Unexpectedly uneven distribution of functional trade-offs explains cranial morphological diversity in carnivores

Sansalone, G.; Wroe, S.; Coates, G.; Attard, M.R.G. ORCID: https://orcid.org/0000-0002-8509-3677; Fruciano, C.. 2024 Unexpectedly uneven distribution of functional trade-offs explains cranial morphological diversity in carnivores. Nature Communications, 15, 3275. 15, pp. 10.1038/s41467-024-47620-x

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Text (Open Access) Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. s41467-024-47620-x.pdf - Published Version Available under License Creative Commons Attribution 4.0. Download (2MB) | Preview

Abstract/Summary

Functional trade-offs can affect patterns of morphological and ecological evolution as well as the magnitude of morphological changes through evolutionary time. Using morpho-functional landscape modelling on the cranium of 132 carnivore species, we focused on the macroevolutionary effects of the trade-off between bite force and bite velocity. Here, we show that rates of evolution in form (morphology) are decoupled from rates of evolution in function. Further, we found theoretical morphologies optimising for velocity to be more diverse, while a much smaller phenotypic space was occupied by shapes optimising force. This pattern of differential representation of different functions in theoretical morphological space was highly correlated with patterns of actual morphological disparity. We hypothesise that many-to-one mapping of cranium shape on function may prevent the detection of direct relationships between form and function. As comparatively only few morphologies optimise bite force, species optimising this function may be less abundant because they are less likely to evolve. This, in turn, may explain why certain clades are less variable than others. Given the ubiquity of functional trade-offs in biological systems, these patterns may be general and may help to explain the unevenness of morphological and functional diversity across the tree of life.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1038/s41467-024-47620-x
ISSN:	2041-1723
Date made live:	19 Apr 2024 09:36 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/537319

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