Plant Systematics and Evolution

, Volume 305, Issue 1, pp 89–101 | Cite as

Low genetic differentiation between two morphologically and ecologically distinct giant-leaved Mexican oaks

  • Ana L. Albarrán-Lara
  • Remy J. Petit
  • Antoine Kremer
  • Henry Caron
  • Juan M. Peñaloza-Ramírez
  • Paul F. Gugger
  • Patricia D. Dávila-Aranda
  • Ken OyamaEmail author
Original Article


Quercus magnoliifolia and Q. resinosa are two Mexican white oak species that have been taxonomically reported to exhibit morphological similarities and possible hybridization. The objective of this study was to compare the variation in Q. magnoliifolia and Q. resinosa throughout their distribution range to identify the degree of species differentiation using morphological, ecological and genetic tools. Morphological analysis showed differentiation in leaf shape between the species corresponding to the taxonomical identification of Q. magnoliifolia and Q. resinosa in almost all cases, but intermediate individuals were identified in the middle of the species ranges. Comparison of ecological niche models for Q. magnoliifolia and Q. resinosa showed non-equivalent ecological niches, high climatic niche differences and low to moderate spatial and environmental niche overlap, mainly along the Trans-Mexican Volcanic Belt where morphologically intermediate individuals between species were more frequently located, suggesting recent hybridization by secondary contact. In contrast, we found low but significant genetic differentiation between Q. magnoliifolia and Q. resinosa and lower interspecific than intraspecific genetic differentiation, and Bayesian clustering analysis (K = 2) failed to assign each species to a unique genotype, suggesting shared ancestral variation as the cause of genetic similarity between species due to recent divergence. In conclusion, although neutral molecular markers do not distinguish the species Q. magnoliifolia and Q. resinosa, we found morphological and ecological differentiation between these oaks that provide preliminary evidence for divergent selection.


Ecological niche Interspecific gene flow Mexican oaks Quercus magnoliifolia Quercus resinosa Species differentiation 



We thank the constructive comments and suggestions of two anonymous reviewers to previous drafts. We also thank to V. Rocha, M.D. Lugo-Aquino, N. Pérez-Nasser, A. Palencia for technical assistance; A. Torres-Miranda for ecological niche modelling assistance; S. Valencia for taxonomical identification support; and J. Gonzaga-Espíritu for laboratory assistance.


This work was supported by the graduate programme Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México (UNAM) and by CONACyT doctoral scholarship [188873] and UC MEXUS—CONACyT postdoctoral fellowship [I010/680/2012; I010/375/2013] to ALAL. This research was supported by DGAPA-PAPIIT (UNAM) [IN209108, IN229803, RV201015], SEMARNAT-CONACyT [2004-311, 2004-C01-97 and 2006-23728], CONACYT [240136] to KO, and by CONACyT-ECOS NORD [grant M03-A01] to AK and KO.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical statement

The authors comply with all rules of the journal following the COPE guidelines; all authors have contributed and approved the final manuscript.

Supplementary material

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  • Ana L. Albarrán-Lara
    • 1
  • Remy J. Petit
    • 2
    • 3
  • Antoine Kremer
    • 2
    • 3
  • Henry Caron
    • 2
    • 3
  • Juan M. Peñaloza-Ramírez
    • 4
  • Paul F. Gugger
    • 5
  • Patricia D. Dávila-Aranda
    • 6
  • Ken Oyama
    • 1
    Email author
  1. 1.Escuela Nacional de Estudios Superiores (ENES), Unidad Morelia (UNAM)MoreliaMexico
  2. 2.UMR1202 BiogecoINRACestasFrance
  3. 3.BIOGECO, UMR 1202Univ. BordeauxPessacFrance
  4. 4.Centro de Estudios de Desarrolló Sustentable y Aprovechamiento de la vida Silvestre, CEDESUUniversidad Autónoma de CampecheSan Francisco de CampecheMexico
  5. 5.Appalachian Laboratory, Center for Environmental ScienceUniversity of MarylandFrostburgUSA
  6. 6.Facultad de Estudios Superiores (FES) IztacalaTlalnepantlaMexico

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