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      Detection of cryptic diversity in lizards (Squamata) from two Biosphere Reserves in Mesoamerica

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          Abstract

          A combined approach based on karyology and DNA taxonomy allowed us to characterize the taxonomic peculiarities in 10 Mesoamerican lizard species, belonging to six genera and five families, inhabiting two Biosphere Reserve in Chiapas, Mexico: La Sepultura Biosphere Reserve, and Montes Azules Biosphere. The karyotypes of four species, Phyllodactylus sp. 3 ( P. tuberculosus species group) (2n = 38), Holcosus festivus (Lichtenstein et von Martens, 1856) (2n = 50), Anolis lemurinus Cope, 1861 (2n = 40), and A. uniformis Cope, 1885 (2n = 29–30) are described for the first time, the last one showing a particular X 1X 1X 2X 2/X 1X 2Y condition. In Aspidoscelis deppii (Wiegmann, 1834) (2n = 50) and Anolis capito Peters, 1863 (2n = 42), we found a different karyotype from the ones previously reported for these species. Moreover, in A. capito , the cytogenetic observation is concurrent with a considerable genetic divergence (9%) at the studied mtDNA marker (MT-ND2), which is indicative of a putative new cryptic species. The skink Scincella cherriei (Cope, 1893), showed high values of genetic divergence (5.2% at 16S gene) between the specimens from Montes Azules and those from Costa Rica and Nicaragua, comparable to the values typical of sister species in skinks. A lower level of genetic divergence, compatible with an intraspecific phylogeographic structure, has been identified in Lepidophyma flavimaculatum Duméril, 1851. These new data identify taxa that urgently require more in-depth taxonomic studies especially in these areas where habitat alteration is proceeding at an alarming rate.

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                Author and article information

                Contributors
                Journal
                Comp Cytogenet
                Comp Cytogenet
                8
                urn:lsid:arphahub.com:pub:A71ED5FC-60ED-5DA3-AC8E-F6D2BB5B3573
                urn:lsid:zoobank.org:pub:C8FA3ADA-5585-4F26-9215-A520EE683979
                Comparative Cytogenetics
                Pensoft Publishers
                1993-0771
                1993-078X
                2020
                22 December 2020
                : 14
                : 4
                : 613-638
                Affiliations
                [1 ] Dipartimento di Biologia e Biotecnologie ‘Charles Darwin’, Università di Roma ‘La Sapienza’, via A. Borelli 50, CAP 00151, Rome, Italy Università di Roma ‘La Sapienza’ Rome Italy
                [2 ] Museo de Zoologia Fac. de Ciencias, Universidad Nacional Autónoma de México, A.P. 70-399, Mexico D.F. 04510, Mexico Universidad Nacional Autónoma de México Mexico Mexico
                [3 ] Mastozoologia/COZOO, Museu Paraense Emilio Goeldi, Campus de Pesquisa, Av. Perimetral 1901, CEP 66077-830, Belém, PA, Brazil Museu Paraense Emilio Goeldi Belém Brazil
                [4 ] El Colegio de la Frontera Sur. Conservación de las Biodiversidad. Carretera Panamericana y Periférico Sur s/n. C.P. 29290, San Cristóbal de las Casas, Chiapas, México El Colegio de la Frontera Sur. Conservación de las Biodiversidad San Cristóbal de las Casas Mexico
                Author notes
                Corresponding author: Riccardo Castiglia ( castiglia@ 123456uniroma1.it )

                Academic editor: L. Kupriyanova

                Article
                57765
                10.3897/CompCytogen.v14i4.57765
                7772285
                33384855
                Riccardo Castiglia, Oscar Alberto Flores-Villela, Alexandra M. R. Bezerra, Ekaterina Gornung, Flavia Annesi, Luis Antonio Muñoz-Alonso, Emanuela Solano

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Sauria
                Squamata
                Karyosystematics
                Molecular Systematics
                Taxonomy
                Neogene
                Mexico

                cytotaxomy, dna, herpetofauna, taxonomy

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