Article thumbnail
Location of Repository

Bi-directional plasticity : Rotifer prey adjust spine length to different predator regimes

By Huan Zhang, Johan Hollander and Lars Anders Hansson

Abstract

Numerous prey organisms, including many rotifers, exhibit inducible defensive plasticity, such as spines, in response to predators. Here, we test the hypothesis that prey modify their defence response to different predator sizes with a bi-directional adjustment in spine length. First, we show experimentally, that large-sized predators induce a reduction in prey spine length. Second, we conducted a complementary field monitoring study showing that the spine length of the prey rotifer Keratella cochlearis changed in opposite directions, in response to the shift in dominance between small-sized and large-sized predators. Third, in order to test the generality of our novel findings, we conducted a meta-analysis covering a wide array of rotifer prey taxa, strengthening the conclusions from our experimental and field studies. Hence, by combining evidence from experiments and studies in the field with a meta-analysis, we, for the first time, demonstrate that rotifer prey distinguish between predators and adjust their protective spine length accordingly, i.e. rapidly adjust spine length to escape either below or above the dominant predator's gape size window. In a broader perspective, our conclusions advance our knowledge on observed spatial and temporal variations in protective morphologies among prey organisms

Topics: Zoology, Ecology
Publisher: 'Springer Science and Business Media LLC'
Year: 2017
DOI identifier: 10.1038/s41598-017-08772-7
OAI identifier: oai:lup.lub.lu.se:df481afc-6bce-41c9-931f-228939b88e2a
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://dx.doi.org/10.1038/s415... (external link)
  • https://lup.lub.lu.se/record/d... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.