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      THE ENDANGERED SPECIES Aristelliger georgeensis (SQUAMATA: SPHAERODACTYLIDAE) IN RONCADOR CAY, COLOMBIAN CARIBBEAN Translated title: La especie amenazada Aristelliger georgeensis (Squamata: Sphaerodactylidae) en el Cayo Roncador, Caribe colombiano

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          Abstract

          Aristelliger georgeensis, previously known to occur in the Yucatan peninsula (Mexico), the coasts and islands from Belize and Honduras, and the oceanic islands of Colombia in the Caribbean (San Andres, Providence and Saint Catalina) was registered for the first time in Roncador Cay, a flat and small island of coralline origin, located in the southwest of the Caribbean. Being considered as an endangered species at the national level, the new locality for this gecko constitutes an opportunity for its conservation. Some topics regarding the possible origins of this new population are discussed. This new locality represents the eastern most documented record of this species so far.

          Translated abstract

          Aristelliger georgeensis, previamente conocido de la península de Yucatán (México), las costas e islas de Belice y Honduras y de las islas oceánicas de Colombia en el Caribe (San Andrés, Providencia y Santa Catalina), fue registrado por primera vez en el Cayo Roncador, una isla plana y pequeña de origen coralino, ubicada en el suroccidente del Caribe. Siendo considerada como una especie amenazada a nivel nacional, la nueva localidad para este geco constituye una oportunidad para su conservación. Se discuten algunos tópicos relacionados con el posible origen de esta nueva población. Esta nueva localidad representa el registro documentado más al Este para la especie.

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          Most cited references12

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          Island biogeography of the Anthropocene.

          For centuries, biogeographers have examined the factors that produce patterns of biodiversity across regions. The study of islands has proved particularly fruitful and has led to the theory that geographic area and isolation influence species colonization, extinction and speciation such that larger islands have more species and isolated islands have fewer species (that is, positive species-area and negative species-isolation relationships). However, experimental tests of this theory have been limited, owing to the difficulty in experimental manipulation of islands at the scales at which speciation and long-distance colonization are relevant. Here we have used the human-aided transport of exotic anole lizards among Caribbean islands as such a test at an appropriate scale. In accord with theory, as anole colonizations have increased, islands impoverished in native species have gained the most exotic species, the past influence of speciation on island biogeography has been obscured, and the species-area relationship has strengthened while the species-isolation relationship has weakened. Moreover, anole biogeography increasingly reflects anthropogenic rather than geographic processes. Unlike the island biogeography of the past that was determined by geographic area and isolation, in the Anthropocene--an epoch proposed for the present time interval--island biogeography is dominated by the economic isolation of human populations.
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            Coming to America: multiple origins of New World geckos.

            Geckos in the Western Hemisphere provide an excellent model to study faunal assembly at a continental scale. We generated a time-calibrated phylogeny, including exemplars of all New World gecko genera, to produce a biogeographical scenario for the New World geckos. Patterns of New World gecko origins are consistent with almost every biogeographical scenario utilized by a terrestrial vertebrate with different New World lineages showing evidence of vicariance, dispersal via temporary land bridge, overseas dispersal or anthropogenic introductions. We also recovered a strong relationship between clade age and species diversity, with older New World lineages having more species than more recently arrived lineages. Our data provide the first phylogenetic hypothesis for all New World geckos and highlight the intricate origins and ongoing organization of continental faunas. The phylogenetic and biogeographical hypotheses presented here provide an historical framework to further pursue research on the diversification and assembly of the New World herpetofauna. © 2010 The Authors. Journal of Evolutionary Biology © 2010 European Society For Evolutionary Biology.
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              The evolution and geographical origin of the New World Hemidactylus mabouia-brookii complex (Gekkonidae, Sauria).

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                abc
                Acta Biológica Colombiana
                Acta biol.Colomb.
                Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología (Bogotá )
                0120-548X
                September 2015
                : 20
                : 3
                : 221-224
                Affiliations
                [1 ] Pontificia Universidad Javeriana Cali Colombia
                [2 ] Universidad de Antioquia Colombia
                Article
                S0120-548X2015000300020
                10.15446/abc.v20n3.49373
                c02c86b0-7489-437d-873b-60abb6e70395

                http://creativecommons.org/licenses/by/4.0/

                History
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                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-548X&lng=en
                Categories
                BIOLOGY

                General life sciences
                Conservation,new locality,Saint George Island Gecko,Conservación,geco pestañudo,nueva localidad

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