西方玉米根虫的多次跨大西洋引入
Nicholas Miller1, Arnaud Estoup, Stefan Toepfer
1Biologie des Populations en Interaction, Unité Mixte de Recherche (UMR) 1112 Institute National de la Recherche Agronomique (INRA)-Université de Nice-Sophia Antipolis, 400 Route des Chappes, 06903 Sophia Antipolis Cedex, France.
概括
侵袭性西部玉米根虫已经多次从北美入侵欧洲. 遗传分析显示至少有三个单独的引入,挑战了关于害虫传播的先前假设.
科学领域:
- 农业昆虫学 农业昆虫学
- 侵入性物种 生物学 生物学
- 人口遗传学 人口遗传学
背景情况:
- 西方玉米根虫 (Diabrotica virgifera virgifera) 是北美玉米的主要害虫.
- 它的引入欧洲对欧洲农业构成重大威胁.
- 以前的理解表明,在中欧有一个单一的引入点,导致随后的传播.
研究的目的:
- 调查西玉米根虫在欧洲的起源和引入途径.
- 为了确定欧洲的感染是否仅来自中欧人口.
- 分析害虫的遗传多样性,以推断引入事件.
主要方法:
- 利用基于模型的贝叶斯分析.
- 检查了西玉米根虫种群中的遗传变异性.
- 将遗传数据进行比较,以推断人口结构和历史介绍.
主要成果:
- 这项研究驳斥了中欧单一引入点的假设.
- 有证据表明,西玉米根虫至少有三次独立从北美引入.
- 这些引入发生在过去二十年内.
结论:
- 西方玉米根虫的欧洲种群不是单一引入事件的结果.
- 多次,独立的跨大西洋引入有助于害虫的传播.
- 需要进一步的研究,以了解导致引入增加的因素.
相关概念视频
Migration
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Gene Flow
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
Sources of Food Contamination
Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...
American Trypanosomiasis
Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...


