Acomprehensive study on invasive aliea species and supercolonies of ants

入侵蚂蚁物种和蚂蚁超级群落的综合研究

基本信息

批准号：
17207003
负责人：
HIGASHI Seigo
金额：
$ 32.78万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17207003/
关键词：
supercolony Formica yessensis kin recognition hydrocarbon invasive alien ants Argentine ant fire ant 真社会性マイクロサテライトDNA 個体判別触覚感覚子

项目摘要

In this research on Formica yessensis which exhibits a supercolony on the coast of Ishikari, Hokkaido, We confirmed the presence of a chemosensory sensillum which was previously discovered in workers of a phylogenetically close ant Camponotus japonica. Whereas the sensillum responded even to hydrocarbons of nestmates, the response was less intense than that to hydrocarbons of workers from other colonies, indicating that this organ of F. yessensis retains the function of nestmate recognition. Within the supercolony, the response of the sensillum was significantly correlated with the geographic distance of the analyzed nests, suggesting that there is a little antagonistic relationship even between the nests which do not show any aggressive behaviors. The presence of the antagonistic relationship between the supercolonial nests was also suggested by a mathematical analysis of the behavioral data which was obtained in the outdoor observation of F. yessensis workers. Moreover, the analysis of microsatellite DNA demonstrated that the kin relatedness within the supercolony was as low as that between different colonies. Although the intranidal kin relatedness was a little higher, the standard deviation was high, indicating that the nestmates were composed not only of kins but also of non-related workers and queens. These results suggest that the kin selection is not an important factor to maintain the supercolony. Probably, one of more important factors is the strong wind which often blows flying alates to the sea and accordingly offers advantages to the post-mating queens which abandon the flight and enter the natal or neighboring nests. The relatively homogeneous habitat on seaside dune may be another key factor which facilitated the development of polygyny and the reduction of internidal antagonism on the Ishikari Coast.

在这项关于Yessensis的典型Yessens的研究中，该研究在北海道的Ishikari海岸上表现出超颜色，我们证实了存在化学体感觉的存在，该化学体感觉符号以前是在系统发育近距离的工人中发现的。尽管感觉到甚至对巢穴的碳氢化合物做出了反应，但反应的强度不如其他菌落的工人的碳氢化合物，这表明F. Yessensis的这种器官保留了巢穴识别的功能。在超级殖民地中，感官的响应与分析巢的地理距离显着相关，这表明即使在巢之间甚至没有显示任何侵略性行为的巢之间也存在一些拮抗关系。还通过对Yessensis工人的户外观察中获得的行为数据进行数学分析，提出了超殖民巢之间拮抗关系的存在。此外，对微卫星DNA的分析表明，超级殖民地内的亲属相关性与不同菌落之间的亲属相关性低。尽管胸内亲属相关性略高一些，但标准偏差很高，表明巢穴不仅由亲属，而且由无关的工人和皇后组成。这些结果表明，亲属的选择不是维持超级颜色的重要因素。可能的一个更重要的因素之一是强风通常会吹向大海，因此为抛弃飞行的皇后提供了优势，这些皇后会放弃飞行，进入纳塔尔或附近的巢穴。海滨沙丘上相对均匀的栖息地可能是另一个关键因素，它促进了一夫多妻制的发展和减少Ishikari海岸的内部拮抗作用。