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环境科学::环境化学 17 地球科学 4 物理化学 4
环境工程::水处理工程 4 环境科学 4 主要研究方向::海洋生物学 3
光学工程 3 地球科学::海洋科学 3 地球科学::海洋科学::海洋化学 3
地球科学::海洋科学::海洋生物学 3 主要研究方向::海洋生态与环境科学 2 化学 2
化学::分析化学 2 固体力学 2 植物学 2
环境工程::纳米材料与减排技术 2 环境科学::环境水质学 2 环境科学::环境科学技术基础学科 2
生物材料::生物基化学品 2 能源应用技术::仿生能源系统 2 能源应用技术::热化学转化 2
药物化学 2 Conservation genetics of L. decora: The nucleotide sequences from three chloroplast DNA (cpDNA) regions (the rpl16 intron, trnQ-5’rps16 intergenic spacer and rpl32-trnL intergenic spacer) and two nuclear gene (GAPDH and GBSSI) were selected to characterize the genetic structure and phylogeography of this species. Eleven populations were sampled across the distribution range of L. decora in China. Low levels of cpDNA genetic diversity were found in this species and within populations, with the identification of 2 haplotypes in a total of 2745 bp (cpDNA: π = 0.00102, Hd = 0.468, HT = 0.480), while the levels of genetic diversity revealed by the nuclear gene GAPDH and GBSSI (GAPDH: π = 0.00237, Hd = 0.773, HT = 0.807; GBSSI: π = 0.00167, Hd = 0.751, HT = 0.790) were relatively high, indicating that random losses of genetic polymorphisms from populations may have occurred recently. Relatively high genetic differentiation for both markers (cpDNA: GST = 0.899, FST = 0.893; GAPDH: GST = 0.309, FST = 0.432; GBSSI: GST = 0.274, FST = 0.263) were detected at the wide-species level. Two cpDNA haplotypes, twelve GAPDH haplotypes and ten GBSSI haplotypes were recovered, respectively. Almost every population except the population SP was fixed for one cpDNA haplotype, causing no variation within the populations. Several nuclear haplotypes were distributed widely in most populations. These results may be mainly explained by long-term fragmentation and the limited gene flow caused by geographic isolation among populations. The mismatch distribution analyses and neutrality tests provided no evidence for a recent population expansion in L. decora. The time of all GAPDH haplotypes coalesced to the most recent common ancestor was dated to between 0.46 (95% CI 0.14-0.89)-0.65 (95% CI 0.18-1.22)mya, which predates the LGM. In situ shrinking or extinction might have occurred to L. decora during the glacial ages and L. decora populations did not retreat to common refugia or migrated backwards. Based on the genetic diversity and uniqueness of the populations, conservation strategies are discussed for this endangered species.2. 1 主要研究方向 1
主要研究方向::海洋地质与环境 1 主要研究方向::海洋生物技术 1 养殖生态学 1
农田水利 1 化学::化学其他学科 1 化学::有机化学 1
化学::物理化学 1 化学工程 1 土壤学 1
地球科学/海洋科学/海洋生物学 1 地球科学::地球化学 1 地球科学::地质学 1
地球科学::海洋科学::海洋地质学 1 地球科学::海洋科学::海洋调查与监测 1 地球科学::海洋科学::物理海洋学 1
多相催化 1 工学 1 工程力学 1
工程力学 流体力学 1 摩擦化学与物理 1 摩擦学与表面工程 1
材料科学与物理化学 1 水土保持与荒漠化防治 1 海洋生物基因组学 1
海洋生物学 1 润滑油纳米添加剂 1 物理海洋学 1
环境科学::环境工程学 1 环境科学::环境科学技术其他学科 1 环境科学技术::环境科学技术基础学科::环境化学 1
生态学 1 生物催化与转化::生物制氢与沼气 1 生物学 1
生物学::植物学::植物生态学 1 生物学::植物学::植物生理学 1 生物学::生态学::种群生态学 1
系统生态学::生态毒理学 1 聚合物润滑材料 1 胶体与界面化学 1
自然地理学 1 计算机科学技术::人工智能 1 计算机科学技术::人工智能::计算机神经网络 1
金属材料 1 高分子复合材料 1

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