Context-dependent individual behavioral consistency in Daphnia

Research output: Contribution to journalArticle

Abstract

The understanding of consistent individual differences in behavior, often termed “personality,” for adapting and coping with threats and novel environmental conditions has advanced considerably during the last decade. However, advancements are almost exclusively associated with higher‐order animals, whereas studies focusing on smaller aquatic organisms are still rare. Here, we show individual differences in the swimming behavior of Daphnia magna, a clonal freshwater invertebrate, before, during, and after being exposed to a lethal threat, ultraviolet radiation (UVR). We show consistency in swimming velocity among both mothers and daughters of D. magna in a neutral environment, whereas this pattern breaks down when exposed to UVR. Our study also, for the first time, illustrates how the ontogenetic development in swimming and refuge‐seeking behavior of young individuals eventually approaches that of adults. Overall, we show that aquatic invertebrates are far from being identical robots, but instead they show considerable individual differences in behavior that can be attributed to both ontogenetic development and individual consistency. Our study also demonstrates, for the first time, that behavioral consistency and repeatability, that is, something resembling “personality,” is context and state dependent in this zooplankter taxa.

Details

Authors
Organisations
External organisations
  • Technical University of Denmark
  • Linnaeus University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Zoology
  • Ecology
Original languageEnglish
Article numbere01679
JournalEcosphere
Volume8
Issue number2
Publication statusPublished - 2017 Feb 16
Publication categoryResearch
Peer-reviewedYes

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