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Assessment of the Effects of Ants on Hawaiian Crickets

John S. LaPolla, Daniel Otte and Lauren A. Spearman
Journal of Orthoptera Research
No. 9 (Nov., 2000), pp. 139-148
Published by: Orthopterists' Society
DOI: 10.2307/3503645
Stable URL: http://www.jstor.org/stable/3503645
Page Count: 10
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Assessment of the Effects of Ants on Hawaiian Crickets
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Abstract

A visit to Kauai in 1997 revealed a catastrophic drop in Laupala cricket populations in the Keahua region of the island. Ants, previously unknown at collection sites, were now found in large numbers. This study investigates the possible effects of ants on Laupala. Localities from Hawaii, Kauai, Oahu, and Maui, previously known to possess large cricket populations were examined for the number of crickets heard singing and the presence of ants. Cricket songs provide a method by which cricket abundance can be assessed. No sites were found to have both an abundant Laupala population and a population of Pheidole megacephala. The data suggest that in eastern Kauai the decline in crickets, and the peculiar distribution patterns observed, can be attributed to predation by this ant.

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