TY - JOUR
T1 - Phylogenomics illuminates the evolution of bobtail and bottletail squid (order Sepiolida)
AU - Sanchez, Gustavo
AU - Fernández-Álvarez, Fernando
AU - Taite, Morag
AU - Sugimoto, Chikatoshi
AU - Jolly, Jeffrey
AU - Simakov, Oleg
AU - Marlétaz, Ferdinand
AU - Allcock, Louise
AU - Rokhsar, Daniel S.
N1 - Funding Information:
This project was funded by the Okinawa Institute of Science and Technology (OIST) to the Molecular Genetic Units. D.S.R. is also grateful for the generous support of the Marthella Foskett-Brown Chair in Biology and from the Chan-Zuckerberg BioHub. We wish to thank the staff of the OIST DNA sequencing section for the library preparation and sequencing. G.S. and M.T. wish to especially thank Amanda Reid from the Australian Museum Research Institute for her help in identifying Rossia sp., Inioteuthis japonica, and Euprymna Type 4; and for providing samples of Euprymna pardalota, Iriodioteuthis sp., Sepiolinae sp., and Heteroteuthis hawaiiensis used in this study. M.T. also wants to thanks to Professor Kat Bolstad, head of the AUT Lab for Cephalopod Ecology & Systematics at the Institute for Applied Ecology New Zealand for kindly sharing the specimens of Heteroteuthis dagamensis and Sepiadariidae sp., and to Professor Jan Strugnell from the James Cook University in Australia for Stoloteuthis sp.. F.Á.F-Á wants to thank Elena Guerrero (ICM‐CSIC) for performing the curation of some morphological vouchers in the Biological Reference Collections (CBR‐ICM) at the Institut de Ciències del Mar (ICM-CSIC), Barcelona, Spain. S.C. wishes thanks to Dr. Hiroshi Miyagai who through the Fisheries Cooperative Association of Hamasaka in Hyogo Prefecture, collected samples of Rossia sp. and to Dr. Hideo Takahara from the Fisheries and Oceans Hakodate for samples from Niigata Prefecture. J.J. and S.C. also wish to thank Ryo Minemizu from Ryo Minemizu Photo Office for the collection of Euprymna sp. Type 4. F.Á.F-Á was supported by the Irish Research Council-Government of Ireland Post-doctoral Fellowship Award (Ref. GOIPD/2019/460). M.T. is funded by a Ph.D. fellowship from the Irish Research Council and is supported by the Dr. Tony Ryan Research Fund.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Bobtail and bottletail squid are small cephalopods with striking anti-predatory defensive mechanisms, bioluminescence, and complex morphology; that inhabit nektobenthic and pelagic environments around the world’s oceans. Yet, the evolution and diversification of these animals remain unclear. Here, we used shallow genome sequencing of thirty-two bobtail and bottletail squids to estimate their evolutionary relationships and divergence time. Our phylogenetic analyses show that each of Sepiadariidae, Sepiolidae, and the three subfamilies of the Sepiolidae are monophyletic. We found that the ancestor of the Sepiolinae very likely possessed a bilobed light organ with bacteriogenic luminescence. Sepiolinae forms a sister group to Rossinae and Heteroteuthinae, and split into Indo-Pacific and Atlantic-Mediterranean lineages. The origin of these lineages coincides with the end of the Tethys Sea and the separation of these regions during the Eocene and the beginning of the Oligocene. We demonstrated that sepiolids radiated after the Late Cretaceous and that major biogeographic events might have shaped their distribution and speciation.
AB - Bobtail and bottletail squid are small cephalopods with striking anti-predatory defensive mechanisms, bioluminescence, and complex morphology; that inhabit nektobenthic and pelagic environments around the world’s oceans. Yet, the evolution and diversification of these animals remain unclear. Here, we used shallow genome sequencing of thirty-two bobtail and bottletail squids to estimate their evolutionary relationships and divergence time. Our phylogenetic analyses show that each of Sepiadariidae, Sepiolidae, and the three subfamilies of the Sepiolidae are monophyletic. We found that the ancestor of the Sepiolinae very likely possessed a bilobed light organ with bacteriogenic luminescence. Sepiolinae forms a sister group to Rossinae and Heteroteuthinae, and split into Indo-Pacific and Atlantic-Mediterranean lineages. The origin of these lineages coincides with the end of the Tethys Sea and the separation of these regions during the Eocene and the beginning of the Oligocene. We demonstrated that sepiolids radiated after the Late Cretaceous and that major biogeographic events might have shaped their distribution and speciation.
UR - http://www.scopus.com/inward/record.url?scp=85109044348&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85109044348&partnerID=8YFLogxK
U2 - 10.1038/s42003-021-02348-y
DO - 10.1038/s42003-021-02348-y
M3 - Article
C2 - 34188187
AN - SCOPUS:85109044348
VL - 4
JO - Communications Biology
JF - Communications Biology
SN - 2399-3642
IS - 1
M1 - 819
ER -