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Sackville MA, Gillis JA, Brauner CJ. The origins of gas exchange and ion regulation in fish gills: evidence from structure and function. J Comp Physiol B 2024:10.1007/s00360-024-01545-5. [PMID: 38530435 DOI: 10.1007/s00360-024-01545-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/15/2024] [Accepted: 02/12/2024] [Indexed: 03/28/2024]
Abstract
Gill function in gas exchange and ion regulation has played key roles in the evolution of fishes. In this review, we summarize data from the fields of palaeontology, developmental biology and comparative physiology for when and how the gills first acquired these functions. Data from across disciplines strongly supports a stem vertebrate origin for gas exchange structures and function at the gills with the emergence of larger, more active fishes. However, the recent discovery of putative ionocytes in extant cephalochordates and hemichordates suggests that ion regulation at gills might have originated much earlier than gas exchange, perhaps in the ciliated pharyngeal arches in the last common ancestor of deuterostomes. We hypothesize that the ancestral form of ion regulation served a filter-feeding function in the ciliated pharyngeal arches, and was later coopted in vertebrates to regulate extracellular ion and acid-base balance. We propose that future research should explore ionocyte homology and function across extant deuterostomes to test this hypothesis and others in order to determine the ancestral origins of ion regulation in fish gills.
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Affiliation(s)
| | - J Andrew Gillis
- Bay Paul Centre, Marine Biological Laboratory, Woods Hole, MA, USA
| | - Colin J Brauner
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
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2
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Henderson S, Dunne EM, Fasey SA, Giles S. The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects. Biol Rev Camb Philos Soc 2023; 98:284-315. [PMID: 36192821 PMCID: PMC10091770 DOI: 10.1111/brv.12907] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 01/12/2023]
Abstract
Actinopterygii makes up half of living vertebrate diversity, and study of fossil members during their Palaeozoic rise to dominance has a long history of descriptive work. Although research interest into Palaeozoic actinopterygians has increased in recent years, broader patterns of diversity and diversity dynamics remain critically understudied. Past studies have investigated macroevolutionary trends in Palaeozoic actinopterygians in a piecemeal fashion, variably using existing compendia of vertebrates or literature-based searches. Here, we present a comprehensive occurrence-based dataset of actinopterygians spanning the whole of the Palaeozoic. We use this to produce the first through-Palaeozoic trends in genus and species counts for Actinopterygii. Diversity through time generally tracks metrics for sampling, while major taxonomic problems pervading the Palaeozoic actinopterygian record obscure diversity trends. Many described species are concentrated in several particularly problematic 'waste-basket' genera, hiding considerable morphological and taxonomic diversity. This taxonomic confusion also feeds into a limited understanding of phylogenetic relationships. A heavy sampling bias towards Europe and North America exists in both occurrence databases and available phylogenetic matrices, with other regions underrepresented despite yielding important data. Scrutiny of the extent to which spatial biases influence the actinopterygian record is lacking, as is research on other forms of bias. Low richness in some time periods may be linked to geological biases, while the effects of taphonomic biases on Palaeozoic actinopterygians have not yet been investigated. Efforts are already underway both to redescribe poorly defined taxa and to describe taxa from underrepresented regions, helping to address taxonomic issues and accuracy of occurrence data. New methods of sampling standardisation utilising up-to-date occurrence databases will be critical in teasing apart biological changes in diversity and those resulting from bias. Lastly, continued phylogenetic work will enable the use of phylogenetic comparative methods to elucidate the origins of actinopterygian biogeography and subsequent patterns of radiation throughout their rise to dominate aquatic faunas.
