Molecular Phylogeny Supports Repeated Adaptation to Burrowing within Small-Eared Shrews Genus of Cryptotis (Eulipotyphla, Soricidae)
| Autor: | Jesús E. Maldonado, Mariel Roberts, Neal Woodman, Sunjana Supekar, Sean Boaglio, Kai He |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Range (biology)
Molecular Sequence Data Cryptotis mexicana Zoology lcsh:Medicine DNA Mitochondrial Evolution Molecular Species Specificity Phylogenetics Genus RNA Ribosomal 16S Convergent evolution Animals lcsh:Science Phylogeny Apolipoproteins B Cell Nucleus Multidisciplinary biology BRCA1 Protein Shrews lcsh:R Fossorial Genetic Variation Sequence Analysis DNA Cytochromes b Humerus biology.organism_classification Adaptation Physiological Molecular phylogenetics lcsh:Q Adaptation Research Article |
| Zdroj: | PLoS ONE, Vol 10, Iss 10, p e0140280 (2015) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | Small-eared shrews of the New World genus Cryptotis (Eulipotyphla, Soricidae) comprise at least 42 species that traditionally have been partitioned among four or more species groups based on morphological characters. The Cryptotis mexicana species group is of particular interest, because its member species inhibit a subtly graded series of forelimb adaptations that appear to correspond to locomotory behaviors that range from more ambulatory to more fossorial. Unfortunately, the evolutionary relationships both among species in the C. mexicana group and among the species groups remain unclear. To better understand the phylogeny of this group of shrews, we sequenced two mitochondrial and two nuclear genes. To help interpret the pattern and direction of morphological changes, we also generated a matrix of morphological characters focused on the evolutionarily plastic humerus. We found significant discordant between the resulting molecular and morphological trees, suggesting considerable convergence in the evolution of the humerus. Our results indicate that adaptations for increased burrowing ability evolved repeatedly within the genus Cryptotis. |
| Databáze: | OpenAIRE |
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