Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions

Wormlion larvae are found in substrates consisting of fine sand or powder, implying that they may be able to distinguish between different substrates according to particle size. To estimate the effects of particle size on wormlions, the pit-building decision of the larvae of the wormlion Vermileo ve...

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Main Author: Dušan DEVETAK
Format: Article
Language:English
Published: Institute of Entomology, Biology Centre, Czech Academy of Science 2008-10-01
Series:European Journal of Entomology
Subjects:
Online Access:https://www.eje.cz/artkey/eje-200804-0013_Substrate_particle_size-preference_of_wormlion_Vermileo_vermileo_Diptera_Vermileonidae_larvae_and_their_inte.php
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author Dušan DEVETAK
author_facet Dušan DEVETAK
author_sort Dušan DEVETAK
collection DOAJ
description Wormlion larvae are found in substrates consisting of fine sand or powder, implying that they may be able to distinguish between different substrates according to particle size. To estimate the effects of particle size on wormlions, the pit-building decision of the larvae of the wormlion Vermileo vermileo was observed in four substrates consisting of different sand fractions. Wormlion larvae prefer the finest sand fraction with particle size <= 230 µm. When wormlions (Vermileo vermileo) and antlions (Euroleon nostras) are placed in the same container with two different substrates, interspecific predation does not occur. In two-substrate choice tests larvae of the two species show opposite preferences for two substrates offered. While wormlion larvae readily build pits in the finest sand fraction (<= 230 µm), antlion larvae prefer coarser sand (with particle size 230-540 µm). Wormlion preference for the finest sands and powders, and antlion preference for sands of medium particle size was confirmed by field observations. Sand particle size affects the spatial distribution of sand-dwelling insect larvae and thus may reduce conflicts between heterospecifics.
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spelling doaj.art-d46615f2e1a74d46afa906d9490e8ac12022-12-21T22:52:06ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292008-10-01105463163510.14411/eje.2008.085eje-200804-0013Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlionsDušan DEVETAK0Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, 2000 Maribor,Wormlion larvae are found in substrates consisting of fine sand or powder, implying that they may be able to distinguish between different substrates according to particle size. To estimate the effects of particle size on wormlions, the pit-building decision of the larvae of the wormlion Vermileo vermileo was observed in four substrates consisting of different sand fractions. Wormlion larvae prefer the finest sand fraction with particle size <= 230 µm. When wormlions (Vermileo vermileo) and antlions (Euroleon nostras) are placed in the same container with two different substrates, interspecific predation does not occur. In two-substrate choice tests larvae of the two species show opposite preferences for two substrates offered. While wormlion larvae readily build pits in the finest sand fraction (<= 230 µm), antlion larvae prefer coarser sand (with particle size 230-540 µm). Wormlion preference for the finest sands and powders, and antlion preference for sands of medium particle size was confirmed by field observations. Sand particle size affects the spatial distribution of sand-dwelling insect larvae and thus may reduce conflicts between heterospecifics.https://www.eje.cz/artkey/eje-200804-0013_Substrate_particle_size-preference_of_wormlion_Vermileo_vermileo_Diptera_Vermileonidae_larvae_and_their_inte.phpwormlionantlionvermileoeuroleonsubstrate particle sizesandpowder
spellingShingle Dušan DEVETAK
Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
European Journal of Entomology
wormlion
antlion
vermileo
euroleon
substrate particle size
sand
powder
title Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
title_full Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
title_fullStr Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
title_full_unstemmed Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
title_short Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
title_sort substrate particle size preference of wormlion vermileo vermileo diptera vermileonidae larvae and their interaction with antlions
topic wormlion
antlion
vermileo
euroleon
substrate particle size
sand
powder
url https://www.eje.cz/artkey/eje-200804-0013_Substrate_particle_size-preference_of_wormlion_Vermileo_vermileo_Diptera_Vermileonidae_larvae_and_their_inte.php
work_keys_str_mv AT dusandevetak substrateparticlesizepreferenceofwormlionvermileovermileodipteravermileonidaelarvaeandtheirinteractionwithantlions