期刊
EVOLUTIONARY APPLICATIONS
卷 10, 期 1, 页码 102-117出版社
WILEY
DOI: 10.1111/eva.12432
关键词
connectivity; dispersal; outlier loci; population genomics; population structure; RADseq; sea scallop; single nucleotide polymorphism
资金
- NSERC
- Genomic Resource Development Initiative from Fisheries and Oceans Canada
Understanding patterns of dispersal and connectivity among marine populations can directly inform fisheries conservation and management. Advances in high-throughput sequencing offer new opportunities for estimating marine connectivity. We used restriction-site-associated DNA sequencing to examine dispersal and realized connectivity in the sea scallop Placopecten magellanicus, an economically important marine bivalve. Based on 245 individuals sampled rangewide at 12 locations from Newfoundland to the Mid-Atlantic Bight, we identified and genotyped 7163 single nucleotide polymorphisms; 112 (1.6%) were identified as outliers potentially under directional selection. Bayesian clustering revealed a discontinuity between northern and southern samples, and latitudinal clines in allele frequencies were observed in 42.9% of the outlier loci and in 24.6% of neutral loci. Dispersal estimates derived using these clines and estimates of linkage disequilibrium imply limited dispersal; 373.1 +/- 407.0km (mean +/- SD) for outlier loci and 641.0 +/- 544.6km (mean +/- SD) for neutral loci. Our analysis suggests restricted dispersal compared to the species range (>2000km) and that dispersal and effective connectivity differ. These observations support the hypothesis that limited effective dispersal structures scallop populations along eastern North America. These findings can help refine the appropriate scale of management and conservation in this commercially valuable species.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据