Mexican Waves: The Adaptive Value of Collective Behaviour

Add to your list(s) Download to your calendar using vCal

• Jens Krause, IGB Berlin
• Tuesday 17 January 2023, 13:00-14:00
• Main Zoology Lecture Theatre and online via Zoom - contact organiser for details.

If you have a question about this talk, please contact Dr Emily Mitchell.

This talk has been canceled/deleted

The collective behaviour of animals has attracted considerable attention in recent years, with many studies exploring how local interactions between individuals can give rise to global group properties. The functional aspects of collective behaviour are less well studied and relatively few studies have investigated the adaptive benefits of collective behaviour in situations where prey are attacked by predators. This is unsurprising because predator-prey interactions in the field are difficult to observe. Furthermore, the focus in recent studies on predator-prey interactions has been on the collective behaviour of the prey rather than on the behaviour of the predator. In my talk I present a field study that investigated the antipredator benefits of waves produced by fish at the water surface when diving down collectively in response to attacks of avian predators. Fish engaged in surface waves that were highly conspicuous, repetitive, and rhythmic involving many thousands of individuals for up to 2 min. Collective fish waves increased the time birds waited until their next attack and also reduced capture probability in three avian predators that greatly differed in size, appearance and hunting strategy. Taken together, these results support a generic antipredator function of fish waves which could be a result of a confusion effect or a consequence of waves acting as a perception advertisement, which requires further exploration.

This talk is part of the Behaviour, Ecology & Evolution Seminar Series series.

This talk is included in these lists:

This talk is not included in any other list

Note that ex-directory lists are not shown.