Food decisions of an omnivorous thrips are independent from the indirect effects of jasmonate-inducible plant defences on prey quality.

Autor: Ataide LMS; Department of Evolutionary and Population Biology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands., Dias CR; Department of Entomology, Federal University of Viçosa, Peter Henry Rolfs s/n, 36570-000, Viçosa, Minas Gerais, Brazil., Schimmel BCJ; Department of Evolutionary and Population Biology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands., van Erp T; Department of Evolutionary and Population Biology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands., Pallini A; Department of Entomology, Federal University of Viçosa, Peter Henry Rolfs s/n, 36570-000, Viçosa, Minas Gerais, Brazil., Kant MR; Department of Evolutionary and Population Biology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. m.kant@uva.nl.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2019 Feb 11; Vol. 9 (1), pp. 1727. Date of Electronic Publication: 2019 Feb 11.
DOI: 10.1038/s41598-018-38463-w
Abstrakt: Plant defensive substances can affect the quality of herbivores as prey for predators either directly or indirectly. Directly when the prey has become toxic since it ingested toxic plant material and indirectly when these defences have affected the size and/or nutritional value (both quality parameters) of prey or their abundance. To disentangle direct and indirect effects of JA-defences on prey quality for predators, we used larvae of the omnivorous thrips Frankliniella occidentalis because these are not directly affected by the jasmonate-(JA)-regulated defences of tomato. We offered these thrips larvae the eggs of spider mites (Tetranychus urticae or T. evansi) that had been feeding from either normal tomato plants, JA-impaired plants, or plants treated with JA to artificially boost defences and assessed their performance. Thrips development and survival was reduced on the diet of T. evansi eggs relative to the diet of T. urticae eggs yet these effects were independent from the absence/presence of JA-defences. This indicates that the detrimental effects of tomato JA-defences on herbivores not necessarily also affects their quality as prey.
Databáze: MEDLINE
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