澳大利亚首次发现边缘副球菌(半翅目:伪球虫科)的遗传学研究。

IF 2.1 3区 农林科学 Q1 ENTOMOLOGY
Sonu Yadav, Shreya Patel, Sachinthi Kithulgoda, Haidee Brown, Brian Thistleton
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引用次数: 0

摘要

物种在新环境中的传播通常与创始人效应、有效种群规模和遗传多样性的减少有关。然而,遗传多样性的减少并不一定意味着低的建立和传播潜力。边缘副球菌是一种多食性害虫,在大约34年的时间里入侵了4个大洲。它于2023年7月在澳大利亚北部地区首次被发现。在此之后,我们从3个地区的20个郊区收集了45个标本。利用线粒体细胞色素氧化酶I和核糖体RNA基因(18S和28S),我们检测了最近检测到的澳大利亚人群的分子诊断稳健性、遗传多样性、单倍型网络和人口统计学(Tajima D)。我们将样本与存放在GenBank上的公开序列进行了比较。3个基因均适合分子诊断,鉴定分数为100%。3个基因的核苷酸多样性和单倍型多样性均较低,Tajima D呈阴性,表明这是一个近期的单一建立者事件。将本研究序列与全球序列进行比较,发现单倍型多样性、核苷酸多样性和田岛D值较低,表明尽管3个基因的遗传多样性较低,但边缘p已经成功入侵了南美、非洲、亚洲和大洋洲。我们的研究强调了人口统计学和生活史特征在物种入侵成功中的作用。我们提供了一个基线数据集,从第一次检测P.边际在澳大利亚。对传播的进一步分析可以为入侵物种在新环境中的适应提供见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Genetic insights into the first detection of Paracoccus marginatus (Hemiptera: Pseudococcidae) in Australia.

Species spread in a new environment is often associated with founders' effect, and reduced effective population size and genetic diversity. However, reduced genetic diversity does not necessarily translate to low establishment and spread potential. Paracoccus marginatus Williams and Granara de Willink is a polyphagous pest that has invaded 4 continents in around 34 years. It was first detected in the Northern Territory, Australia in July 2023. Following this, we collected 45 specimens from 20 suburbs across 3 regions. Using mitochondrial cytochrome oxidase I and nuclear ribosomal RNA genes (18S and 28S), we examined molecular diagnostics robustness, genetic diversity, haplotype network, and demographics (Tajima D) of the recently detected Australian population. We compared our samples with publicly available sequences deposited on GenBank. All 3 genes were suitable for molecular diagnosis with a 100% identity score. For all 3 genes, we found low nucleotide diversity, haplotype diversity, and negative Tajima D in the newly detected P. marginatus population, suggesting a recent single founder event by a few individuals. Comparing our study's sequences with global sequences showed low haplotype diversity, nucleotide diversity, and Tajima's D, suggesting that despite low genetic diversity at the 3 genes, P. marginatus has successfully invaded South America, Africa, Asia, and Oceania. Our study highlights the role of demographic and life history traits in the species' invasion success. We provide a baseline dataset from the first detection of P. marginatus in Australia. Further analysis of the spread can provide insights into invasive species' adaptation in a novel environment.

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来源期刊
Journal of Insect Science
Journal of Insect Science 生物-昆虫学
CiteScore
3.70
自引率
0.00%
发文量
80
审稿时长
7.5 months
期刊介绍: The Journal of Insect Science was founded with support from the University of Arizona library in 2001 by Dr. Henry Hagedorn, who served as editor-in-chief until his death in January 2014. The Entomological Society of America was very pleased to add the Journal of Insect Science to its publishing portfolio in 2014. The fully open access journal publishes papers in all aspects of the biology of insects and other arthropods from the molecular to the ecological, and their agricultural and medical impact.
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