冬季红火蚁蚁群结构特点

调查研究了冬季红火蚁Soenopsis invicta蚁群结构特点.结果表明,冬季红火蚁蚁群中职蚁占96.3%,职蚁中工蚁比例高达98.7%;幼蚁以幼虫为主,约占60%.1 cm2有效蚁丘表面基部面积和1 cm3蚁丘体积平均蚂蚁数量分别为287和24头.蚁群数量和不同品级数量随有效蚁丘表面基部面积、蚁丘体积间变化而变化,表现出较强规律.建立了蚁群总数、各品级数量和有效蚁丘表面基部面积、蚁丘体积间的14个模型.提出了推测单位面积上冬季蚁群数量的方法.

Colony Structure of Solenopsis invicta in Winter in South China

The colony structure of red imported fire ant,Solenopsis invicta Buren in winter,in Wuchuan County,Guangdong Province,was studied in this paper.The proportion of workers was about 96.3 % in the colony.Larval was the majority in brood of the colony.There were 287 and 24 ants in area of 1 cm^2 mound surface base and volume of 1 cm^3 mound respectively.The relationship between the mound surface base area,the mound volume and the colony number were studied.14 models were constructed and used to describe the regulations of the colony.In general,the colony in winter was more larger than that in spring when the mound sizes were same.Based on the above results,the method which could be used to determine the quantity of red imported fire ants in the certain area was suggested.