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Molecular phylogenetics and evolution v.118, 2018년, pp.122 - 134   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Origin and distribution of desert ants across the Gibraltar Straits

Villalta, Irene    (Estación Biológica de Doñana, CSIC, Avenida Américo Vespucio 26, 41092 Sevilla, Spain   ); Amor, Fernando    (Estación Biológica de Doñana, CSIC, Avenida Américo Vespucio 26, 41092 Sevilla, Spain   ); Galarza, Juan A.    (Centre of Excellence in Biological Interactions, Dept. of Biological and Environmental Science, University of Jyväskylä, Finland   ); Dupont, Simon    (Institute of Insect Biology, Parc de Grandmont, 37200 Tours, France   ); Ortega, Patrocinio    (Estación Biológica de Doñana, CSIC, Avenida Américo Vespucio 26, 41092 Sevilla, Spain   ); Hefetz, Abraham    (Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel   ); Dahbi, Abdallah    (Department of Biology, Cadi Ayyad University, Polydisciplinary Faculty of Safi, 46000 Safi, Morocco   ); Cerdá, Xim    (Estación Biológica de Doñana, CSIC, Avenida Américo Vespucio 26, 41092 Sevilla, Spain   ); Boulay, Raphaël    (Institute of Insect Biology, Parc de Grandmont, 37200 Tours, France  );
  • 초록  

    Abstract The creation of geographic barriers has long been suspected to contribute to the formation of new species. We investigated the phylogeography of desert ants in the western Mediterranean basin in order to elucidate their mode of diversification. These insects which have a low dispersal capacity are recently becoming important model systems in evolutionary studies. We conducted an extensive sampling of species belonging to the Cataglyphis albicans group in the Iberian Peninsula (IP) and the northern Morocco (North Africa; NA). We then combined genetic, chemical and morphological analyses. The results suggest the existence of at least three and five clades in the IP and NA, respectively, whose delineation partially encompass current taxonomic classification. The three Iberian clades are monophyletic, but their origin in NA is uncertain (79% and 22% for Bayesian and Maximum Likelihood support, respectively). The estimation of divergence time suggests that a speciation process was initiated after the last reopening of the Gibraltar Straits ≈5.33 Ma. In the IP, the clades are parapatric and their formation may have been triggered by the fragmentation of a large population during the Pleistocene due to extended periods of glaciation. This scenario is supported by demographic analyses pointing at a recent expansion of Iberian populations that contrasts with the progressive contraction of the NA clades. Niche modeling reveals that this area, governed by favorable climatic conditions for desert ants, has recently increased in the IP and decreased in NA. Altogether, our data points at geoclimatic events as major determinants of species formation in desert ants, reinforcing the role of allopatric speciation. Highlights Nine clades of desert ants (albicans group) exist in the Iberian Peninsula and Morocco. Iberian species diverged from their African ancestor after the Gibralta Straits last opening. Several refugia of desert ants occurred in the Iberian Peninsula during the last Glaciation. Iberian clades are parapatric and populations are in expansion. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Ants .   Cataglyphis .   Phylogeography .   Glaciations .   Thermophily .   Genital traits .   Cuticular hydrocarbons.  

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