Low Density of Ant Lion Larva (Myrmeleon crudelis) in Ant–Acacia Clearings: High Predation Risk or Inadequate Substrate?1

María Genoveva Gatti; Alejandro G. Farji-Brener

doi:10.1646/0006-3606(2002)034[0458:LDOALL]2.0.CO;2

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María Genoveva Gatti,¹ Alejandro G. Farji-Brener^2,*

¹aLaboratorio de Ecología Funcional Depto. de Biología, Pabellón II Piso 4 FCEyN–UBA, Ciudad Universi
²bLab. Ecotono, Depto de Ecología, CRUB. Unidad Postal Universidad del Comahue, (8400) Argentina

^* Corresponding author; alefarji@crub.uncoma.edu.ar; alefarji@yahoo.com

Abstract

We experimentally determined whether the low density of antlion larvae found in ant-acacia clearings is due to high levels of ant predation or an inadequate substrate for pit-trap construction. Pit establishment was more affected by soil improvement than by the exclusion of ants, suggesting that soil condition is the main factor that affect antlions' density. The low density of this ant-predator in ant-acacia clearings may be considered as an indirect advantage of the ant's pruning behavior.

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María Genoveva Gatti and Alejandro G. Farji-Brener "Low Density of Ant Lion Larva (Myrmeleon crudelis) in Ant–Acacia Clearings: High Predation Risk or Inadequate Substrate?," BIOTROPICA 34(3), 458-462, (1 September 2002). https://doi.org/10.1646/0006-3606(2002)034[0458:LDOALL]2.0.CO;2

Received: 27 September 2001; Accepted: 1 March 2002; Published: 1 September 2002

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abiotic constraints

Acacia collinsii

ant lions

ants

dry tropical forest

Myrmeleon crudelis

pit trap

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