How to tuna fish: constraint, convergence, and integration in the neurocranium of pelagiarian fishes.

Autor:	Knapp A; Department of Science, Natural History Museum, London, United Kingdom., Rangel-de Lázaro G; Department of Science, Natural History Museum, London, United Kingdom.; School of Museum Studies, University of Leicester, Leicester, United Kingdom., Friedman M; Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, United States., Johanson Z; Department of Science, Natural History Museum, London, United Kingdom., Evans KM; Department of Biosciences, Rice University, Houston, TX, United States., Giles S; Department of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom., Beckett HT; Department of Biology, King's High School for Girls, Warwick, United Kingdom., Goswami A; Department of Science, Natural History Museum, London, United Kingdom.
Jazyk:	angličtina
Zdroj:	Evolution; international journal of organic evolution [Evolution] 2023 Jun 01; Vol. 77 (6), pp. 1277-1288.
DOI:	10.1093/evolut/qpad056
Abstrakt:	Morphological evolution of the vertebrate skull has been explored across a wide range of tetrapod clades using geometric morphometrics, but the application of these methods to teleost fishes, accounting for roughly half of all vertebrate species, has been limited. Here we present the results of a study investigating 3D morphological evolution of the neurocranium across 114 species of Pelagiaria, a diverse clade of open-ocean teleost fishes that includes tuna and mackerel. Despite showing high shape disparity overall, taxa from all families fall into three distinct morphological clusters. Convergence in shape within clusters is high, and phylogenetic signal in shape data is significant but low. Neurocranium shape is significantly correlated with body elongation and significantly but weakly correlated with size. Diet and habitat depth are weakly correlated with shape, and nonsignificant after accounting for phylogeny. Evolutionary integration in the neurocranium is high, suggesting that convergence in skull shape and the evolution of extreme morphologies are associated with the correlated evolution of neurocranial elements. These results suggest that shape evolution in the pelagiarian neurocranium reflects the extremes in elongation found in body shape but is constrained along relatively few axes of variation, resulting in repeated evolution toward a restricted range of morphologies. (© The Author(s) 2023. Published by Oxford University Press on behalf of The Society for the Study of Evolution (SSE).)
Databáze:	MEDLINE
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