Abstract
The possibility of feeding on green and newly fallen leaves of the small-leaved lime Tilia cordata was studied for the collembolans Protaphorura armata and Vertagopus pseudocinereus. Young leaves grown under sterile conditions and almost free of yeast fungi were found to be toxic to the collembolan V. pseudocinereus: feeding on them led to the death of the animals. Leaves grown under natural conditions were nontoxic: when used by the collembolans as feed, they provided for collembolan growth and fecundity. Feeding preferences of the collembolans in relation to the yeasts attributed to different ecomorphs—epiphytes, litter saprophytes, pedobionts, and saccharobionts—were studied. Of the 24 yeast strains isolated from plant green parts, litter, and soil and assigned to eight species, no strain was revealed that was not used by the collembolans. However, certain yeast strains were preferable for the collembolans. The population of the V. pseudocinereus collembolans feeding on the yeast Rhodotorula glutinis (nss 31–4) exceeded that grown on Cryptococcus terricola (2044) 1.5-fold. Thus, the collembolans have feeding preferences in relation to yeast fungi, as was shown earlier with mycelial micromycetes. The possible mechanisms of the feeding preferences of the collembolans in relation to yeasts are discussed.
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Original Russian Text © E.V. Men’ko, I.Yu. Chernov, B.A. Byzov, 2006, published in Mikrobiologiya, 2006, Vol. 75, No. 6, pp. 814–822.
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Men’ko, E.V., Chernov, I.Y. & Byzov, B.A. Interrelationships between yeast fungi and collembolans in soil. Microbiology 75, 708–715 (2006). https://doi.org/10.1134/S0026261706060142
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DOI: https://doi.org/10.1134/S0026261706060142