Genomic analysis of demographic history and ecological niche modeling in the endangered Chinese Grouse Tetrastes sewerzowi
Autor: | Jacob Höglund, Kai Song, Bin Gao, Yue-Hua Sun, Ying Xin Jiang, Yun Fang, Peter Halvarsson |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
Demographic history China lcsh:QH426-470 lcsh:Biotechnology Population Tetrastes sewerzowi Biology Tibet 01 natural sciences 03 medical and health sciences Chinese grouse Effective population size Genetics (medical genetics to be 30107 and agricultural genetics to be 40402) lcsh:TP248.13-248.65 Genetics Animals Whole genome sequence MaxEnt Galliformes Genetik education Ecosystem Phylogeny 030304 developmental biology Ecological niche 0303 health sciences education.field_of_study Ecology Population size Genetic Variation Genomics biology.organism_classification Environmental niche modelling Phylogeography lcsh:Genetics Threatened species Qinghai-Tibet plateau 010606 plant biology & botany Biotechnology Tetrastes Research Article |
Zdroj: | BMC Genomics, Vol 21, Iss 1, Pp 1-9 (2020) BMC Genomics |
Popis: | Background The Quaternary had worldwide consequences in forming the contemporary diversity of many populations, species and communities, which is characterized by marked climatic oscillations between glacial and interglacial periods. The origin and evolution of biodiversity in mountainous areas are highly dependent on historical orogenesis and associated climatic changes. The Chinese grouse Tetrastes sewerzowi is a forest-dwelling species endemic to the mountains to the east of the Qinghai–Tibet Plateau, which has been listed as Near Threatened with a decreasing trend by the IUCN because of ongoing deforestation and fragmentation of coniferous forests. It is important to place current population status into a broader ecological and evolutionary context to understand their demographic history. Results Analyses of the Chinese Grouse genome revealed fluctuations throughout the Pleistocene in effective population size. Populations decreased during early to middle Pleistocene but showed an expansion during late Pleistocene which was then followed by a sharp decline during the last glacial maximum (LGM). Ecological niche modeling indicated that a suitable habitat shift between high altitude regions to low altitude regions was due to a changing climate. This result parallels patterns of population size change in Chinese Grouse estimated from PSMC modelling, which suggested an expansion in population size from the last interglacial period (LIG) and then a peak and a bottleneck occurring at the last glacial maximum (LGM). Furthermore, the present-day distribution of Chinese Grouse is greatly reduced and fragmented. It will likely become even more fragmented in the future since coniferous forest cover is threatened in the region of their distribution and the availability of such habitat restricts their ecological niche. Conclusions The Chinese Grouse have experienced substantial population size changes from the beginning to the LIG and reached a peak before the LGM. A sharp decrease and bottleneck occurred during the LGM, when the coniferous forests were subjected to extensive loss. The results inferred from the whole genome sequencing and species distribution models both support historical population fluctuations. The distribution of the Chinese Grouse is strongly dependent on the coniferous forest cover. To protect the fragmented coniferous forests is an essential action to protect the Chinese Grouse. |
Databáze: | OpenAIRE |
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