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Historical, human, and environmental drivers of genetic diversity in the red swamp crayfish (Procambarus clarkii) invading the Iberian Peninsula
Freshwater Biology ( IF 2.7 ) Pub Date : 2020-04-27 , DOI: 10.1111/fwb.13513 Lucía Acevedo‐Limón 1 , Francisco J. Oficialdegui 2 , Marta I. Sánchez 3 , Miguel Clavero 1
中文翻译:
入侵伊比利亚半岛的红色沼泽小龙虾(Procambarus clarkii)的遗传多样性的历史,人类和环境驱动因素
更新日期:2020-04-27
Freshwater Biology ( IF 2.7 ) Pub Date : 2020-04-27 , DOI: 10.1111/fwb.13513 Lucía Acevedo‐Limón 1 , Francisco J. Oficialdegui 2 , Marta I. Sánchez 3 , Miguel Clavero 1
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- Patterns of genetic diversity in invasive populations can be modulated by a range of factors acting at different stages of the invasion process, including the genetic composition of the source population(s), the introduction history (e.g. propagule pressure), the environmental suitability of recipient areas, and the features of secondary introductions.
- The North American red swamp crayfish, Procambarus clarkii, is one of the most widely introduced freshwater species worldwide. It was legally introduced into Spain twice, near the city of Badajoz in 1973 and in the Guadalquivir marshes in 1974. Thereafter the species rapidly colonised almost the entire Iberian Peninsula.
- We used seven nuclear microsatellites to describe the genetic diversity and structure of 28 locations distributed across the Iberian Peninsula and to explain the expansion process of the red swamp crayfish. Additionally, we analysed the relationship between environmental suitability and genetic diversity of the studied locations.
- The red swamp crayfish had a clear spatial genetic structure in the Iberian Peninsula, probably determined by the two independent introduction events in the 1970s, which produced two main clusters separated spatially, one of which was dominant in Portugal and the other in Spain.
- The human‐mediated dispersal process seemed to have involved invasion hubs, hosting highly genetically diverse areas and acting as sources for subsequent introductions. Genetic diversity also tended to be higher in more suitable environments across the Iberian Peninsula.
- Our results showed that the complex and human‐mediated expansion of the red swamp crayfish in the Iberian Peninsula has involved several long‐ and short‐distance movements and that both ecological and anthropogenic factors have shaped the genetic diversity patterns resulting from this invasion process. Early detection of potential invasion hubs may help to halt multiple short‐distance translocations and thus the rapid expansion of highly prolific invasive species over non‐native areas.
中文翻译:
入侵伊比利亚半岛的红色沼泽小龙虾(Procambarus clarkii)的遗传多样性的历史,人类和环境驱动因素
- 可以通过在入侵过程的不同阶段起作用的一系列因素来调节入侵种群的遗传多样性模式,这些因素包括来源种群的遗传组成,引进历史(例如繁殖压力),受体的环境适应性。领域,以及辅助介绍的功能。
- 北美红沼泽小龙虾Procambarus clarkii是全球引进最广泛的淡水物种之一。它两次被合法地引入西班牙,1973年在巴达霍斯市附近,1974年在瓜达基维尔沼泽地。此后该物种迅速在几乎整个伊比利亚半岛定居。
- 我们使用七个核微卫星描述了分布在伊比利亚半岛上28个地点的遗传多样性和结构,并解释了红色沼泽小龙虾的扩张过程。此外,我们分析了环境适宜性与研究地点的遗传多样性之间的关系。
- 红沼泽小龙虾在伊比利亚半岛具有清晰的空间遗传结构,这可能是由1970年代的两次独立引入事件决定的,该事件产生了两个在空间上分开的主要集群,其中一个在葡萄牙占主导地位,另一个在西班牙占优势。
- 人类介导的传播过程似乎涉及到入侵中心,拥有高度遗传多样性的地区,并作为后续引进的来源。在整个伊比利亚半岛更适合的环境中,遗传多样性也趋向于更高。
- 我们的结果表明,伊比利亚半岛上的红色沼泽小龙虾复杂且由人为介导的扩展涉及多次长距离和短距离运动,并且生态和人为因素共同影响了这一入侵过程所造成的遗传多样性格局。尽早发现潜在的入侵中心可能有助于制止多个短距离易位,从而在非本地地区迅速扩展高度繁殖的入侵物种。