Population Connectivity Predicts Vulnerability to White-Nose Syndrome in the Chilean Myotis (Myotis chiloensis) - A Genomics Approach
| Autor: | Anti Vasemägi, Anna S. Blomberg, David L. J. Vendrami, Joseph S. Johnson, Tiina Sävilammi, Veronica Yung, Gonzalo Ossa, Thomas M. Lilley |
|---|---|
| Přispěvatelé: | Zoology |
| Rok vydání: | 2020 |
| Předmět: |
TIERRA-DEL-FUEGO
0106 biological sciences chiroptera MITOCHONDRIAL-DNA Population genetics GEOMYCES-DESTRUCTANS Population Species distribution TADARIDA-BRASILIENSIS Genomics Myotis myotis QH426-470 PSEUDOGYMNOASCUS-DESTRUCTANS 010603 evolutionary biology 01 natural sciences Gene flow Myotis chiloensis 03 medical and health sciences Tadarida brasiliensis Genetics (medical genetics to be 30107 and agricultural genetics to be 40402) Geographical distance Pseudogymnoascus destructans GENE FLOW Genetics education Molecular Biology population connectivity 1172 Environmental sciences Genetics (clinical) 030304 developmental biology 0303 health sciences education.field_of_study CLIMATE-CHANGE biology Ecology disease spread 1184 Genetics developmental biology physiology FREE-TAILED BAT Last Glacial Maximum population structure Torpor 15. Life on land biology.organism_classification SPREAD |
| Zdroj: | G3: Genes, Genomes, Genetics, Vol 10, Iss 6, Pp 2117-2126 (2020) |
| ISSN: | 2160-1836 |
| Popis: | Despite its peculiar distribution, the biology of the southernmost bat species in the world, the Chilean myotis (Myotis chiloensis), has garnered little attention so far. The species has a north-south distribution of c. 2800 km, mostly on the eastern side of the Andes mountain range. Use of extended torpor occurs in the southernmost portion of the range, putting the species at risk of bat white-nose syndrome, a fungal disease responsible for massive population declines in North American bats. Here, we examined how geographic distance and topology would be reflected in the population structure of M. chiloensis along the majority of its range using a double digestion RAD-seq method. We sampled 66 individuals across the species range and discovered pronounced isolation-by-distance. Furthermore, and surprisingly, we found higher degrees of heterozygosity in the southernmost populations compared to the north. A coalescence analysis revealed that our populations may still not have reached secondary contact after the Last Glacial Maximum. As for the potential spread of pathogens, such as the fungus causing WNS, connectivity among populations was noticeably low, especially between the southern hibernatory populations in the Magallanes and Tierra del Fuego, and more northerly populations. This suggests the probability of geographic spread of the disease from the north through bat-to-bat contact to susceptible populations is low. The study presents a rare case of defined population structure in a bat species and warrants further research on the underlying factors contributing to this. See the graphical abstract here. https://doi.org/10.25387/g3.12173385 |
| Databáze: | OpenAIRE |
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