RANGE EXPANSION AND LOCAL POPULATION INCREASE OF THE EXOTIC ANT, PHEIDOLE OBSCURITHORAX, IN THE SOUTHEASTERN UNITED STATES (HYMENOPTERA: FORMICIDAE)
RANGE EXPANSION AND LOCAL POPULATION INCREASE OF THE EXOTIC ANT, PHEIDOLE OBSCURITHORAX, IN THE SOUTHEASTERN UNITED STATES (HYMENOPTERA: FORMICIDAE)
复制标题
美国东南部外来蚂蚁 PHEIDOLE OBSCURITHORAX 的活动范围扩大和当地种群数量增加（膜翅目：蚁科）
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
W. Tschinkel
中科院分区：
文献类型：
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作者：
J. R. King;W. Tschinkel
摘要外来蚂蚁，Pheidole obscurithorax Naves，目前正在扩大其范围和增加在美国东南部的局部密度。我们描述了来自5个州的新的县记录和当地的密度增加沿着在塔拉哈西，佛罗里达地区的路边样带。这种不规则的分布表明该物种是被人类迁移到新的地方。在整个引入的范围内，该物种主要局限于高度干扰的栖息地，如草坪和路边，并经常与引入的火蚁（Solenopsis invicta Buren）共同出现。在本地，虽然单位面积上的最大巢密度自2002年以来没有变化，但黑胸山鸡的总占地面积和总巢数要大得多。除了这些数据，对这个物种的生物学知之甚少。
Abstract The exotic ant, Pheidole obscurithorax Naves, is currently expanding its range and increasing in local density in the southeastern United States. We describe new county records from 5 states and local density increases along roadside transects in the Tallahassee, Florida area. The patchy distribution suggests that this species is being transported to new localities by people. Throughout its introduced range, this species is largely confined to highly disturbed habitats, such as lawns and roadsides and frequently co-occurs with the introduced fire ant, Solenopsis invicta Buren. Locally, although the maximum density of nests per unit area has not changed since 2002, the total area occupied, and the total number of nests of P. obscurithorax is much greater. Beyond these data, little is known of the biology of this species.