Genome-Wide Population Structure and Selection Signatures of Yunling Goat Based on RAD-seq.

Animal diseases impose a huge burden on the countries where diseases are endemic. Conventional control strategies of vaccines and veterinary drugs are to control diseases from a pharmaceutical perspective. Another alternative approach is using pre-existing genetic disease resistance or tolerance.

Maternal origins, population structure and demographic history of ten Chinese indigenous goat breeds from Yunnan.

Yunnan as a frontier zone that connects China with South and Southeast Asia, has 11 well-recognized goat breeds. However, the knowledge about maternal origins, population structure and demographic history of Chinese indigenous goats from Yunnan is limited. In this study, we analysed a 481-bp fragment of first hypervariable segment (HVSI) of the mitochondrial DNA (mtDNA) control region sequences of 749 individuals from 10 Yunnan indigenous goat breeds, of which 556 sequences were newly determined.

[Spatial Distribution of Perfluoroalkyl Acids and Transformation of Their Precursors in River Water Samples and Effluents of Wastewater Treatment Plans in a Typical Tourism City].

Perfluoroalkyl acids (PFAAs) are commonly detected in various environmental media and can cause potential risks to the ecological environment and human health. The levels and spatial distribution of 15 types of PFAAs and 3 types of PFAA precursors in the main river water and effluents of three sewage treatment plants (STPs) of Rizhao City were systematically investigated based on methods such as ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), solid phase extraction and enrichment, and hydroxyl radical (·OH) oxidation to explore the pollution characteristics of PFAAs and the contribution of their precursors to environmental pollution in different water bodies of typical tourist cities. The results of this study reveal that 15 types of PFAAs and only perfluorooctane sulfoneamide (FOSA) among the precursors are detectable in most of the water samples.