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Affiliation(s)
- Struan Henderson
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Emma M Dunne
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,GeoZentrum Nordbayern, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Loewenichstraße 28, Erlangen, 91054, Germany
| | - Sophie A Fasey
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Sam Giles
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,Department of Earth Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK
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3
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Mathai PP, Byappanahalli MN, Johnson NS, Sadowsky MJ. Gut Microbiota Associated With Different Sea Lamprey ( Petromyzon marinus) Life Stages. Front Microbiol 2021; 12:706683. [PMID: 34539605 PMCID: PMC8446677 DOI: 10.3389/fmicb.2021.706683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/31/2021] [Indexed: 11/25/2022] Open
Abstract
Sea lamprey (SL; Petromyzon marinus), one of the oldest living vertebrates, have a complex metamorphic life cycle. Following hatching, SL transition into a microphagous, sediment burrowing larval stage, and after 2–10+ years, the larvae undergo a dramatic metamorphosis, transforming into parasitic juveniles that feed on blood and bodily fluids of fishes; adult lamprey cease feeding, spawn, and die. Since gut microbiota are critical for the overall health of all animals, we examined the microbiota associated with SLs in each life history stage. We show that there were significant differences in the gut bacterial communities associated with the larval, parasitic juvenile, and adult life stages. The transition from larval to the parasitic juvenile stage was marked with a significant shift in bacterial community structure and reduction in alpha diversity. The most abundant SL-associated phyla were Proteobacteria, Fusobacteria, Bacteroidetes, Verrucomicrobia, Actinobacteria, and Firmicutes, with their relative abundances varying among the stages. Moreover, while larval SL were enriched with unclassified Fusobacteriaceae, unclassified Verrucomicrobiales and Cetobacterium, members of the genera with fastidious nutritional requirements, such as Streptococcus, Haemophilus, Cutibacterium, Veillonella, and Massilia, were three to four orders of magnitude greater in juveniles than in larvae. In contrast, adult SLs were enriched with Aeromonas, Iodobacter, Shewanella, and Flavobacterium. Collectively, our findings show that bacterial communities in the SL gut are dramatically different among its life stages. Understanding how these communities change over time within and among SL life stages may shed more light on the role that these gut microbes play in host growth and fitness.
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Affiliation(s)
- Prince P Mathai
- BioTechnology Institute, University of Minnesota, St. Paul, MN, United States
| | - Muruleedhara N Byappanahalli
- U.S. Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, Chesterton, IN, United States
| | - Nicholas S Johnson
- U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, Millersburg, MI, United States
| | - Michael J Sadowsky
- BioTechnology Institute, University of Minnesota, St. Paul, MN, United States.,Department of Soil, Water and Climate, University of Minnesota, St. Paul, MN, United States.,Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN, United States
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4
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Aase-Remedios ME, Ferrier DEK. Improved Understanding of the Role of Gene and Genome Duplications in Chordate Evolution With New Genome and Transcriptome Sequences. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.703163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Comparative approaches to understanding chordate genomes have uncovered a significant role for gene duplications, including whole genome duplications (WGDs), giving rise to and expanding gene families. In developmental biology, gene families created and expanded by both tandem and WGDs are paramount. These genes, often involved in transcription and signalling, are candidates for underpinning major evolutionary transitions because they are particularly prone to retention and subfunctionalisation, neofunctionalisation, or specialisation following duplication. Under the subfunctionalisation model, duplication lays the foundation for the diversification of paralogues, especially in the context of gene regulation. Tandemly duplicated paralogues reside in the same regulatory environment, which may constrain them and result in a gene cluster with closely linked but subtly different expression patterns and functions. Ohnologues (WGD paralogues) often diversify by partitioning their expression domains between retained paralogues, amidst the many changes in the genome during rediploidisation, including chromosomal rearrangements and extensive gene losses. The patterns of these retentions and losses are still not fully understood, nor is the full extent of the impact of gene duplication on chordate evolution. The growing number of sequencing projects, genomic resources, transcriptomics, and improvements to genome assemblies for diverse chordates from non-model and under-sampled lineages like the coelacanth, as well as key lineages, such as amphioxus and lamprey, has allowed more informative comparisons within developmental gene families as well as revealing the extent of conserved synteny across whole genomes. This influx of data provides the tools necessary for phylogenetically informed comparative genomics, which will bring us closer to understanding the evolution of chordate body plan diversity and the changes underpinning the origin and diversification of vertebrates.
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Warrington RE, Davies WIL, Hemmi JM, Hart NS, Potter IC, Collin SP, Hunt DM. Visual opsin expression and morphological characterization of retinal photoreceptors in the pouched lamprey (Geotria australis, Gray). J Comp Neurol 2020; 529:2265-2282. [PMID: 33336375 DOI: 10.1002/cne.25092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 12/09/2020] [Accepted: 12/09/2020] [Indexed: 11/09/2022]
Abstract
Lampreys are extant members of the agnathan (jawless) vertebrates that diverged ~500 million years ago, during a critical stage of vertebrate evolution when image-forming eyes first emerged. Among lamprey species assessed thus far, the retina of the southern hemisphere pouched lamprey, Geotria australis, is unique, in that it possesses morphologically distinct photoreceptors and expresses five visual photopigments. This study focused on determining the number of different photoreceptors present in the retina of G. australis and whether each cell type expresses a single opsin class. Five photoreceptor subtypes were identified based on ultrastructure and differential expression of one of each of the five different visual opsin classes (lws, sws1, sws2, rh1, and rh2) known to be expressed in the retina. This suggests, therefore, that the retina of G. australis possesses five spectrally and morphologically distinct photoreceptors, with the potential for complex color vision. Each photoreceptor subtype was shown to have a specific spatial distribution in the retina, which is potentially associated with changes in spectral radiance across different lines of sight. These results suggest that there have been strong selection pressures for G. australis to maintain broad spectral sensitivity for the brightly lit surface waters that this species inhabits during its marine phase. These findings provide important insights into the functional anatomy of the early vertebrate retina and the selection pressures that may have led to the evolution of complex color vision.
