Demographic Analyses in the Japanese Captive Population of Japanese Crested Ibis (Nipponia nippon)
Demographic Analyses in the Japanese Captive Population of Japanese Crested Ibis (Nipponia nippon)
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日本圈养朱鹮种群的人口统计分析
DOI：
10.5686/jjzwm.19.57
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
H. Iwaisaki
中科院分区：
文献类型：
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作者：
Yuichi Wajiki;Y. Kaneko;T. Sugiyama;Takahisa Yamada;H. Iwaisaki
日本朱鹭（Nipponia nippon）于1981年从野外完全消失，最后一只日本本土朱鹭于2003年在圈养中死亡。然后，作为一个国家项目，日本圈养种群已经建立了5个个体来自中国圈养种群作为创始人。在这项研究中，我们估计日本圈养人口的人口参数，以预测的承载能力和数量的新引进的创始人需要保留的遗传多样性。虽然观察到一个显着的人口增长，世代长度和有效的人口规模被发现仍然是短和小，分别，这表明努力增加和保持遗传多样性，包括这些参数的增加的必要性。进一步假设5个创始者均为非近交无关，在承载量为200个个体的条件下，在没有来自中国的补充的情况下，100年后的基因多样性估计约为60%。因此，就目前的结果而言，持续引入新创始人被认为是唯一需要的，尽管未来应该进行连续的人口统计分析以合理获取人口统计参数值。
Japanese crested ibis (Nipponia nippon) completely disappeared from the wild in 1981, and the last individual indigenous to Japan died in captivity in 2003. Then, as a national project, the Japanese captive population has been established by using 5 individuals derived from the Chinese captive population as founders. In this study, we estimated demographic parameters of the Japanese captive population in order to predict the carrying capacity and the number of newly introduced founders needed to retain the genetic diversity. While a significant population growth was observed, the generation length and the effective population size were found to be still short and small, respectively, suggesting the necessity of the efforts to increase and maintain the genetic diversity including increases of these parameters. Further, assuming that the 5 founders are non-inbred and unrelated, under the condition that the carrying capacity is 200 individuals, the gene diversity after 100 years was estimated to be about 60% with no supplements from China. Therefore, as long as the current results are concerned, continuous introductions of new founders are considered to be exclusively required, although future consecutive demographic analyses should be performed for the reasonable acquisition of the demographic parameter values.