Dr Nicholas Horrocks has been awarded a three-year Leverhulme Early Career Fellowship to continue working on our study systems in Zambia. Nick’s fellowship project is entitled “Phenotypic plasticity in reproductive investment in a rapidly changing world” and will focus on whether ground-nesting birds at our study site (plovers, coursers and nightjars) can adapt to increased nest disturbance and hotter temperatures due to climate change. He will also investigate whether cuckoo finch mothers pre-adapt their chicks to thrive in the specific host nests that different cuckoo finch races parasitise. Congratulations Nick, and thank you to The Leverhulme Trust for their fantastic support once again.
Our paper ‘Why and how to apply Weber’s Law to coevolution and mimicry’ has been published in the journal Evolution. This perspectives paper, written by Tanmay Dixit, Eleanor Caves, Claire Spottiswoode, and Nicholas Horrocks, argues that Weber’s Law of proportional processing can lead to otherwise counterintuitive predictions about the evolutionary trajectories of mimicry systems. Weber’s Law states that when the magnitude of a stimulus is large, it is more difficult to discriminate a change or difference from that stimulus. In other words, relative differences are more salient than absolute differences. We show that Weber’s Law could have implications for mimicry: when stimulus magnitudes are high, it should be more difficult to discriminate a model from a mimic. This leads to testable predictions about evolutionary trajectories of models and mimics. We also present a framework for testing Weber’s Law and its implications for coevolution.