Nicole E. Adams, Jared J. Homola, Nicholas M. Sard, Lucas R. Nathan, Brian M. Roth, John D. Robinson, Kim T. Scribner
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引用次数: 0
摘要
入侵物种的建立和扩散与性间相互作用直接相关,因为扩散和繁殖成功率与分布、有效种群规模和种群增长有关。因此,r-选择物种建立的种群尤其难以抑制或根除。红沼泽螯虾(Procambarus clarkii)就是这样一种物种,它在全球范围内建立种群,给自然和人类社区带来了巨大的生态和经济损失。在本文中,我们利用限制性相关 DNA 测序数据为克氏原螯虾开发了一个单核苷酸多态性(SNP)位点面板。我们利用 SNP 面板在美国密歇根州东南部成功地对 1800 个个体的 930 个 SNP 进行了基因分型。基因分型数据被用于重建血统,从而确定了克氏原鲤交配系统的特征,并对环境、人口和表型预测因子与成年繁殖成功率估计值之间的关联进行了统计检验。我们利用基于基因型的系谱、体型和取样时间确定了幼体群,从而阐明了多个引入种群的繁殖表型。我们报告了每个调查水体中多重父子关系的高发生率,表明该物种存在多雄现象。我们重点介绍了新开发的快速基因组评估工具在监测种群繁殖反应、有效种群规模和持续控制过程中的扩散情况方面的应用。
Genomic Data Characterize Reproductive Ecology Patterns in Michigan Invasive Red Swamp Crayfish (Procambarus clarkii)
The establishment and spread of invasive species are directly related to intersexual interactions as dispersal and reproductive success are related to distribution, effective population size, and population growth. Accordingly, populations established by r-selected species are particularly difficult to suppress or eradicate. One such species, the red swamp crayfish (Procambarus clarkii) is established globally at considerable ecological and financial costs to natural and human communities. Here, we develop a single nucleotide polymorphism (SNP) loci panel for P. clarkii using restriction-associated DNA-sequencing data. We use the SNP panel to successfully genotype 1800 individuals at 930 SNPs in southeastern Michigan, USA. Genotypic data were used to reconstruct pedigrees, which enabled the characterization of P. clarkii's mating system and statistical tests for associations among environmental, demographic, and phenotypic predictors and adult reproductive success estimates. We identified juvenile cohorts using genotype-based pedigrees, body size, and sampling timing, which elucidated the breeding phenology of multiple introduced populations. We report a high prevalence of multiple paternity in each surveyed waterbody, indicating polyandry in this species. We highlight the use of newly developed rapid genomic assessment tools for monitoring population reproductive responses, effective population sizes, and dispersal during ongoing control efforts.
期刊介绍:
Evolutionary Applications is a fully peer reviewed open access journal. It publishes papers that utilize concepts from evolutionary biology to address biological questions of health, social and economic relevance. Papers are expected to employ evolutionary concepts or methods to make contributions to areas such as (but not limited to): medicine, agriculture, forestry, exploitation and management (fisheries and wildlife), aquaculture, conservation biology, environmental sciences (including climate change and invasion biology), microbiology, and toxicology. All taxonomic groups are covered from microbes, fungi, plants and animals. In order to better serve the community, we also now strongly encourage submissions of papers making use of modern molecular and genetic methods (population and functional genomics, transcriptomics, proteomics, epigenetics, quantitative genetics, association and linkage mapping) to address important questions in any of these disciplines and in an applied evolutionary framework. Theoretical, empirical, synthesis or perspective papers are welcome.