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High haplotype diversity with fine‐scale structure in a recently established population of an endangered orchid
Plant Species Biology ( IF 1.1 ) Pub Date : 2020-06-12 , DOI: 10.1111/1442-1984.12276 Karl J. Duffy 1 , Donata Cafasso 1 , Ming‐Xun Ren 2 , Salvatore Cozzolino 1
Plant Species Biology ( IF 1.1 ) Pub Date : 2020-06-12 , DOI: 10.1111/1442-1984.12276 Karl J. Duffy 1 , Donata Cafasso 1 , Ming‐Xun Ren 2 , Salvatore Cozzolino 1
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New populations of endangered plants may establish outside of protected areas if a suitable habitat becomes available. However, it is unclear whether such populations are genetically uniform, as a result of a founder effect, or whether they contain genetic variation resulting from continuous gene flow from source populations, and subsequent recruitment after establishment. We addressed this by examining haplotype variation in the endangered orchid, Anacamptis robusta, which has formed a new population outside of its protected area within the past 20 years. To assess population growth, the number of A. robusta flowering plants were counted every year for 22 years in both the new population and populations within the reserve. Haplotype diversity and fine‐scale structure were examined with spatial autocorrelation analysis, both in the new population and representative populations from the protected area. The number of flowering individuals in the new population increased from 9 to 2,277 between 2003 and 2012, whereas within the reserve flowering population sizes varied between years. Seventeen of 23 haplotypes detected for A. robusta were detected in the new population, with seven of these occurring more frequently in the new population than reserve populations. In the new population, there was strong fine‐scale spatial structure of haplotypes, similar to patterns found in large populations from the protected area, suggesting multiple colonization events and subsequent local recruitment. This highlights that ongoing demographic and genetic monitoring of plant populations is vital to improve our understanding of population colonization and the conservation of narrow endemics.
中文翻译：
最近确定的濒危兰花种群中单倍型多样性高，结构精细
如果有合适的栖息地，新的濒危植物种群可能会在保护区之外建立。但是，尚不清楚这些基因种群是否由于建立者效应而在遗传上是统一的，还是它们是否包含源于源种群的连续基因流动以及建立后随后的募集而产生的遗传变异。为了解决这个问题，我们研究了濒临灭绝的兰花Anacamptisrobust的单倍型变异，该兰花在过去20年中已在其保护区之外形成了新种群。为了评估人口增长，罗非鱼的数量在新种群和保护区内的种群中，每年都有22年的开花植物计数。通过空间自相关分析，对新种群和保护区代表性种群的单体型多样性和精细尺度结构进行了研究。在2003年至2012年之间，新种群中的开花个体数量从9增至2277，而在储备种群中，开花个体数量随年份而变化。23个单倍体十七检测到A.罗布斯塔在新人群中被发现，其中有七个在新人群中比在保留人群中更常见。在新种群中，存在很强的单倍型精细尺度空间结构，类似于在保护区的大种群中发现的模式，这表明发生了多次定殖事件并随后在当地招募。这突出表明，对植物种群进行持续的人口统计学和遗传监测对于增进我们对种群定植和狭narrow地方病保护的认识至关重要。
更新日期：2020-06-12
中文翻译：
最近确定的濒危兰花种群中单倍型多样性高，结构精细
如果有合适的栖息地，新的濒危植物种群可能会在保护区之外建立。但是，尚不清楚这些基因种群是否由于建立者效应而在遗传上是统一的，还是它们是否包含源于源种群的连续基因流动以及建立后随后的募集而产生的遗传变异。为了解决这个问题，我们研究了濒临灭绝的兰花Anacamptisrobust的单倍型变异，该兰花在过去20年中已在其保护区之外形成了新种群。为了评估人口增长，罗非鱼的数量在新种群和保护区内的种群中，每年都有22年的开花植物计数。通过空间自相关分析，对新种群和保护区代表性种群的单体型多样性和精细尺度结构进行了研究。在2003年至2012年之间，新种群中的开花个体数量从9增至2277，而在储备种群中，开花个体数量随年份而变化。23个单倍体十七检测到A.罗布斯塔在新人群中被发现，其中有七个在新人群中比在保留人群中更常见。在新种群中，存在很强的单倍型精细尺度空间结构，类似于在保护区的大种群中发现的模式，这表明发生了多次定殖事件并随后在当地招募。这突出表明，对植物种群进行持续的人口统计学和遗传监测对于增进我们对种群定植和狭narrow地方病保护的认识至关重要。
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