Raw mass-standardized ionomic data from seven fish species and raw transcriptome sequences for mosquitofish inhabiting the Tar Creek Superfund Site in OK, USA

Our understanding of the mechanisms mediating the resilience of organisms to environmental change remains lacking. Heavy metals negatively affect processes at all biological scales, yet organisms inhabiting contaminated environments must maintain homeostasis to survive. Tar Creek in Oklahoma, USA, contains high concentrations of heavy metals and an abundance of Western mosquitofish (Gambusia affinis), though several fish species persist at lower frequency. To test hypotheses about the mechanisms mediating the persistence and abundance of mosquitofish in Tar Creek, we integrated ionomic data from seven resident fish species and transcriptomic data from mosquitofish to test hypotheses about the mechanisms mediating the persistence of mosquitofish in Tar Creek. We predicted that mosquitofish minimize uptake of heavy metals more than other Tar Creek fish inhabitants and induce transcriptional responses to detoxify metals that enter the body, allowing them to persist in Tar Creek at higher d...

目前学界对调控生物体抵御环境变化的抗逆性机制仍缺乏足够认知。重金属会对所有生物层级的生命过程产生负面影响，而栖息于污染环境中的生物体必须维持体内稳态方能存活。美国俄克拉荷马州的塔尔溪（Tar Creek）重金属浓度极高，境内分布有大量西部食蚊鱼（Gambusia affinis），同时另有少量其他鱼类物种得以存续。为验证调控塔尔溪内食蚊鱼存续与种群丰度的相关机制假说，本研究整合了7种本土栖息鱼类的离子组学数据（ionomic data）与食蚊鱼的转录组学数据（transcriptomic data），以检验食蚊鱼在塔尔溪存续的相关机制假说。本研究推测，相较于塔尔溪内的其他鱼类，食蚊鱼能够更高效地减少重金属摄入，并通过启动转录应答反应对进入体内的重金属进行解毒，从而使其得以在塔尔溪以更高的种群密度存续……