Genomic‐wide sequencing reveals remarkable connection between widely disjunct populations of the internationally threatened bog buck moth,Insect Conservation and Diversity

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Genomic‐wide sequencing reveals remarkable connection between widely disjunct populations of the internationally threatened bog buck moth
Insect Conservation and Diversity ( IF 3.2 ) Pub Date : 2020-07-08 , DOI: 10.1111/icad.12432
Julian R. Dupuis ₁ , Scott M. Geib ₂ , Christian Schmidt ₃ , Daniel Rubinoff ₄

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Rare, threatened species often suffer from habitat fragmentation, which leads to smaller populations vulnerable to negative impacts including inbreeding depression and collapse of metapopulation dynamics. Therefore, understanding the population structure and relationships of each population of a threatened species is critical for prioritising habitat conservation and reintroduction efforts.
The bog buck moth (Hemileuca sp.) is a lineage previously recognised as several populations of conservation concern in New York state and the Province of Ontario. Recent genomic research discovered that bog buck moth from New York was a highly divergent, distinct entity compared to the group's diversity across North America.
Nevertheless, the Canadian populations have not been evaluated and are geographically disjunct from the nearest New York population by ~170 km. As New York populations are in sharp decline, confirming that the relatively robust Ontario populations are conspecific, and understanding their relationship to New York populations, is a conservation priority.
We integrated genomic data from an Ontario population into a broader dataset containing populations from across the range of the species group. Bog buck moth populations from Ontario and New York were identified as reciprocally monophyletic conspecifics, and other ecologically similar populations of Hemileuca from the western Great Lakes region are confirmed to be a different, widespread species.
These results corroborate the restricted range of the bog buck moth and suggest that Ontario and New York populations have not been in recent contact. Therefore, reintroduction efforts must be developed in the context of this population structure.

中文翻译：

全基因组测序揭示了受国际威胁的大型蛾的广泛分离种群之间的显着联系

稀有的，受威胁的物种经常遭受栖息地破碎的困扰，这导致较小的种群容易受到负面影响，包括近交衰退和迁徙种群动态的崩溃。因此，了解受威胁物种的种群结构和每个种群的关系对于优先考虑栖息地保护和重新引入工作至关重要。
沼泽蛾（Hemileuca sp。）是一种血统，以前被认为是纽约州和安大略省的几个有保护意义的种群。最近的基因组研究发现，与整个北美的杂种相比，纽约的沼泽地飞蛾是一个高度发散的独特实体。
但是，加拿大人口尚未得到评估，与最近的纽约人口在地理上相距约170公里。由于纽约人口急剧减少，因此确认相对强壮的安大略人口是同种的，并且了解其与纽约人口的关系是一项保护工作。
我们将来自安大略种群的基因组数据整合到一个更广泛的数据集中，该数据集中包含了该物种组范围内的种群。来自安大略省和纽约的大水獭蛾种群被确定为相互单系的物种，来自西部大湖地区的Hemileuca的其他生态相似的种群也被证实是不同的，广泛的物种。
这些结果证实了沼泽蛾的活动范围有限，表明安大略和纽约的种群最近没有接触过。因此，必须在这种人口结构的背景下进行重新引进的努力。

更新日期：2020-07-08

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