Otoliths of the deepest-living fishes
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Bony fishes have a well-developed acoustic and vestibular sense, which is registered in the highly specialized otolithic end-organ containing a pair of three aragonitic otoliths. Usually, the largest otolith is the sagitta, which is considered to be primarily responsible for sound detection and is known to be morphologically diverse and specific across species and higher taxonomic levels. We investigated sagittal otoliths of abyssal and hadal fishes of three families containing taxa adapted to these deep habitats: the Liparidae (snailfishes), Macrouridae (rattails), and Ophidiidae (cusk eels). The purpose of our study was to ascertain whether specific depth-dependent effects on otolith size or morphology could be observed in comparison to the shallower-living counterparts in these groups. We were able to identify a trend toward size reduction in otoliths with depth and certain “simplifications” in otolith morphology. However, we also observed that such trends would only become detectable when studying otoliths within well-defined clades because of the many complexities that occur in otolith morphologies that are unrelated to habitat depth. We propose future work to study freshly caught hadal liparids for the physiology of the otolith end-organ and macula acustica to learn more about the functioning of the organ in fishes living at great depths. Together these findings provide new insights into the drivers of otolith diversity and the evolution of fishes into deep-sea environments.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 104079 |
| Tidsskrift | Deep-Sea Research Part I: Oceanographic Research Papers |
| Vol/bind | 198 |
| Antal sider | 15 |
| ISSN | 0967-0637 |
| DOI | |
| Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:
The authors thank the ships, captains, crews, and scientific parties that collected specimens used in this study. We cordially thank the following colleagues and institutions for providing access to extract otoliths from voucher specimens for this study: O. Crimmen, and J. Maclain (Natural History Museum of U.K., London), H. Endo (Kochi University, Department of Biology, Faculty of Science, Kochi), D. Catania, and T. Iwamoto (California Academy of Science, San Francisco), K. Hartel, and A. Williston (Museum of Comparative Zoology, Boston), G. Duhamel, and Z. Gabsi (Muséum National d’Histoire Naturelle, Paris), A. Stewart (National Museum of New Zealand, Te Papa Tongarewa, Wellington), G. Shinohara (National Science Museum, Department of Zoology, Tokyo), B. Frable, and J. Seigel (Scripps Institution of Oceanography, La Jolla), J. Williams, D. Smith, and D. Johnson (National Museum of Natural History, Washington D.C.), E. Hilton (Virginia Institute of Marine Science, Virginia), S. Knudsen, P. Møller, and J. Nielsen (Zoological Museum, University of Copenhagen), S. Mishra (Zoological Survey of India, Kolkata). Thanks are extended to the National Science Foundation ( USA ) and Schmidt Ocean Institute for funding the invaluable hadal collections presented here. We also extend our sincere gratitude to the museum collections and collections teams who curate and preserve specimens, providing invaluable resources for understanding life on our planet. For specimen access and curation for CT scanned specimens, we thank B. Frable, P. Hastings, and H.J. Walker (Scripps Institution of Oceanography, USA), K. Maslenikov, L. Tornabene (Burke Museum, University of Washington, USA). Thanks to the Karel F. Liem Bioimaging Center at Friday Harbor Labs, University of Washington, and to M. Kolmann (University of Louisville), A. von Hagel (University of Washington), A. Dias (Sonoma State University), R. Martin (University of Kansas), and S. Raredon (Smithsonian Institution) for collecting radiographs and CT scans used to provide contextual size data of specimens in this study. We also thank the State University of New York at Geneseo , USA for salary support of M. Gerringer in conducting this work.
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© 2023 Elsevier Ltd
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