Data from: Isolation and characterization of nine polymorphic microsatellite markers for the deep-sea shrimp Nematocarcinus lanceopes (Crustacea: Decapoda: Caridea)

BACKGROUND: The shrimp Nematocarcinus lanceopes Bate, 1888 is found in the deep sea around Antarctica and sub-Antarctic islands. Previous studies on mitochondrial data and species distribution models provided evidence for a homogenous circum-Antarctic population of N. lanceopes. However, to analyze the fine-scale population genetic structure and to examine influences of abiotic environmental conditions on population composition and genetic diversity, a set of fast evolving nuclear microsatellite markers is required. FINDINGS: We report the isolation and characterization of nine polymorphic microsatellite markers from the Antarctic deep-sea shrimp species Nematocarcinus lanceopes (Crustacea: Decapoda: Caridea). Microsatellite markers were screened in 55 individuals from different locations around the Antarctic continent. All markers were polymorphic with 9 to 25 alleles per locus. The observed heterozygosity ranged from 0.545 to 0.927 and the expected heterozygosity from 0.549 to 0.934. CONCLUSIONS: The reported markers provide a novel tool to study genetic structure and diversity in Nematocarcinus lanceopes populations in the Southern Ocean and monitor effects of ongoing climate change in the region on the populations inhabiting these.

研究背景：1888年由Bate定名的矛形线长臂虾（Nematocarcinus lanceopes Bate, 1888）广泛分布于南极洲及亚南极岛屿周边的深海海域。既往基于线粒体数据和物种分布模型的研究表明，该物种的环南极种群具有遗传均一性。然而，若要解析其精细尺度的种群遗传结构，并探讨非生物环境条件对种群组成与遗传多样性的影响，亟需开发一套快速进化的核微卫星标记（microsatellite markers）。
研究结果：本研究分离并鉴定了南极深海虾类矛形线长臂虾（甲壳纲：十足目：真虾下目）的9个多态性微卫星标记。我们从南极洲周边不同海域的55个个体中完成了标记筛选，所有位点均表现出多态性，单个位点的等位基因数量为9至25个。观测杂合度介于0.545至0.927之间，期望杂合度介于0.549至0.934之间。
研究结论：本研究报道的微卫星标记为研究南大洋矛形线长臂虾种群的遗传结构与遗传多样性提供了全新工具，同时可用于监测该区域持续气候变化对相关栖息种群的影响。