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Affiliation(s)
- Rachael E Warrington
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA.,School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Oceans Institute, The University of Western Australia, Perth, Western Australia, Australia
| | - Wayne I L Davies
- School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Oceans Institute, The University of Western Australia, Perth, Western Australia, Australia.,Umeå Centre for Molecular Medicine, Umeå University, Umeå, Sweden.,Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Perth, Western Australia, Australia.,School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - Jan M Hemmi
- School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Oceans Institute, The University of Western Australia, Perth, Western Australia, Australia
| | - Nathan S Hart
- School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Oceans Institute, The University of Western Australia, Perth, Western Australia, Australia.,Department of Biological Sciences, Macquarie University, North Ryde, New South Wales, Australia
| | - Ian C Potter
- Centre for Sustainable Aquatic Ecosystems, Murdoch University, Perth, Western Australia, Australia
| | - Shaun P Collin
- School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Oceans Institute, The University of Western Australia, Perth, Western Australia, Australia.,Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Perth, Western Australia, Australia.,School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - David M Hunt
- School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Perth, Western Australia, Australia
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7
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Warrington RE, Hart NS, Potter IC, Collin SP, Hemmi JM. Retinal temporal resolution and contrast sensitivity in the parasitic lamprey Mordacia mordax and its non-parasitic derivative Mordacia praecox. J Exp Biol 2017; 220:1245-1255. [PMID: 28108670 DOI: 10.1242/jeb.150383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/11/2017] [Indexed: 11/20/2022]
Abstract
Lampreys and hagfishes are the sole extant representatives of the early agnathan (jawless) vertebrates. We compared retinal function of fully metamorphosed, immature Mordacia mordax (which are about to commence parasitic feeding) with those of sexually mature individuals of its non-parasitic derivative Mpraecox We focused on elucidating the retinal adaptations to dim-light environments in these nocturnally active lampreys, using electroretinography to determine the temporal resolution (flicker fusion frequency, FFF) and temporal contrast sensitivity of enucleated eyecups at different temperatures and light intensities. FFF was significantly affected by temperature and light intensity. Critical flicker fusion frequency (cFFF, the highest FFF recorded) of M. praecox and M. mordax increased from 15.1 and 21.8 Hz at 9°C to 31.1 and 36.9 Hz at 24°C, respectively. Contrast sensitivity of both species increased by an order of magnitude between 9 and 24°C, but remained comparatively constant across all light intensities. Although FFF values for Mordacia spp. are relatively low, retinal responses showed a particularly high contrast sensitivity of 625 in M. praecox and 710 in M. mordax at 24°C. This suggests selective pressures favour low temporal resolution and high contrast sensitivity in both species, thereby enhancing the capture of photons and increasing sensitivity in their light-limited environments. FFF indicated all retinal photoreceptors exhibit the same temporal response. Although the slow response kinetics (i.e. low FFF) and saturation of the response at bright light intensities characterise the photoreceptors of both species as rod-like, it is unusual for such a photoreceptor to be functional under scotopic and photopic conditions.
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Affiliation(s)
- Rachael E Warrington
- School of Biological Sciences (M092), The University of Western Australia, Crawley, WA 6009, Australia .,UWA Oceans Institute, The University of Western Australia, Crawley, WA 6009, Australia
| | - Nathan S Hart
- Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia
| | - Ian C Potter
- Centre for Fish, Fisheries and Aquatic Ecosystems Research, School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA 6150, Australia
| | - Shaun P Collin
- School of Biological Sciences (M092), The University of Western Australia, Crawley, WA 6009, Australia.,UWA Oceans Institute, The University of Western Australia, Crawley, WA 6009, Australia
| | - Jan M Hemmi
- School of Biological Sciences (M092), The University of Western Australia, Crawley, WA 6009, Australia.,UWA Oceans Institute, The University of Western Australia, Crawley, WA 6009, Australia
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8
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Markov GV, Gutierrez-Mazariegos J, Pitrat D, Billas IML, Bonneton F, Moras D, Hasserodt J, Lecointre G, Laudet V. Origin of an ancient hormone/receptor couple revealed by resurrection of an ancestral estrogen. SCIENCE ADVANCES 2017; 3:e1601778. [PMID: 28435861 PMCID: PMC5375646 DOI: 10.1126/sciadv.1601778] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 02/10/2017] [Indexed: 05/11/2023]
Abstract
The origin of ancient ligand/receptor couples is often analyzed via reconstruction of ancient receptors and, when ligands are products of metabolic pathways, they are not supposed to evolve. However, because metabolic pathways are inherited by descent with modification, their structure can be compared using cladistic analysis. Using this approach, we studied the evolution of steroid hormones. We show that side-chain cleavage is common to most vertebrate steroids, whereas aromatization was co-opted for estrogen synthesis from a more ancient pathway. The ancestral products of aromatic activity were aromatized steroids with a side chain, which we named "paraestrols." We synthesized paraestrol A and show that it effectively binds and activates the ancestral steroid receptor. Our study opens the way to comparative studies of biologically active small molecules.
