Journal of Ethology

, Volume 30, Issue 1, pp 125–132 | Cite as

Impact of starvation on the silk attractiveness in a weaving mite, Tetranychus urticae (Acari: Tetranychidae)

  • Guillaume Jean Le Goff Email author
  • Thierry Hance
  • Claire Detrain
  • Jean-Louis Deneubourg
  • Gwendoline Clotuche
  • Anne-Catherine Mailleux


The two-spotted spider mite Tetranychus urticae is a silk producer known to live in groups. Its silk production plays an important role in protection against external aggressions (predators, rains, etc.). It is also used for group dispersal through the formation of silkballs or as a thread during individual migration by walking. Until now, the role of silk in enhancing migration has been poorly studied. In this paper, the influence of the silken thread presence on T. urticae’s locomotor activity is studied. One virgin female is placed at the centre of a cover glass partially covered by silk. Moving and resting time are studied on the silk or the clean part of the cover glass as a function of the starvation level of mites (fed vs. starved) and the age of the silk (30 vs. 60 vs. 90 vs. 120 vs. 150 min). Results show that a fed female spends more time on the silk-covered part than on the clean part as long as the silk is fresh (less than 120 min). Thus, the age-related changes in chemical and/or physical properties of the silk influence the spatial distribution of fed mites. Whatever the age of the silk, starved mites spend more time on the clean part of the set-up. Indeed, the silk freshly laid by conspecifics is attractive only for fed mites; starved mites probably prefer sites without silk (and conspecifics). This study shows that that the silk influences the spatial distribution of T. urticae according to its level of starvation and that silk is probably is an indicator of the presence of conspecifics.


Tetranychus urticae Silk Stigmergy Locomotor activity 



We are very grateful to Pr. Kaoutar Lebdi who supplied the red form of Tetranychus urticae, which was used in our experiments, and to George Van Impe for the useful discussions about Tetranychus urticae. We would like to thank all the team of the Earth and Life Institute for their help in data analysis. The authors are also indebted to the National Fund for Scientific Research (FNRS, Belgium) for funding through the Fund for Fundamental and Collective Research (FRFC, convention 2.4622.06). A.C. Mailleux was financially supported by IRSIB (Institut d’encouragement de la Recherche Scientifique et de l’Innovation de Bruxelles). This publication is number BRC211 of the Biodiversity Research Center.

Supplementary material

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Copyright information

© Japan Ethological Society and Springer 2011

Authors and Affiliations

  • Guillaume Jean Le Goff
    • 1
    Email author
  • Thierry Hance
    • 1
  • Claire Detrain
    • 2
  • Jean-Louis Deneubourg
    • 2
  • Gwendoline Clotuche
    • 1
  • Anne-Catherine Mailleux
    • 1
  1. 1.Earth and Life Institute, Biodiversity Research CenterUniversité Catholique de LouvainLouvain-la-NeuveBelgium
  2. 2.Laboratoire d’Écologie socialeUniversité Libre de BruxellesBruxellesBelgium

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