华南农业大学考研难吗，华南农业大学考研难吗?
小火蚁被世界自然保护联盟（IUCN）列为最具危害性的100种入侵物种之一，已从其原产地南美洲蔓延到除南极洲以外的每个大陆。近期，华南农业大学红火蚁研究中心完成的题为“First record of the little fire ant, Wasmannia auropunctata (Hymenoptera: Formicidae), in Chinese mainland”的研究论文在Journal of Integrative Agriculture (《农业科学学报》(英文), JIA) 2022年6期正式出版。该研究首次在我国大陆记录到了小火蚁的野外种群，说明小火蚁已在我国华南地区成功入侵定殖。
研究人员通过镜检发现样本符合小火蚁的形态特点，进一步对来自3巢共9头工蚁利用DNA条码技术的线粒体基因序列（mtDNA COI）分析发现，它们与来自阿根廷的样本有99.5%以上相似度。小火蚁的危害包括多个方面，如对农业生产与人类健康的影响，干扰侵入地的原生蚂蚁群落、无脊椎动物群落与植物群落进而影响生态平衡，为害侵入地的脊椎动物以及其他危害。该研究首次正式记录了小火蚁入侵中国大陆，但它在中国的入侵阶段和发生程度尚不清楚，相关部门应该加强该种入侵蚂蚁的植物检疫、发生分布调查、生物生态学特性研究、监测与防控技术开发等，以积极应对小火蚁对我国社会与生态安全的威胁。
原文链接：https://doi.org/10.1016/S2095-3119(22)63903-0
In January 2022, we received ant specimens collected from three field colonies from Shantou City, Guangdong Province, China. They were identified as the little fire ant, Wasmannia auropunctata, through morphological and molecular analyses. Wasmannia auropunctata is listed as one of the 100 most dangerous invasive species by the International Union for Conservation of Nature (IUCN) and has spread from its native range in South America to every continent except Antarctica. DNA analysis of mitochondrial cytochrome c oxidase subunit I (COI) in nine specimens of W. auropunctata found that they had a close genetic relationship with specimens from Argentina. This study represents the first formal record of the establishment of W. auropunctata outdoor in Chinese mainland. However, the invasion stage and occurrence degree of W. auropunctata in China are not clear to date. The implementation of quarantine measures, investigation of the occurrence and distribution, and development of monitoring and control strategies are needed to actively respond to the threat posed by this highly invasive ant. The original research paper is available in https://doi.org/10.1016/S2095-3119(22)63903-0.
华南农业大学考研难吗(华南农业大学考研难吗?)