Depth as a Driver of Evolution in the Deep Sea: Insights from Grenadiers (Gadiformes: Macrouridae) of the Genus Coryphaenoides

Authors

Michelle R. Gaither, Durham University - United Kingdom; California Academy of Sciences
Biagio Violi, Durham University - United Kingdom; Istituto Nazionale Biostrutture e Biosistemi - Rome, Italy; University of Genoa - Italy
Howard W. I. Gray, Durham University - United Kingdom
Francis Neat, Marine Scotland-Science - Aberdeen, United Kingdom
Jeffrey C. Drazen, University of Hawaii
R. Dean Grubbs, Florida State University
Adela Roa-Varon, Virginia Institute of Marine Science
Tracey Sutton, Nova Southeastern UniversityFollow
A. Rus Hoelzel, Durham University - United Kingdom

ORCID

0000-0002-5280-7071

Document Type

Article

Publication Title

Molecular Phylogenetics and Evolution

ISSN

1055-7903

Publication Date

11-2016

Keywords

Macrouridae, Hydrostatic pressure, Rattails, Phylogenetics, Deep-sea fishes, Abyssal

Abstract

Here we consider the role of depth as a driver of evolution in a genus of deep-sea fishes. We provide a phylogeny for the genus Coryphaenoides (Gadiformes: Macrouridae) that represents the breadth of habitat use and distributions for these species. In our consensus phylogeny species found at abyssal depths (>4000 m) form a well-supported lineage, which interestingly also includes two non-abyssal species, C. striaturus and C. murrayi, diverging from the basal node of that lineage. Biogeographic analyses suggest the genus may have originated in the Southern and Pacific Oceans where contemporary species diversity is highest. The abyssal lineage seems to have arisen secondarily and likely originated in the Southern/Pacific Oceans but diversification of this lineage occurred in the Northern Atlantic Ocean. All abyssal species are found in the North Atlantic with the exception of C. yaquinae in the North Pacific and C. filicauda in the Southern Ocean. Abyssal species tend to have broad depth ranges and wide distributions, indicating that the stability of the deep oceans and the ability to live across wide depths may promote population connectivity and facilitate large ranges. We also confirm that morphologically defined subgenera do not agree with our phylogeny and that the Giant grenadier (formerly Albatrossia pectoralis) belongs to Coryphaenoides, indicating that a taxonomic revision of the genus is needed. We discuss the implications of our findings for understanding the radiation and diversification of this genus, and the likely role of adaptation to the abyss.

DOI

10.1016/j.ympev.2016.07.027

Volume

104

First Page

73

Last Page

82

Comments

©2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/)

Open Access funded by Natural Environment Research Council

Under a Creative Commons license

Additional Comments

Natural Environment Research Council (United Kingdom) grant #: NE/K005359/1

NSUWorks Citation

Michelle R. Gaither, Biagio Violi, Howard W. I. Gray, Francis Neat, Jeffrey C. Drazen, R. Dean Grubbs, Adela Roa-Varon, Tracey Sutton, and A. Rus Hoelzel. 2016. Depth as a Driver of Evolution in the Deep Sea: Insights from Grenadiers (Gadiformes: Macrouridae) of the Genus Coryphaenoides .Molecular Phylogenetics and Evolution : 73 -82. https://nsuworks.nova.edu/occ_facarticles/781.