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Affiliation(s)
- Gabriel V. Markov
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, Institut National de la Recherche Agronomique (INRA), École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
- Evolution des Régulations Endocriniennes, Département Régulations, Développement et Diversité Moléculaire, CNRS UMR 7221, Sorbonne Universités, Muséum National d’Histoire Naturelle (MNHN), Paris, France
| | - Juliana Gutierrez-Mazariegos
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, Institut National de la Recherche Agronomique (INRA), École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
| | - Delphine Pitrat
- Laboratoire de Chimie, Université de Lyon, Université Lyon 1, CNRS UMR 5182, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
| | - Isabelle M. L. Billas
- Centre for Integrative Biology, Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, Illkirch, France
- CNRS UMR 7104, Illkirch, France
- INSERM U964, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - François Bonneton
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, Institut National de la Recherche Agronomique (INRA), École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
| | - Dino Moras
- Centre for Integrative Biology, Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, Illkirch, France
- CNRS UMR 7104, Illkirch, France
- INSERM U964, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Jens Hasserodt
- Laboratoire de Chimie, Université de Lyon, Université Lyon 1, CNRS UMR 5182, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
| | - Guillaume Lecointre
- Département Systématique et Evolution, Institut de Systématique, Évolution, Biodiversité, UMR 7205, CNRS–MNHN–Université Pierre et Marie Curie (UPMC)–École Pratique des Hautes Études (EPHE), Sorbonne Universités, Muséum National d’Histoire Naturelle, CP 30, 57 rue Cuvier, 75005 Paris, France
| | - Vincent Laudet
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, Institut National de la Recherche Agronomique (INRA), École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
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9
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Grier HJ, Uribe MC, Lo Nostro FL, Mims SD, Parenti LR. Conserved form and function of the germinal epithelium through 500 million years of vertebrate evolution. J Morphol 2016; 277:1014-44. [DOI: 10.1002/jmor.20554] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 02/18/2016] [Accepted: 03/18/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Harry J. Grier
- Fish and Wildlife Research Institute; St. Petersburg Florida
- Department of Vertebrate Zoology; Division of Fishes; National Museum of Natural History, MRC 159, Smithsonian Institution; Washington DC
| | - Mari Carmen Uribe
- Laboratorio Biología de la Reproducción, Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México; Ciudad de México 04510 México
| | - Fabiana L. Lo Nostro
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires & Instituto de Biodiversidad y Biología Experimental y Aplicada, CONICET-UBA, C1428EGA Buenos Aires; Argentina
| | - Steven D. Mims
- Aquaculture Research Center. Kentucky State University; Frankfort KY 40601
| | - Lynne R. Parenti
- Department of Vertebrate Zoology; Division of Fishes; National Museum of Natural History, MRC 159, Smithsonian Institution; Washington DC
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10
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Zaccone D, Icardo JM, Kuciel M, Alesci A, Pergolizzi S, Satora L, Lauriano ER, Zaccone G. Polymorphous granular cells in the lung of the primitive fish, the bichirPolypterus senegalus. ACTA ZOOL-STOCKHOLM 2015. [DOI: 10.1111/azo.12145] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniele Zaccone
- Department of Environmental Sciences, Territorial, Food and Health Security (S.A.S.T.A.S.); University of Messina; Viale Stagno d'Alcontres 31 I-98166 Messina Italy
| | - Jose Manuel Icardo
- Department of Anatomy and Cell Biology Polígono de Cazoña; Faculty of Medicine; University of Cantabria; s/n 39011 Santander Spain
| | - Michał Kuciel
- Poison Information Centre; Jagiellonian University Medical College; Kopernika 15 31-501 Crakow Poland
| | - Alessio Alesci
- Department of Environmental Sciences, Territorial, Food and Health Security (S.A.S.T.A.S.); University of Messina; Viale Stagno d'Alcontres 31 I-98166 Messina Italy
| | - Simona Pergolizzi
- Department of Environmental Sciences, Territorial, Food and Health Security (S.A.S.T.A.S.); University of Messina; Viale Stagno d'Alcontres 31 I-98166 Messina Italy
| | - Leszek Satora
- Department of Physiology and Reproduction of Animals; University of Rzeszow; Werynia 502 36-100 Kolbuszowa Rzeszow Poland
| | - Eugenia Rita Lauriano
