Charting the course of pinniped evolution: insights from molecular phylogeny and fossil record integration

Author:

Park Travis123ORCID,Burin Gustavo2,Lazo-Cancino Daniela4ORCID,Rees Joseph P G25ORCID,Rule James P12ORCID,Slater Graham J6,Cooper Natalie2ORCID

Affiliation:

1. School of Biological Sciences, Monash University , Melbourne, Australia

2. Natural History Museum London Science Group, , London, United Kingdom

3. Museums Victoria Sciences, , Melbourne, Australia

4. Universidad de Concepción Laboratorio de Mastozoología, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, , Concepción, Chile

5. Imperial College London Department of Life Sciences, , London, United Kingdom

6. University of Chicago Department of the Geophysical Sciences, , Chicago, IL, United States

Abstract

Abstract Pinnipeds (seals, sea lions, walruses, and their fossil relatives) are one of the most successful mammalian clades to live in the oceans. Despite a well-resolved molecular phylogeny and a global fossil record, a complete understanding of their macroevolutionary dynamics remains hampered by a lack of formal analyses that combine these 2 rich sources of information. We used a meta-analytic approach to infer the most densely sampled pinniped phylogeny to date (36 recent and 93 fossil taxa) and used phylogenetic paleobiological methods to study their diversification dynamics and biogeographic history. Pinnipeds mostly diversified at constant rates. Walruses, however, experienced rapid turnover in which extinction rates ultimately exceeded speciation rates from 12 to 6 Ma, possibly due to changing sea levels and/or competition with otariids (eared seals). Historical biogeographic analyses, including fossil data, allowed us to confidently identify the North Pacific and the North Atlantic (plus or minus Paratethys) as the ancestral ranges of Otarioidea (eared seals + walrus) and crown phocids (earless seals), respectively. Yet, despite the novel addition of stem pan-pinniped taxa, the region of origin for Pan-Pinnipedia remained ambiguous. These results suggest further avenues of study in pinnipeds and provide a framework for investigating other groups with substantial extinct and extant diversity.

Funder

Leverhulme Trust Research Project

ARC DECRA Fellowship

Agencia Nacional de Investigación y Desarrollo (ANID) Doctoral Fellowship

UKRI Fellowship

Engineering and Physical Sciences Research Council

Publisher

Oxford University Press (OUP)

Reference129 articles.

1. Fossils provide better estimates of ancestral body size than do extant taxa in fishes;Albert;Acta Zoologica,2009

2. Analysis of comparative data with hierarchical autocorrelation;Ané,2008

3. Pinniped phylogeny and a new hypothesis for their origin and dispersal;Arnason;Molecular Phylogenetics and Evolution,2006

4. Ignoring stratigraphic age uncertainty leads to erroneous estimates of species divergence times under the fossilized birth–death process;Barido-Sottani;Proceedings of the Royal Society of London, Series B: Biological Sciences,2019

5. Combining trees as a way of combining data sets for phylogenetic inference, and the desirability of combining gene trees;Baum;Taxon,1992

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3