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  • Substrate particle size-preference of wormlion Vermileo vermileo (Diptera: Vermileonidae) larvae and their interaction with antlions
    Devetak, Dušan
    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 :S230 um. 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 preferenees for two substrates offered. While wormlion larvae readily build pits in the finest sand fraction (:S 230 um), antlion larvae prefer coarser sand (with particle size 230-540 um), Wormlion preference for the finest sands and powders, and antlion preference for sands of medium partiele size was confinned by field observations. Sand particle size affects the spatial distribution of sand-dwelling insect larvae and thus may reduce conflicts between heterospecifics.
    Vir: European Journal of Entomology. - ISSN 1210-5759 (105, 2008, str. 631-635)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 16213768

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