在澳大利亚野生动物中胚胎囊中标志着遗传多样性,使用下一代测序-遗传学方法揭示了这一现象
Anson V Koehler1, H M P Dilrukshi Herath1, Ross S Hall1
1Department of Veterinary Biosciences, Faculty of Science, The University of Melbourne, Parkville, Victoria, 3010, Australia.
International journal for parasitology. Parasites and wildlife
|January 31, 2024
概括
这项研究在澳大利亚野生动物中发现了多种不同的胚胎囊亚型,包括有袋动物中的新型变体. 这些发现突出了澳大利亚野生动物中胚胎囊的复杂遗传多样性和传播模式.
科学领域:
- 兽医寄生虫学 兽医寄生虫学
- 微生物生态学 微生物生态学
- 野生动物健康 野生动物健康
背景情况:
- 囊胚虫是一种常见的肠道寄生虫,在脊椎动物中发现,在全球范围内已识别出40多种已知的亚型 (ST).
- 野生动物,特别是澳大利亚野生动物中的胚囊研究有限,这阻碍了对这些宿主中的流行病学的理解.
研究的目的:
- 在选择的澳大利亚野生动物物种中对胚胎囊变体进行遗传特征和分类.
- 调查澳大利亚野生动物中布拉斯托囊亚型的多样性和分布.
主要方法:
- 采用了基于PCR的下一代测序 (NGS) 遗传学方法.
- 来自澳大利亚维多利亚州九种野生动物的便样本被分析为Blastocystis SSU-rRNA基因序列.
主要成果:
- 在1658个样本中,在29%的样本中检测到胚囊,其中休息鹿 (63%) 的患病率最高.
- 测序揭示了有袋动物中已知的七种亚型和两种新型亚型 (ST45,ST46).
- 在巨脚动物,鹿,猫头和犬类动物中观察到混合感染,但在子或蝙蝠中没有.
结论:
- 这项研究表明,在澳大利亚野生动物中,细胞囊的遗传多样性显著.
- 这些发现表明复杂的传播动态,并强调需要进一步研究野生动物水库中的胚胎囊.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
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


