- by A. Sunjian
On a trip to Puerto Vallarta last November 2003, I came upon the scene of a massacre. Foragers from a large Atta colony had stumbled upon a nest of stinging fire ants, and about 10-20 dead and dying leafcutters littered the ground. Disoriented foragers, panicked by the smells of alarm generated by their dying nestmates, were also set upon by other ants from nearby nests.
Solenopsis were swarming around their nest holes, which were partially covered by leaves and twigs. There were at least 10-20 dead and dying leafcutters around the immediate area, and foraging workers were also being attacked by both the Solenopsis and opportunistic ants in a nearby nest. An analysis of four samples of these dead and dying leafcutters revealed that all of the approx. 5 mm A. mexicana workers had at least 2 dead Solenopsis attached to their appendages, and that most of the smaller fire ants ants had missing gasters. Surprisingly, the smallest leafcutter (at 3-4 mm) managed to kill the most Solenopsis. This notable individual had at least three (and maybe four) dead fire ants in its jaws or clinging to its legs and antennae.
- Notes, 2003-11-30
Web Site Author: A. Sunjian
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