红火蚁蚁丘大小与诱集工蚁数量的关系

采用诱饵诱集法研究了荒地、绿化带生境中红火蚁蚁丘体积、蚁丘表面基部面积与诱集工蚁数量之间的关系.结果表明：在荒地生境中，随着蚁丘体积的增大，诱集工蚁数量表现为先迅速增加、后增大减缓、最终趋于平衡的规律，当蚁丘体积、蚁丘表面基部面积分别为11634 cm³、1308 cm²时，诱集工蚁数达到最大值，为每诱饵291 头；在绿化带生境中，随着蚁丘体积的增大，诱集工蚁数量动态与荒地生境相似，当蚁丘体积>18089 cm³时，诱集工蚁数量的增幅明显变缓，当蚁丘体积为25974 cm³时，诱集工蚁数达到最大值，为每诱饵232头.韦布尔函数方程可较好地描述诱集的红火蚁工蚁数量与蚁丘体积、蚁丘表面基部面积间的关系.

Relationships between mound size and captured ergate amount of Solenopsis invicta

By the method of bait trapping, this paper studied the relationships b
etween mound size (mound volume and mound surface base area) and captured ergate
 amount of Solenopsis invicta in wasteland and greenbelt. In wasteland, with
 the
 increase of mound size, the amount of captured S. invicta ergates increased
 rap
idly at first, slowed down then, and kept stable at last. When the mound volume
and surface base area were 11634 cm3 and 1308 cm2 respectively, the captured
 ergate amount reached the maximum, being 291 individuals per trap. Similar patt
erns were observed in greenbelt. The increase of captured S. invicta ergate
amou
nt slowed down rapidly when the mound volume was larger than 18089 cm3, and re
ached
the maximum (232 individual per trap) when the mound volume was 25974 cm3. The
 We
ibull equation could better describe the relationships between the mound volume
and mound surface base area and the captured ergate amount of S. invicta.