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Neuroforum

Organ der Neurowissenschaftlichen Gesellschaft

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Volume 25, Issue 1

Issues

Fight or flee? Lessons from insects on aggression

Dr. Jan Rillich
  • Corresponding author
  • Universität Leipzig, Fakultät fürLebenswissenschaften, Institut für Biologie, Talstr. 33, 04103 Leipzig, Deutschland Tel Tel.: +49 341 9736988 Leipzig Deutschland
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Prof. Dr. Paul A. Stevenson
  • Corresponding author
  • Universität Leipzig, Fakultät fürLebenswissenschaften, Institut für Biologie, Talstr. 33, 04103 Leipzig, Deutschland Tel +49 341 973 6879 Leipzig Deutschland
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  • De Gruyter OnlineGoogle Scholar
Published Online: 2019-02-08 | DOI: https://doi.org/10.1515/nf-2017-0040

Abstract

Aggression between members of the same species serves to secure resources, but the costs can quickly outweigh benefits. Hence, for aggression to be evolutionarily adaptive, animals must decide when best to flee, rather than fight. How its done, is arguably best understood in crickets. These insects implement the decision by simply modulating the behavioural threshold to flee. This threshold is raised by potentially rewarding experiences (e. g. resource possession), via the amine octopamine, so that the animal is less prone to flee and persists longer in fighting. Conversely, the threshold is lowered by nitric oxide, released in response to aversive stimuli (e. g. the opponent’s agonistic signals), thus increasing the tendency to flee. A cricket then flees, when the sum of its opponent’s actions exceeds the threshold. Subsequently, serotonin keeps the threshold low, so that losers remain submissive; possibly by inhibiting dopamine, which is necessary for recovery of aggression in losers.

Keywords: serotonin; octopamine; nitric oxide; social behaviour; decision making

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About the article

Dr. Jan Rillich

Dr. Jan Rillich is currently a DFG research fellow at the University of Leipzig, where his research with Paul Stevenson focuses on the neuronal mechanisms of aggression in crickets. He studied Biology at the University of Leipzig and obtained his doctorate there in 2006. He has worked as a post doctorate researcher in the laboratories of Jochen Pflüger FU-Berlin and Amir Ayali, Tel Aviv, Israel.

Prof. Dr. Paul A. Stevenson

Prof. Dr. Paul A. Stevenson obtained a Bachelor in Zoology from the University of Nottingham, England followed by a Master in Biology at the University of Konstanz, Germany, where he also obtained his Doctorate in 1988 under Wolfram Kutsch. He has worked as Assistant Professor in Jochen Pflüger’s lab in Berlin, and Klaus Schildberger’s lab in Leipzig, where he was appointed to Associate Professor (ausserplanmässig) in 2009. His research focuses on the neuronal basis of locomotion and social behaviour in insects and how this is controlled by biogenic amines.


Published Online: 2019-02-08

Published in Print: 2019-02-07


Citation Information: Neuroforum, Volume 25, Issue 1, Pages 3–13, ISSN (Online) 2363-7013, ISSN (Print) 0947-0875, DOI: https://doi.org/10.1515/nf-2017-0040.

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