- Department of Environmental Sciences, Territorial, Food and Health Security (S.A.S.T.A.S.); University of Messina; Viale Stagno d'Alcontres 31 I-98166 Messina Italy
| | - Giacomo Zaccone
- Department of Environmental Sciences, Territorial, Food and Health Security (S.A.S.T.A.S.); University of Messina; Viale Stagno d'Alcontres 31 I-98166 Messina Italy
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11
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Hagfish: Champions of CO2 tolerance question the origins of vertebrate gill function. Sci Rep 2015; 5:11182. [PMID: 26057989 PMCID: PMC4460890 DOI: 10.1038/srep11182] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 04/07/2015] [Indexed: 11/30/2022] Open
Abstract
The gill is widely accepted to have played a key role in the adaptive radiation of early vertebrates by supplanting the skin as the dominant site of gas exchange. However, in the most basal extant craniates, the hagfishes, gills play only a minor role in gas exchange. In contrast, we found hagfish gills to be associated with a tremendous capacity for acid-base regulation. Indeed, Pacific hagfish exposed acutely to severe sustained hypercarbia tolerated among the most severe blood acidoses ever reported (1.2 pH unit reduction) and subsequently exhibited the greatest degree of acid-base compensation ever observed in an aquatic chordate. This was accomplished through an unprecedented increase in plasma [HCO3−] (>75 mM) in exchange for [Cl−]. We thus propose that the first physiological function of the ancestral gill was acid-base regulation, and that the gill was later co-opted for its central role in gas exchange in more derived aquatic vertebrates.
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12
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Romano C, Koot MB, Kogan I, Brayard A, Minikh AV, Brinkmann W, Bucher H, Kriwet J. Permian-Triassic Osteichthyes (bony fishes): diversity dynamics and body size evolution. Biol Rev Camb Philos Soc 2014; 91:106-47. [PMID: 25431138 DOI: 10.1111/brv.12161] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 10/14/2014] [Accepted: 10/22/2014] [Indexed: 12/01/2022]
Abstract
The Permian and Triassic were key time intervals in the history of life on Earth. Both periods are marked by a series of biotic crises including the most catastrophic of such events, the end-Permian mass extinction, which eventually led to a major turnover from typical Palaeozoic faunas and floras to those that are emblematic for the Mesozoic and Cenozoic. Here we review patterns in Permian-Triassic bony fishes, a group whose evolutionary dynamics are understudied. Based on data from primary literature, we analyse changes in their taxonomic diversity and body size (as a proxy for trophic position) and explore their response to Permian-Triassic events. Diversity and body size are investigated separately for different groups of Osteichthyes (Dipnoi, Actinistia, 'Palaeopterygii', 'Subholostei', Holostei, Teleosteomorpha), within the marine and freshwater realms and on a global scale (total diversity) as well as across palaeolatitudinal belts. Diversity is also measured for different palaeogeographical provinces. Our results suggest a general trend from low osteichthyan diversity in the Permian to higher levels in the Triassic. Diversity dynamics in the Permian are marked by a decline in freshwater taxa during the Cisuralian. An extinction event during the end-Guadalupian crisis is not evident from our data, but 'palaeopterygians' experienced a significant body size increase across the Guadalupian-Lopingian boundary and these fishes upheld their position as large, top predators from the Late Permian to the Late Triassic. Elevated turnover rates are documented at the Permian-Triassic boundary, and two distinct diversification events are noted in the wake of this biotic crisis, a first one during the Early Triassic (dipnoans, actinistians, 'palaeopterygians', 'subholosteans') and a second one during the Middle Triassic ('subholosteans', neopterygians). The origination of new, small taxa predominantly among these groups during the Middle Triassic event caused a significant reduction in osteichthyan body size. Neopterygii, the clade that encompasses the vast majority of extant fishes, underwent another diversification phase in the Late Triassic. The Triassic radiation of Osteichthyes, predominantly of Actinopterygii, which only occurred after severe extinctions among Chondrichthyes during the Middle-Late Permian, resulted in a profound change within global fish communities, from chondrichthyan-rich faunas of the Permo-Carboniferous to typical Mesozoic and Cenozoic associations dominated by actinopterygians. This turnover was not sudden but followed a stepwise pattern, with leaps during extinction events.
