التفاصيل البيبلوغرافية
| العنوان: |
Not out of the woods yet: signatures of the prolonged negative genetic consequences of a population bottleneck in a rapidly re-expanding wader, the black-faced spoonbill Platalea minor |
| المؤلفون: |
Li, Shou-Hsien, Liu, Yang, Yeh, Chia-Fen, Fu, Yuchen, Yeung, Carol K. L., Lee, Chun-cheng, Chiu, Chi-Cheng, Kuo, Tung Hui, Chan, FT, Chen, Yu-Chia, Ko, Wen-ya, Yao, Chen-te |
| بيانات النشر: |
Authorea, Inc. |
| سنة النشر: |
2021 |
| المجموعة: |
The Winnower (via CrossRef) |
| الوصف: |
The long-term persistence of a population which has suffered a bottleneck partly depends on how historical demographic dynamics impacted its genetic diversity and the accumulation of deleterious mutations. Here we provide genomic evidence for the detrimental genetic effect of a recent population bottleneck in the endangered black-faced spoonbill ( Platalea minor ) even after its rapid population recovery. Our population genomic data suggest that the bird’s effective population size, N , had been relatively stable (7,500-9,000) since the end of the last glacial maximum; however, a recent brief yet severe bottleneck ( N = 20) around the 1940s wiped out more than 99% of its historical N in roughly three generations. By comparing it with its sister species, the royal spoonbill ( P. regia ) whose conservation status is of lesser concern, we found that despite a more than 15-fold population recovery since 1988, genetic drift has led to higher levels of inbreeding (7.4 times more runs of homozygosity longer than 100 Kb) in the black-faced spoonbill than in the royal spoonbill genome. Although the two spoonbills have similar levels of genome-wide nucleotide diversity and heterozygosity, because of relaxed purifying selection, individual black-faced spoonbills carry 3% more nonsynonymous substitutions than royal spoonbills each of which is 7% more deleterious. Our results imply that the persistence of a threatened species cannot be inferred from a recovery in its population. They also highlight the necessity of continually using genomic indices to monitor its genetic health and employing all possible measures to assure its long-term persistence in the ever-changing environment. |
| نوع الوثيقة: |
other/unknown material |
| اللغة: |
unknown |
| DOI: |
10.22541/au.162611261.13630609/v1 |
| الإتاحة: |
https://doi.org/10.22541/au.162611261.13630609/v1Test |
| رقم الانضمام: |
edsbas.7E7DE8D4 |
| قاعدة البيانات: |
BASE |
