Behavioural interseasonal adaptations in Daphnia pulicaria (Crustacea: Cladocera) as induced by predation infochemicals

Ai Nihongi, Joshua J. Ziarek, Marco Uttieri*, Roberto Sandulli, Enrico Zambianchi, J. Rudi Strickler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A wide range of chemical signals have been demonstrated to affect the swimming behaviour of Daphnia, including molecules associated with predation threat. In this contribution, we investigate how the concomitant presence of kairomones from the predaceous fish Lepomis macrochirus and alarm pheromones from crushed conspecifics affect the small-scale swimming behaviour of Daphnia pulicaria. In particular, we studied both the light/dark and summer/winter variations in the swimming motion of the cladoceran in the presence and absence of these infochemicals, and related them to the limnology of the environment. At summertime temperature, in the presence of light and infochemicals D. pulicaria confined its motion to the first few centimetres of the observation vessel, expressing positive phototaxis. In all other conditions, instead, no significant difference in the time spent in the upper and lower parts of the chamber was recorded. The upward displacement of D. pulicaria recorded in our experiments deviates from the most traditionally accepted downward migration used to move into darker layers to avoid visual predation. Our results highlight additional behavioural mechanisms that might be efficiently exploited by D. pulicaria to contrast predation by L. macrochirus.

Original languageEnglish (US)
Pages (from-to)667-684
Number of pages18
JournalAquatic Ecology
Volume50
Issue number4
DOIs
StatePublished - Dec 1 2016

Funding

The research of M. U. was supported by the MOKA project (Modelling and Observation of zooplanKtonic orgAnisms; ID: RBFR10VF6M) financed by the Italian Ministry of Education, University and Research. The authors gratefully acknowledge the use of the following data sets: Physical Limnology of the North Temperate Lakes Primary Study—Secchi disk depth—Ice duration, North Temperate Lakes Long Term Ecological Research programme ( http://lter.limnology.wisc.edu ), NSF, Emily Stanley and Aaron Stephenson, Center for Limnology, University of Wisconsin-Madison. The authors are thankful to two anonymous Reviewers for stimulating comments on a previous version of the manuscript, and T. Nagai for useful discussion. The generous donation of the VidAna software by M. Hofmann (University of Bonn) is acknowledged. M.U. wishes to single out P. Licandro for support in statistical analysis, and M. Pottek for the realisation of the MOKA cartoon.

Keywords

  • Alarm cues
  • Daphnia pulicaria
  • Fish kairomones
  • Lepomis macrochirus
  • Swimming behaviour

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Fingerprint

Dive into the research topics of 'Behavioural interseasonal adaptations in Daphnia pulicaria (Crustacea: Cladocera) as induced by predation infochemicals'. Together they form a unique fingerprint.

Cite this