Phylogeography and morphometric variation in the Cinnamon Hummingbird complex:Amazilia rutila(Aves:Trochilidae)  

作　　者：Melisa Vázquez-López Nandadevi Córtes-Rodríguez Sahid M.Robles-Bello Alfredo Bueno-Hernández Luz E.Zamudio-Beltrán Kristen Ruegg Blanca E.Hernández-Baños 

机构地区：[1]Museo de Zoología,Facultad de Ciencias,Universidad Nacional Autónoma de México,Apartado Postal,04510 Mexico City,Mexico [2]Department of Biology,Ithaca College,Ithaca,NY 14850,USA [3]Museo de Zoología,Facultad de Estudios Superiores Zaragoza,Universidad Nacional Autónoma de México,Mexico City,Mexico [4]Department of Biology,Colorado State University,Fort Collins,CO 80523,USA

出　　处：《Avian Research》2021年第4期509-525,共17页鸟类学研究（英文版）

基　　金：supported by PAPIIT/DGAPA;Universidad Nacional Autónoma de México(UNAM)through a grant to Blanca E.Hernández-Banos(IN220620);the Postdoctoral scholarship provided by DGAPA-UNAM。

摘　　要：Background:The Mesoamerican dominion is a biogeographic area of great interest due to its complex topography and distinctive climatic history.This area has a large diversity of habitats,including tropical deciduous forests,which house a large number of endemic species.Here,we assess phylogeographic pattern,genetic and morphometric variation in the Cinnamon Hummingbird complex Amazilia rutila,which prefers habitats in this region.This resident species is distributed along the Pacific coast from Sinaloa—including the Tres Marías Islands in Mexico to Costa Rica,and from the coastal plain of the Yucatán Peninsula of Mexico south to Belize.Methods:We obtained genetic data from 85 samples of A.rutila,using 4 different molecular markers(mtDNA:ND2,COI;nDNA:ODC,MUSK)on which we performed analyses of population structure(median-joining network,STRU CTU RE,FST,AMOVA),Bayesian and Maximum Likelihood phylogenetic analyses,and divergence time estimates.In order to evaluate the historic suitability of environmental conditions,we constructed projection models using past scenarios(Pleistocene periods),and conducted Bayesian Skyline Plots(BSP)to visualize changes in population sizes over time.To analyze morphometric variation,we took measurements of 5 morphological traits from 210 study skins.We tested for differences between sexes,differences among geographic groups(defined based on genetic results),and used PCA to examine the variation in multivariate space.Results:Using mtDNA,we recovered four main geographic groups:the Pacific coast,the Tres Marías Islands,the Chiapas region,and the Yucatán Peninsula together with Central America.These same groups were recovered by the phylogenetic results based on the multilocus dataset.Demography based on BSP results showed constant population size over time throughout the A.rutila complex and within each geographic group.Ecological niche model projec-tions onto past scenarios revealed no drastic changes in suitable conditions,but revealed some possible refuges.Mor-phometric results sh

关 键 词：Amazilia rutila Genetic structure Genetic variation PHYLOGEOGRAPHY Tres Marías Islands TROCHILIDAE Tropical deciduous forest 

分 类 号：Q958[生物学—动物学]