5
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      The shrews (Cryptotis) of Colombia: What do we know about them?

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Abstract: In Colombia, shrews (Cryptotis) are represented by seven species associated with Andean, high Andean, and Paramo ecosystems of the three national Cordilleras. Of these species, five are endemic to the Andean region of the country. Despite representing the group of mammals with the highest rate of endemic species, the knowledge currently available on aspects such as natural history, distribution, and ecology is limited. This work assesses the current state of knowledge of the shrews of Colombia, discusses taxonomic issues, risks and threats related to conservation, and identifies research needs and priorities. We compile the information on shrews of Colombia available in the literature and databases. We include two of the known species of the country and one to be determined within a phylogenetic context. In general, the knowledge of the shrews of Colombia reveals the lack of ecological and genetic studies. There are unsolved taxonomic questions about the presence of certain species in the different mountain ranges of the country. There is an urgent need to generate molecular information to clarify the richness of the genus in Colombia which, according to our observations, has been underestimated. The knowledge about the shrews of Colombia is still scarce, even when some species were first described more than a hundred years ago. The need to conduct systematic studies and comprehensive morphological descriptions to clarify the richness of the shrews of Colombia is highlighted.

          Translated abstract

          Resumen: En Colombia, las musarañas (Cryptotis), están representadas por siete especies asociadas a ecosistemas andinos, altoandinos y paramunos de las tres cordilleras nacionales. De estas especies, cinco son endémicas de la región andina del país. A pesar de representar el grupo de mamíferos con mayor porcentaje de especies endémicas, el conocimiento que tenemos sobre aspectos como historia natural, distribución y ecología, es casi nulo. Este trabajo evalúa el estado actual de conocimiento de las musarañas de Colombia, discute problemas taxonómicos, riesgos y amenazas para su conservación e identifica necesidades y prioridades de investigación. Compilamos la información disponible en literatura y bases de datos sobre las musarañas de Colombia. Ubicamos a 2 de las especies conocidas en el país y una por determinar en un contexto filogenético. La tendencia general en el conocimiento de las musarañas de Colombia es hacia la ausencia de estudios ecológicos y genéticos. Además, aún persisten dudas taxonómicas con respecto a la presencia de ciertas especies en las diferentes cordilleras del país. Existe una necesidad urgente de generar información molecular para clarificar la riqueza real del género en Colombia que, de acuerdo con nuestras observaciones, ha sido subestimada. El conocimiento sobre las musarañas de Colombia es aún precario, a pesar de que algunas especies fueron descritas hace más de cien años. Se resalta la necesidad de generar estudios sistemáticos y de profundizar en descripciones morfológicas más completas que permitan clarificar la riqueza de musarañas presentes en Colombia.

          Related collections

          Most cited references76

          • Record: found
          • Abstract: found
          • Article: not found

          MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets.

          We present the latest version of the Molecular Evolutionary Genetics Analysis (Mega) software, which contains many sophisticated methods and tools for phylogenomics and phylomedicine. In this major upgrade, Mega has been optimized for use on 64-bit computing systems for analyzing larger datasets. Researchers can now explore and analyze tens of thousands of sequences in Mega The new version also provides an advanced wizard for building timetrees and includes a new functionality to automatically predict gene duplication events in gene family trees. The 64-bit Mega is made available in two interfaces: graphical and command line. The graphical user interface (GUI) is a native Microsoft Windows application that can also be used on Mac OS X. The command line Mega is available as native applications for Windows, Linux, and Mac OS X. They are intended for use in high-throughput and scripted analysis. Both versions are available from www.megasoftware.net free of charge.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            The diversification of South American murid rodents: evidence from mitochondrial DNA sequence data for the akodontine tribe

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Biogeographic regions and events of isolation and diversification of the endemic biota of the tropical Andes

              This study unifies quantitative methods with dated molecular phylogenies of different lineages to identify biogeographical regions and understand the spatial and temporal evolution of the biota in one of the most biodiverse hotspots of the planet, the tropical Andes. We found complex distribution patterns reflected in a significantly higher number of bioregions than previous regionalization work has identified. In addition, this study found evidence that bioregions’ drivers were processes of Andean uplift and mountain dispersal facilitated by temperature oscillations during the Pleistocene. Therefore, Andean bioregions were formed from a combination of vicariance and dispersal events, which occurred in different time periods. Our results will help set conservation priorities that preserve the evolutionary patterns of biodiversity. Understanding the spatial and temporal evolution of biota in the tropical Andes is a major challenge, given the region’s topographic complexity and high beta diversity. We used a network approach to find biogeographic regions (bioregions) based on high-resolution species distribution models for 151 endemic bird taxa. Then, we used dated molecular phylogenies of 14 genera to reconstruct the area history through a sequence of allopatric speciation processes. We identified 15 biogeographical regions and found 26 events of isolation and diversification within their boundaries that are independently confirmed with disjunct distributions of sister taxa. Furthermore, these events are spatially congruent with six geographical barriers related to warm and/or dry river valleys, discontinuities in elevation, and high peaks separating fauna from different range slopes. The most important barrier is the Marañon River Valley, which limits the boundaries of four bioregions and is congruent with eight phylogenetic distribution breaks, separating the Central and Northern Andes, where the most bioregions are found. We also show that many bioregions have diffuse and overlapping structures, with contact and transition zones that challenge previous conceptions of biogeographical regions as spatially simple in structure. This study found evidence that the drivers of our identified bioregions were processes of Andean uplift and mountain dispersal facilitated by temperature oscillations of the Pleistocene. Therefore, Andean bioregions were not formed from one simple biogeographical event in a certain time frame, but from a combination of vicariance and dispersal events, which occurred in different time periods.
                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                therya
                Therya
                Therya
                Asociación Mexicana de Mastozoología A. C. (La Paz, Baja California Sur, Mexico )
                2007-3364
                August 2019
                : 10
                : 2
                : 131-147
                Affiliations
                [2] Bucaramanga Santander orgnameUniversidad Industrial de Santander orgdiv1Escuela de Biología Colombia javiercolmenaresbiologo@ 123456gmail.com
                [3] orgnameUniversidad Nacional de Colombia Colombia johavi13@ 123456gmail.com
                [4] Bogotá orgnamePontificia Universidad Javeriana Colombia mountainresearch@ 123456gmail.com
                [5] Manizales Caldas orgnameUniversidad de Caldas Colombia hector.ramirez@ 123456ucaldas.edu.co
                [1] Bogotá, D. C. orgnameInstituto de Investigación de Recursos Biológicos, Alexander von Humboldt Colombia elkalexno@ 123456gmail.com
                Article
                S2007-33642019000200131
                10.12933/therya-19-760
                726fd716-8b41-43d9-b76c-948ddb515f9f

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 18 January 2019
                : 01 April 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 102, Pages: 17
                Product

                SciELO Mexico

                Categories
                Articles

                Andes,distribution,endemism,Eulipotyphla,Soricidae,taxonomy
                Andes, distribution, endemism, Eulipotyphla, Soricidae, taxonomy

                Comments

                Comment on this article