Natural and Experimental Coevolution between the Invasive Garden Ant and its Parasites CLUSTER: "Experimental evolution and natural variation of Bacillus-invertebrate interactions"

入侵花园蚂蚁及其寄生虫群之间的自然和实验共同进化:“芽孢杆菌-无脊椎动物相互作用的实验进化和自然变异”

基本信息

项目摘要

Aim of the proposed project is to study spatial and temporal patterns of coevolution in theinvasive garden ant, Lasius neglectus, and its fungal and bacterial hosts. When this antspecies is introduced into new sites, it experiences a loss of adapted parasites, as it is freedfrom its natural parasites (“parasite release”) and encounters new parasites native to theintroduced range that are not yet adapted to the new host species (“disrupted coevolution”).Each introduction thus sets the starting point of a new coevolutionary arms race by buildingnew combinations of hosts and parasites. We will study the outcome of this arms race inpopulations differing in their age, size, genetic diversity and dominance of the invasivegarden ant in the species community, by isolation of field fungal and bacterial parasites. Todetermine the “tightness of coevolution” in the different populations, we will then performinfections of the hosts and parasites sampled from the same and different field populationsunder standardised laboratory conditions, and test for parasite pathogenicity and hostindividual and collective (social) immune defences. We will test both across populations(spatial aspects) and the same populations for two time points in a distance of two years(temporal aspect). We will also perform an experimental evolution study, in which wedetermine the speed of adaptation of fungal (Metarhizium anisopliae) and bacterial (Bacillusthuringiensis) parasites to the invasive garden ant depending on the host genetic diversityand its ecological dominance. We will analyse changes in parasite pathogenicity and thecorresponding genetic changes over time.
该项目的目的是研究入侵花园蚂蚁(Lasius neglectus)及其真菌和细菌宿主的协同进化的空间和时间模式。当这种蚂蚁物种被引入新的地点时,它会失去适应的寄生虫,因为它摆脱了自然寄生虫(“寄生虫释放”),并遇到了新的寄生虫,这些寄生虫来自引入的地区,但还没有适应新的宿主物种(“破坏的共同进化”)。因此,每一次引入都通过建立新的宿主和寄生虫组合来设定新的共同进化军备竞赛的起点。我们将通过分离野外真菌和细菌寄生虫,研究不同年龄、大小、遗传多样性和入侵花园蚂蚁在物种群落中的优势地位的种群之间这场军备竞赛的结果。为了确定不同种群的“协同进化紧密度”,我们将在标准化的实验室条件下,对从相同和不同田间种群中取样的宿主和寄生虫进行感染,并测试寄生虫的致病性和宿主个体和集体(社会)免疫防御。我们将测试跨人群(空间方面)和相同人群在两年内的两个时间点(时间方面)。我们还将进行一项实验进化研究,其中我们确定真菌(金龟子绿僵菌)和细菌(苏云金芽孢杆菌)寄生虫对入侵花园蚂蚁的适应速度取决于宿主的遗传多样性及其生态优势。我们将分析寄生虫致病性的变化和相应的遗传变化随时间的推移。

项目成果

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Ants Disinfect Fungus-Exposed Brood by Oral Uptake and Spread of Their Poison
  • DOI:
    10.1016/j.cub.2012.11.034
  • 发表时间:
    2013-01-07
  • 期刊:
  • 影响因子:
    9.2
  • 作者:
    Tragust, Simon;Mitteregger, Barbara;Cremer, Sylvia
  • 通讯作者:
    Cremer, Sylvia
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Professorin Dr. Sylvia Cremer其他文献

Professorin Dr. Sylvia Cremer的其他文献

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{{ truncateString('Professorin Dr. Sylvia Cremer', 18)}}的其他基金

Disease recognition and collective defence in insect societies
昆虫社会中的疾病识别和集体防御
  • 批准号:
    37272428
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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