菲律宾本土猪的遗传多样性和种群结构分析突出了保护的五个优先种群
Joy B Banayo1,2, Kathlyn Louise V Manese2, Kaito O Furusho2
1Animal Genetics and Breeding, Department of Animal Science, Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan.
Ecology and evolution
|November 3, 2023
概括
菲律宾本土猪 (PhNP) 在遗传上是不同的,并在岛屿上有着多样性. 对于独特的PhNP种群来说,即时的保护工作至关重要,特别是那些有效规模小的种群,以保护这一宝贵的遗传资源.
科学领域:
- 动物遗传学动物遗传学
- 保护生物学 保护生物学
- 人口遗传学 人口遗传学
背景情况:
- 菲律宾本土猪 (PhNP) 代表了Sus scrofa物种中独特的遗传资源,包括各种血统和杂交物种.
- 了解多个岛屿和省份的PhNPs的种群结构和遗传多样性,对于有效的保护战略至关重要.
- 之前的研究还没有全面评估菲律宾各地的PhNPs遗传景观.
研究的目的:
- 调查各种菲律宾本土猪种群的种群结构和遗传多样性.
- 确定特定的PhNP种群,这些种群需要优先考虑保护工作.
- 为了比较PhNPs的遗传构成与菲律宾发现的跨境品种.
主要方法:
- 使用20个ISAG-FAO推的微卫星标记物对7个PhNP种群和4个跨境品种进行分析.
- 应用贝叶斯聚类和Nei的D遗传距离来评估人口差异化.
- 评估遗传多样性参数,包括异构性 (Ho),等位数 (Na) 和近亲繁殖系数 (Fis).
主要成果:
- 在本地PhNPs和跨境品种之间证实了强大的遗传差异化.
- PhNPs表现出高的异构性 (Ho:0.737) 和等位基因数 (Na:7.771),具有较低的内生系数 (Fis: -0.040-0.125).
- 贝叶斯聚类揭示了岛屿,区域和人口层面上不同的遗传结构,并配对F'st值表明某些PhNP种群之间的显著遗传距离.
结论:
- 来自Benguet,Kalinga,Isabela,Quezon,Marinduque和Samar的土著猪被确定为需要保护的独特遗传单元.
- 几个PhNP种群的有效种群大小小 (Ne) 强调了迫切需要采取保护行动.
- 建议鼓励PhNP种植作为一种保护策略,以支持这些独特的遗传资源.
相关概念视频
Conservation of Declining Populations
9.6K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.6K
Conservation of Small Populations
13.2K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.2K
What is Population Genetics?
58.0K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
58.0K
Gene Evolution - Fast or Slow?
7.1K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.1K
Multi-species Conserved Sequences
3.9K
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
3.9K
Gene Flow
35.2K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.2K