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Affiliation(s)
- Carlo Romano
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland
| | - Martha B Koot
- School of Geography, Earth and Environmental Sciences (Faculty of Science and Technology), Plymouth University, Fitzroy Building, Drake Circus, Plymouth, Devon, PL4 8AA, U.K
| | - Ilja Kogan
- Department of Palaeontology, Geological Institute, TU Bergakademie Freiberg, Bernhard-von-Cotta-Strasse 2, 09596, Freiberg, Germany
| | - Arnaud Brayard
- UMR CNRS 6282 Biogéosciences, Université de Bourgogne, 6 Boulevard Gabriel, F-21000, Dijon, France
| | - Alla V Minikh
- Department of Historic Geology and Palaeontology, Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
| | - Winand Brinkmann
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland
| | - Hugo Bucher
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland.,Department of Earth Sciences, ETH Zurich, Sonneggstrasse 5, 8092, Zurich, Switzerland
| | - Jürgen Kriwet
- Department of Palaeontology, University of Vienna, Geozentrum, Althanstrasse 14, 1090, Vienna, Austria
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13
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Lefevre S, Bayley M, McKenzie DJ, Craig JF. Air-breathing fishes. JOURNAL OF FISH BIOLOGY 2014; 84:547-553. [PMID: 24588640 DOI: 10.1111/jfb.12349] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- S Lefevre
- Department of Biosciences, University of Oslo, 0316, Oslo, Norway
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14
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Lefevre S, Domenici P, McKenzie DJ. Swimming in air-breathing fishes. JOURNAL OF FISH BIOLOGY 2014; 84:661-681. [PMID: 24502687 DOI: 10.1111/jfb.12308] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 11/15/2013] [Indexed: 06/03/2023]
Abstract
Fishes with bimodal respiration differ in the extent of their reliance on air breathing to support aerobic metabolism, which is reflected in their lifestyles and ecologies. Many freshwater species undertake seasonal and reproductive migrations that presumably involve sustained aerobic exercise. In the six species studied to date, aerobic exercise in swim flumes stimulated air-breathing behaviour, and there is evidence that surfacing frequency and oxygen uptake from air show an exponential increase with increasing swimming speed. In some species, this was associated with an increase in the proportion of aerobic metabolism met by aerial respiration, while in others the proportion remained relatively constant. The ecological significance of anaerobic swimming activities, such as sprinting and fast-start manoeuvres during predator-prey interactions, has been little studied in air-breathing fishes. Some species practise air breathing during recovery itself, while others prefer to increase aquatic respiration, possibly to promote branchial ion exchange to restore acid-base balance, and to remain quiescent and avoid being visible to predators. Overall, the diversity of air-breathing fishes is reflected in their swimming physiology as well, and further research is needed to increase the understanding of the differences and the mechanisms through which air breathing is controlled and used during exercise.
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Affiliation(s)
- S Lefevre
- Department of Biosciences, The Faculty of Mathematics and Natural Sciences, University of Oslo, P. O. Box 1066, 0316 Oslo, Norway
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15
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Green SA, Bronner ME. The lamprey: a jawless vertebrate model system for examining origin of the neural crest and other vertebrate traits. Differentiation 2014; 87:44-51. [PMID: 24560767 PMCID: PMC3995830 DOI: 10.1016/j.diff.2014.02.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 01/26/2014] [Accepted: 02/04/2014] [Indexed: 11/15/2022]
Abstract
Lampreys are a group of jawless fishes that serve as an important point of comparison for studies of vertebrate evolution. Lampreys and hagfishes are agnathan fishes, the cyclostomes, which sit at a crucial phylogenetic position as the only living sister group of the jawed vertebrates. Comparisons between cyclostomes and jawed vertebrates can help identify shared derived (i.e. synapomorphic) traits that might have been inherited from ancestral early vertebrates, if unlikely to have arisen convergently by chance. One example of a uniquely vertebrate trait is the neural crest, an embryonic tissue that produces many cell types crucial to vertebrate features, such as the craniofacial skeleton, pigmentation of the skin, and much of the peripheral nervous system (Gans and Northcutt, 1983). Invertebrate chordates arguably lack unambiguous neural crest homologs, yet have cells with some similarities, making comparisons with lampreys and jawed vertebrates essential for inferring characteristics of development in early vertebrates, and how they may have evolved from nonvertebrate chordates. Here we review recent research on cyclostome neural crest development, including research on lamprey gene regulatory networks and differentiated neural crest fates.
