Sex-Determination Mechanisms among Populations within Cryptic Species Complex of Calotes (Squamata: Agamidae: Draconinae)
| Autor: | Tulyawat Prasongmaneerut, Dianne Gleeson, Arthur Georges, Shayer Mahmood Ibney Alam, Stephen D. Sarre, Tariq Ezaz, Kornsorn Srikulnath |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | DNA Volume 1 Issue 2 Pages 6-67 |
| ISSN: | 2673-8856 |
| DOI: | 10.3390/dna1020006 |
| Popis: | Sex-determination mechanisms and sex chromosomes are known to vary among reptile species and, in a few celebrated examples, within populations of the same species. The oriental garden lizard, Calotes versicolor, is one of the most intriguing species in this regard, exhibiting evidence of multiple sex-determination modes within a single species. One possible explanation for this unusual distribution is that in C. versicolor, different modes of sex determination are confined to a particular population or a species within a cryptic species complex. Here, we report on a population genetic analysis using SNP data from a methylation-sensitive DArT sequencing analysis and mitochondrial DNA data obtained from samples collected from six locations: three from Bangladesh and three from Thailand. Our aim was to determine whether C. versicolor is best described as a single species with multiple lineages or as multiple species, as well as if its sex-determination mechanisms vary within or between species. We present evidence that the latter possibility is the case and that C. versicolor comprises a complex of cryptic species. We also identify sex-linked markers within these species and use them to identify modes of sex determination. Overall, our results suggest that different sex-determination modes have evolved among closely related species and within populations of Agamid lizards. |
| Databáze: | OpenAIRE |
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