New study from the Behavioural Ecology and Evolution lab on continent-wide song patterns published in Ecology Letters

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28 Ιουλίου, 2022
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Νέα μελέτη από το Τμήμα Βιολογικών Επιστημών του Εργαστηρίου Αναπτυξιακής Βιολογίας και Βιοαπεικόνισης
28 Ιουλίου, 2022
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Temperature-related physiological constraints shape functional traits in animals at a global scale, yet the implications of continent-wide morphological variation on acoustic communication signals is little understood. This is despite a well-established relationship between body size and acoustic signal frequencies across the animal kingdom. In a continent-wide study on birds, we show that song frequency mirrors predictable patterns of body size variation along a latitudinal and elevational gradient, with larger birds at higher latitudes and elevation in accordance with Bergmann’s rule.  PhD student Matteo Sebastianelli performed analyses on data collected by the Kirschel lab across Africa over two decades, and found that effects on song pitch in accordance with Bergmann’s rule dwarfed any effects of the widely accepted acoustic adaptation hypothesis, which posits that song pitch is shaped by vegetation structure. Our study suggests that because of temperature-related physiological constraints on endothermic animals, climate change may drive predictable shifts in the frequency of acoustic signals that play a critical role in animal ecology and evolution. 

 

This work was published in Ecology Letters, one of the leading journals in the field of Ecology.

 

Link: https://onlinelibrary.wiley.com/doi/10.1111/ele.14102