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Affiliation(s)
- Stephen A Green
- California Institute of Technology, 1200 E. California Ave., Pasadena, CA 91125, USA
| | - Marianne E Bronner
- California Institute of Technology, 1200 E. California Ave., Pasadena, CA 91125, USA.
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16
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17
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Abstract
Olfactory receptors are a specialized set of receptor cells responsible for the detection of odors. These cells are G protein-coupled receptors and expressed in the cell membranes of olfactory sensory neurons. Once a cell is activated by a ligand, it initiates a signal transduction cascade that produces a nerve impulse to the brain where odor perception is processed. Vertebrate olfactory evolution is characterized by birth-and-death events, a special case of the stochastic continuous time Markov process. Vertebrate fish have three general types of receptor cells (two dedicated to pheromones). Terrestrial animals have different epithelial biology due to the specialized adaptation to detecting airborne odors. Two general classes of olfactory receptor gene reflect the vertebrate marine heritage (Class I) and the derived amphibian, reptile, and mammal terrestrial heritage (Class II). While we know much about olfactory receptor cells, there are still areas where our knowledge is insufficient, such as intra-individual diversity throughout the life time, epigenetic processes acting on olfactory receptors, and association of ligands to specific cells.
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18
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Gustafsson OSE, Ekström P, Kröger RHH. Sturgeons, sharks, and rays have multifocal crystalline lenses and similar lens suspension apparatuses. J Morphol 2012; 273:746-53. [PMID: 22467468 DOI: 10.1002/jmor.20020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 01/20/2012] [Accepted: 02/18/2012] [Indexed: 11/10/2022]
Abstract
Crystalline lenses with multiple focal lengths in monochromatic light (multifocal lenses) are present in many vertebrate groups. These lenses compensate for chromatic aberration and create well-focused color images. Stabilization of the lens within the eye and the ability to adjust focus are further requirements for vision in high detail. We investigated the occurrence of multifocal lenses by photorefractometry and lens suspension structures by light and electron microscopy in sturgeons (Acipenseriformes, Chondrostei) as well as sharks and rays (Elasmobranchii, Chondrichthyes). Multifocal lenses were found in two more major vertebrate groups, the Chondrostei represented by Acipenseriformes and Chondrichthyes represented by Elasmobranchii. The lens suspension structures of sturgeons, sharks, and rays are more complex than described previously. The lens is suspended by many delicate suspensory fibers in association with a ventral papilla in all groups studied. The arrangements of the suspensory fibers are most similar between sturgeons and sharks. In rays, the lens is suspended by a smaller ventral papilla and the suspensory fibers are arranged more concentrically to the lens.
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Affiliation(s)
- Ola S E Gustafsson
- Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden.
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19
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Hoover KC. Smell with inspiration: The evolutionary significance of olfaction. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 143 Suppl 51:63-74. [DOI: 10.1002/ajpa.21441] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Vickaryous MK, Sire JY. The integumentary skeleton of tetrapods: origin, evolution, and development. J Anat 2010; 214:441-64. [PMID: 19422424 DOI: 10.1111/j.1469-7580.2008.01043.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Although often overlooked, the integument of many tetrapods is reinforced by a morphologically and structurally diverse assemblage of skeletal elements. These elements are widely understood to be derivatives of the once all-encompassing dermal skeleton of stem-gnathostomes but most details of their evolution and development remain confused and uncertain. Herein we re-evaluate the tetrapod integumentary skeleton by integrating comparative developmental and tissue structure data. Three types of tetrapod integumentary elements are recognized: (1) osteoderms, common to representatives of most major taxonomic lineages; (2) dermal scales, unique to gymnophionans; and (3) the lamina calcarea, an enigmatic tissue found only in some anurans. As presently understood, all are derivatives of the ancestral cosmoid scale and all originate from scleroblastic neural crest cells. Osteoderms are plesiomorphic for tetrapods but demonstrate considerable lineage-specific variability in size, shape, and tissue structure and composition. While metaplastic ossification often plays a role in osteoderm development, it is not the exclusive mode of skeletogenesis. All osteoderms share a common origin within the dermis (at or adjacent to the stratum superficiale) and are composed primarily (but not exclusively) of osseous tissue. These data support the notion that all osteoderms are derivatives of a neural crest-derived osteogenic cell population (with possible matrix contributions from the overlying epidermis) and share a deep homology associated with the skeletogenic competence of the dermis. Gymnophionan dermal scales are structurally similar to the elasmoid scales of most teleosts and are not comparable with osteoderms. Whereas details of development are lacking, it is hypothesized that dermal scales are derivatives of an odontogenic neural crest cell population and that skeletogenesis is comparable with the formation of elasmoid scales. Little is known about the lamina calcarea. It is proposed that this tissue layer is also odontogenic in origin, but clearly further study is necessary. Although not homologous as organs, all elements of the integumentary skeleton share a basic and essential relationship with the integument, connecting them with the ancestral rhombic scale.
