explained by the influence of wind trajectories.}, keywords = {{C}ulex tritaeniorhynchus ; {J}apan ; {V}ietnam ; {T}hailand ; {L}a {R}eunion ; {G}eometric ; morphometrics ; {W}inds ; {JAPON} ; {VIET} {NAM} ; {THAILANDE} ; {REUNION}}, booktitle = {}, journal = {{I}nfection {G}enetics and {E}volution}, volume = {90}, numero = {}, pages = {104764 [9 p.]}, ISSN = {1567-1348}, year = {2021}, DOI = {10.1016/j.meegid.2021.104764}, URL = {https://www.documentation.ird.fr/hor/fdi:010083124}, }