Feeding ecology has shaped the evolution of modern sharks

Bazzi, Mohamad; Campione, Nicolás E.; Kear, Benjamin P.; Pimiento, Catalina; Ahlberg, Per E.

doi:10.1016/j.cub.2021.09.028

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Feeding ecology has shaped the evolution of modern sharks

Mohamad Bazzi

, Nicolás E. Campione, Benjamin P. Kear

, Catalina Pimiento

, Per E. Ahlberg

Current Biology, Volume: 31, Issue: 23, Pages: 5138 - 5148.e4

Swansea University Author: Catalina Pimiento

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DOI (Published version): 10.1016/j.cub.2021.09.028

Abstract

Sharks are iconic predators in today’s oceans, yet their modern diversity has ancient origins. In particular, present hypotheses suggest that a combination of mass extinction, global climate change, and competition has regulated the community structure of dominant mackerel (Lamniformes) and ground (...

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Published in:	Current Biology
ISSN:	0960-9822
Published:	Elsevier BV 2021
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa58375

first_indexed	2021-10-18T08:58:10Z
last_indexed	2025-04-16T03:59:32Z
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spelling	2025-04-15T13:03:18.9861261 v2 58375 2021-10-18 Feeding ecology has shaped the evolution of modern sharks 7dd222e2a1d5971b3f3963f0501a9d4f 0000-0002-5320-7246 Catalina Pimiento Catalina Pimiento true false 2021-10-18 BGPS Sharks are iconic predators in today’s oceans, yet their modern diversity has ancient origins. In particular, present hypotheses suggest that a combination of mass extinction, global climate change, and competition has regulated the community structure of dominant mackerel (Lamniformes) and ground (Carcharhiniformes) sharks over the last 66 million years. However, while these scenarios advocate an interplay of major abiotic and biotic events, the precise drivers remain obscure. Here, we focus on the role of feeding ecology using a geometric morphometric analysis of 3,837 fossil and extant shark teeth. Our results reveal that morphological segregation rather than competition has characterized lamniform and carcharhiniform evolution. Moreover, although lamniforms suffered a long-term disparity decline potentially linked to dietary “specialization,” their recent disparity rivals that of “generalist” carcharhiniforms. We further confirm that low eustatic sea levels impacted lamniform disparity across the end-Cretaceous mass extinction. Adaptations to changing prey availability and the proliferation of coral reef habitats during the Paleogene also likely facilitated carcharhiniform dispersals and cladogenesis, underpinning their current taxonomic dominance. Ultimately, we posit that trophic partitioning and resource utilization shaped past shark ecology and represent critical determinants for their future species survivorship. Journal Article Current Biology 31 23 5138 5148.e4 Elsevier BV 0960-9822 Lamniformes; Carcharhiniformes; geometric morphometrics; dental disparity; feeding ecology; environmental change; ecomorphology 6 12 2021 2021-12-06 10.1016/j.cub.2021.09.028 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Our research was supported by a scholarship from E. and K.G. Lennanders Foundation to M.B. and a Wallenberg Scholarship from the Knut and Alice Wallenberg Foundation to P.E.A. N.E.C. is funded by an Australian Research Council Discovery Early Career Research Award (DE190101423). B.P.K. acknowledges a Swedish Research Council Project Grant (2020-3423). C.P. is financed by a PRIMA grant from the Swiss National Science Foundation. 2025-04-15T13:03:18.9861261 2021-10-18T09:55:56.4508374 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Mohamad Bazzi 0000-0002-9495-0781 1 Nicolás E. Campione 2 Benjamin P. Kear 0000-0002-3128-3141 3 Catalina Pimiento 0000-0002-5320-7246 4 Per E. Ahlberg 5 58375__21197__01a73b6a3b354851a114b38d111fa703.pdf 58375.pdf 2021-10-18T09:57:05.1102473 Output 1828344 application/pdf Version of Record true This is an open access article under the CC BY license true eng https://creativecommons.org/licenses/by/4.0/
title	Feeding ecology has shaped the evolution of modern sharks
spellingShingle	Feeding ecology has shaped the evolution of modern sharks Catalina Pimiento
title_short	Feeding ecology has shaped the evolution of modern sharks
title_full	Feeding ecology has shaped the evolution of modern sharks
title_fullStr	Feeding ecology has shaped the evolution of modern sharks
title_full_unstemmed	Feeding ecology has shaped the evolution of modern sharks
title_sort	Feeding ecology has shaped the evolution of modern sharks
author_id_str_mv	7dd222e2a1d5971b3f3963f0501a9d4f
author_id_fullname_str_mv	7dd222e2a1d5971b3f3963f0501a9d4f_***_Catalina Pimiento
author	Catalina Pimiento
author2	Mohamad Bazzi Nicolás E. Campione Benjamin P. Kear Catalina Pimiento Per E. Ahlberg
format	Journal article
container_title	Current Biology
container_volume	31
container_issue	23
container_start_page	5138
publishDate	2021
institution	Swansea University
issn	0960-9822
doi_str_mv	10.1016/j.cub.2021.09.028
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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description	Sharks are iconic predators in today’s oceans, yet their modern diversity has ancient origins. In particular, present hypotheses suggest that a combination of mass extinction, global climate change, and competition has regulated the community structure of dominant mackerel (Lamniformes) and ground (Carcharhiniformes) sharks over the last 66 million years. However, while these scenarios advocate an interplay of major abiotic and biotic events, the precise drivers remain obscure. Here, we focus on the role of feeding ecology using a geometric morphometric analysis of 3,837 fossil and extant shark teeth. Our results reveal that morphological segregation rather than competition has characterized lamniform and carcharhiniform evolution. Moreover, although lamniforms suffered a long-term disparity decline potentially linked to dietary “specialization,” their recent disparity rivals that of “generalist” carcharhiniforms. We further confirm that low eustatic sea levels impacted lamniform disparity across the end-Cretaceous mass extinction. Adaptations to changing prey availability and the proliferation of coral reef habitats during the Paleogene also likely facilitated carcharhiniform dispersals and cladogenesis, underpinning their current taxonomic dominance. Ultimately, we posit that trophic partitioning and resource utilization shaped past shark ecology and represent critical determinants for their future species survivorship.
published_date	2021-12-06T04:58:12Z
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Feeding ecology has shaped the evolution of modern sharks

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