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Affiliation(s)
- Matthew K Vickaryous
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Canada.
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21
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Near TJ. Conflict and resolution between phylogenies inferred from molecular and phenotypic data sets for hagfish, lampreys, and gnathostomes. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2009; 312:749-61. [PMID: 19402130 DOI: 10.1002/jez.b.21293] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
One of the most problematic issues in vertebrate phylogenetics is the disagreement between phenotypic and molecular inferences regarding the relationships among hagfishes, lampreys, and gnathostomes. Phenotypic characters support monophyly of lampreys and gnathostomes, whereas nearly all published analyses of molecular data sets support monophyly of hagfishes and lampreys. In this study I present results of phylogenetic analyses of combined phenotypic and molecular data sets that focus on relationships among hagfishes, lampreys, and gnathostomes. Maximum parsimony analyses of 115 phenotypic characters combined with 4,638 rRNA sites and more than 10,000 amino acids each result in monophyly of lampreys and gnathostomes, demonstrating that the addition of relatively few phenotypic characters can alter phylogenetic inferences from large molecular data sets. On the other hand, Bayesian analyses of the combined data sets support monophyly of hagfish and lampreys, indicating that model-based analyses may be prone to data "swamping," where the phylogenetic signal of the larger molecular data sets overwhelm the signal present in the much smaller phenotypic data set. Nodes that relate hagfish and lampreys were recovered at a low frequency in parametric bootstrapping analyses, indicating that the timing of diversification among hagfishes, lampreys, and gnathostomes has created a difficult phylogenetic problem for molecular data. The fact that addition of relatively few phenotypic characters can alter phylogenetic inferences of cyclostome monophyly obtained from molecular data sets, and the inability of simulated data sets to recover key nodes in the craniate phylogeny provide reasons to view the strong support for cyclostome monophyly inferred from molecular data sets with a measured degree of skepticism.
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Affiliation(s)
- Thomas J Near
- Department of Ecology and Evolutionary Biology and Peabody Museum of Natural History, Yale University, New Haven, Connecticut 06520, USA.
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Baker DW, Matey V, Huynh KT, Wilson JM, Morgan JD, Brauner CJ. Complete intracellular pH protection during extracellular pH depression is associated with hypercarbia tolerance in white sturgeon, Acipenser transmontanus. Am J Physiol Regul Integr Comp Physiol 2009; 296:R1868-80. [PMID: 19339675 DOI: 10.1152/ajpregu.90767.2008] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sturgeons are among the most CO2 tolerant of fishes investigated to date. However, the basis of this exceptional CO2 tolerance is unknown. Here, white sturgeon, Acipenser transmontanus, were exposed to elevated CO2 to investigate the mechanisms associated with short-term hypercarbia tolerance. During exposure to 1.5 kPa Pco2, transient blood pH [extracellular pH (pHe)] depression was compensated within 24 h and associated with net plasma HCO3- accumulation and equimolar Cl- loss, and changes in gill morphology, such as a decrease in apical surface area of mitochondrial-rich cells. These findings indicate that pHe recovery at this level of hypercarbia is accomplished in a manner similar to most freshwater teleost species studied to date, although branchial mechanisms involved may differ. White sturgeon exposed to more severe hypercarbia (3 and 6 kPa Pco2) for 48 h exhibited incomplete pH compensation in blood and red blood cells. Despite pHe depression, intracellular pH (pHi) of white muscle, heart, brain, and liver did not decrease during a transient (6 h of 1.5 kPa Pco2) or prolonged (48 h at 3 and 6 kPa Pco2 blood acidosis. This pHi protection was not due to high intrinsic buffering in tissues. Such tight active cellular regulation of pHi in the absence of pHe compensation represents a unique pattern for non-air-breathing fishes, and we hypothesize that it is the basis for the exceptional CO2 tolerance of white sturgeon and, likely, other CO2 tolerant fishes. Further research to elucidate the specific mechanisms responsible for this tremendous pH regulatory capacity in tissues of white sturgeon is warranted.
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Affiliation(s)
- D W Baker
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
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