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| DOI | 10.1111/mec.17274 |
| A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies | |
| 发表日期 | 2024 |
| ISSN | 0962-1083 |
| EISSN | 1365-294X |
| 起始页码 | 33 |
| 结束页码 | 5 |
| 卷号 | 33期号:5 |
| 英文摘要 | Overharvest can severely reduce the abundance and distribution of a species and thereby impact its genetic diversity and threaten its future viability. Overharvest remains an ongoing issue for Arctic mammals, which due to climate change now also confront one of the fastest changing environments on Earth. The high-arctic Svalbard reindeer (Rangifer tarandus platyrhynchus), endemic to Svalbard, experienced a harvest-induced demographic bottleneck that occurred during the 17-20th centuries. Here, we investigate changes in genetic diversity, population structure, and gene-specific differentiation during and after this overharvesting event. Using whole-genome shotgun sequencing, we generated the first ancient and historical nuclear (n = 11) and mitochondrial (n = 18) genomes from Svalbard reindeer (up to 4000 BP) and integrated these data with a large collection of modern genome sequences (n = 90) to infer temporal changes. We show that hunting resulted in major genetic changes and restructuring in reindeer populations. Near-extirpation followed by pronounced genetic drift has altered the allele frequencies of important genes contributing to diverse biological functions. Median heterozygosity was reduced by 26%, while the mitochondrial genetic diversity was reduced only to a limited extent, likely due to already low pre-harvest diversity and a complex post-harvest recolonization process. Such genomic erosion and genetic isolation of populations due to past anthropogenic disturbance will likely play a major role in metapopulation dynamics (i.e., extirpation, recolonization) under further climate change. Our results from a high-arctic case study therefore emphasize the need to understand the long-term interplay of past, current, and future stressors in wildlife conservation. |
| 英文关键词 | ancient DNA; bottleneck; conservation genomics; genomic erosion; population genomics; Svalbard reindeer |
| 语种 | 英语 |
| WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
| WOS类目 | Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology |
| WOS记录号 | WOS:001149967500001 |
| 来源期刊 | MOLECULAR ECOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/289185 |
| 作者单位 | Norwegian University of Science & Technology (NTNU); Norwegian University of Science & Technology (NTNU); Greenland Institute of Natural Resources; Norwegian Institute Nature Research; Norwegian Polar Institute; Norwegian Institute Nature Research; Norwegian University of Science & Technology (NTNU) |
| 推荐引用方式 GB/T 7714 | . A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies[J],2024,33(5). |
| APA | (2024).A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies.MOLECULAR ECOLOGY,33(5). |
| MLA | "A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies".MOLECULAR ECOLOGY 33.5(2024). |
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