Publicaciones

@article{Rodriguez-Correa2018,

title = {Contrasting Patterns of Population History and Seed-mediated Gene Flow in Two Endemic Costa Rican Oak Species},

author = {Hernando Rodríguez-Correa and Ken Oyama and Mauricio Quesada and Eric J. Fuchs and Antonio González-Rodríguez},

doi = {10.1093/jhered/esy011},

issn = {14657333},

year  = {2018},

date = {2018-01-01},

journal = {Journal of Heredity},

volume = {109},

issue = {5},

pages = {530-542},

abstract = {Lower Central America is an important area to study recent population history and diversification of Neotropical species due to its complex and dynamic geology and climate. Phylogeographic studies in this region are few in comparison with other regions and even less for tree species. The aim of the present study was to characterize the phylogeographic structure in 2 partially co-distributed endemic oak species (Quercus costaricensis and Q. bumelioides) of the Costa Rican mountains using chloroplast short sequence repeats (cpSSRs), and to test for the effect of geological and palaeoclimatic processes on their population history. Genetic diversity and structure, haplotype networks, patterns of seed-mediated gene flow and historical demography were estimated for both species. Results suggested contrasting patterns. Quercus costaricensis exhibited high values of genetic diversity, a marked phylogeographic structure, a north-to-south genetic diversity gradient and evidence of a demographic expansion during the Quaternary. Quercus bumelioides did not show significant genetic structure and the haplotype network and historical demography estimates suggested a recent population expansion probably during the Pleistocene-Holocene transition. The phylogeographic structure of Q. costaricensis seems to be related to Pleistocene altitudinal migration due to its higher altitudinal distribution. Meanwhile, historical seed-mediated gene flow through the lower altitudinal distribution of Q. bumelioides may have promoted the homogenization of genetic variation. Population expansion and stable availability of suitable climatic areas in both species probably indicate that palaeoclimatic changes promoted downwards altitudinal migration and formation of continuous forests allowing oak species to expand their distribution into the Panamanian mountains during glacial stages.},

keywords = {chloroplast microsatellites, Fagaceae, gene flow, Middle America, Phylogeography, Quercus},

pubstate = {published},

tppubtype = {article}

}

@article{Rodriguez-Correa2017,

title = {Complex phylogeographic patterns indicate Central American origin of two widespread Mesoamerican Quercus (Fagaceae) species},

author = {Hernando Rodríguez-Correa and Ken Oyama and Mauricio Quesada and Eric J. Fuchs and Maura Quezada and Lilian Ferrufino and Susana Valencia-Ávalos and Alfredo Cascante-Marín and Antonio González-Rodríguez},

doi = {10.1007/s11295-017-1147-7},

issn = {16142950},

year  = {2017},

date = {2017-01-01},

journal = {Tree Genetics and Genomes},

volume = {13},

issue = {3},

publisher = {Tree Genetics & Genomes},

abstract = {The northern Neotropical region is characterized by a heterogeneous geological and climatic history. Recent studies have shown contrasting patterns regarding the role of geographic elements as barriers that could have determined phylogeographic structure in various species. Recently, the phylogeography and biogeography of Quercus species have been studied intensively, and the patterns observed so far suggest contrasting evolutionary histories for Neotropical species in comparison with their Holarctic relatives. The goal of this study was to describe the phylogeographic structure of two Neotropical oak species (Quercus insignis and Quercus sapotifolia) in the context of the geological and palaeoclimatic history of the northern Neotropics. Populations through the distribution range of both species were collected and characterized using nine chloroplast DNA microsatellite loci. Both oak species showed high levels of genetic diversity and strong phylogeographic structure. The distribution of genetic variation in Q. insignis suggested an influence of two major barriers, the Isthmus of Tehuantepec and the Nicaraguan Depression, while Q. sapotifolia exhibited a genetic structure defined by the heterogeneity of the Chortis highlands. The haplotype networks of both species indicated complex histories, suggesting that colonization from the Sierra Madre de Chiapas to central Mexico and from the north of the Nicaraguan Depression to the Costa Rican mountains may have occurred during different stages, and apparently more than one time. In conclusion, the phylogeographic structure of Neotropical oak species seems to be defined by a combination of geological and climatic events.},

keywords = {historical demography, Middle America, Neotropical trees, Palaeodistribution, Phylogeography},

pubstate = {published},

tppubtype = {article}

}