Yoon Hyun-Ju, Lee Mu-Yeong, Jeon Hye-Sook, An Junghwa, Yoon Jongmin
Eco-institute for Oriental Stork, Korea National University of Education, Cheongju, South Korea.
National Institute of Biological Resources, Incheon, South Korea.
Zoolog Sci. 2023 Aug;40(4):284-291. doi: 10.2108/zs220076.
Captive propagation and reintroduction are the major steps in the ex-situ conservation of locally extirpated endangered species in a historical region. In a species restoration project conducted in South Korea, we examined temporal changes in demographics and genetic diversity of oriental storks (). Demographic and genetic data from 1996-2018 were analyzed for 80% of all captive and recently reintroduced individuals. Founder establishment and pair formation induced increases in population size and genetic diversity during the early stage of captive propagation. The degree of genetic diversity was found to become saturated and stable with long-term captive propagation. However, this might be a concern for future genetic diversity of both captive and reintroduced populations simultaneously due to the extraction of captive populations at the early stage of reintroduction. Our findings suggest that periodic evaluation of genetic diversity and selection for releasing individuals, using effective genetic markers, would assist in balancing the genetic diversity of the captive and reintroduced oriental storks at the early stage of reintroduction.
圈养繁殖和重新引入是在一个历史区域内对当地灭绝的濒危物种进行迁地保护的主要步骤。在韩国开展的一个物种恢复项目中，我们研究了东方白鹳种群数量统计和遗传多样性的时间变化。对1996年至2018年期间所有圈养和最近重新引入个体的80%进行了种群数量统计和遗传数据分析。在圈养繁殖的早期阶段，奠基者的建立和配对导致了种群规模和遗传多样性的增加。随着长期圈养繁殖，遗传多样性程度被发现趋于饱和并稳定下来。然而，由于在重新引入的早期阶段从圈养种群中抽取个体，这可能同时成为圈养种群和重新引入种群未来遗传多样性的一个问题。我们的研究结果表明，利用有效的遗传标记定期评估遗传多样性并选择放归个体，将有助于在重新引入的早期阶段平衡圈养和重新引入的东方白鹳的遗传多样性。
