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Vieira LS, Vaz DFB, Netto-Ferreira AL. Ontogeny of the swim bladder of the Plainfin Midshipman, Porichthys notatus (Percomorphacea: Batrachoidiformes). ZOOLOGY 2023; 159:126102. [PMID: 37364349 DOI: 10.1016/j.zool.2023.126102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/28/2023]
Abstract
The batracoidid Plainfin Midshipmen Porichthys notatus Girard has been extensively studied due to the sound production abilities and specializations of its swim bladder. The present study describes three-dimensional variations of the morphology of the swim bladder and sonic muscles of P. notatus during its post-hatch larval development, with the use of three-dimensional computed tomography. This study also includes descriptions of the relative position of the swim bladder to other visceral organs. The swim bladder, digestive tract, and liver were already present in the smallest examined specimens (5.9 mm; newly hatched larvae) along with the yolk sac. In the smallest specimens, the digestive tract is straight, but from 7.1 mm TL, the digestive tract forms the first intestinal loops, and at 25.5 mm TL, a second intestinal loop. In smallest specimens, the swim bladder is oval, but at 7.1 mm TL, the anterior margin starts invaginating, forming a pair of anterior lobes. The first appearance of the intrinsic sonic muscles in swim bladder occurs at 13.1 mm TL. Additionally, we provide comparisons between the shape of the swim bladder of P. notatus and other species. The shape of the swim bladder of P. notatus and other members of Porichthyinae have an ovoid posterior region with two anterior lobes and differs from the cordiform or semiconected/bilobed the swim bladders observed in the other Batrachoididae.
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Affiliation(s)
- Lorena S Vieira
- Laboratório de Ictiologia, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul., Av. Bento Gonçalves 9500, Porto Alegre, RS, Brazil.
| | - Diego F B Vaz
- Museum of Comparative Zoology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, United States; Guam Ecosystems Collaboratorium Biorepository, Guam EPSCoR, University of Guam. 303 University Drive, UOG Station, Mangilao, Guam 96923, United States
| | - Andre L Netto-Ferreira
- Laboratório de Ictiologia, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul., Av. Bento Gonçalves 9500, Porto Alegre, RS, Brazil
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Argyriou T, Giles S, Friedman M. A Permian fish reveals widespread distribution of neopterygian-like jaw suspension. eLife 2022; 11:58433. [PMID: 35579418 PMCID: PMC9345605 DOI: 10.7554/elife.58433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 05/15/2022] [Indexed: 11/13/2022] Open
Abstract
The actinopterygian crown group (comprising all living ray-finned fishes) originated by the end of the Carboniferous. However, most late Paleozoic taxa are stem actinopterygians, and broadly resemble stratigraphically older taxa. The early Permian †Brachydegma caelatum is notable for its three-dimensional preservation and past phylogenetic interpretations as a nested member of the neopterygian crown. Here, we use computed microtomography to redescribe †Brachydegma, uncovering an unanticipated combination of primitive (e.g., aortic canal; immobile maxilla) and derived (e.g., differentiated occipital ossifications; posterior stem of parasphenoid; two accessory hyoidean ossifications; double jaw joint) dermal and endoskeletal features relative to most other Paleozoic actinopterygians. Some of these features were previously thought to be restricted to the neopterygian crown. The precise phylogenetic position of †Brachydegma is unclear, with placements either on the polypterid stem, or as an early-diverging stem neopterygian. However, our analyses decisively reject previous placements of †Brachydegma in the neopterygian crown. Critically, we demonstrate that key-endoskeletal components of the hyoid portion of the suspensorium of crown neopterygians appeared deeper in the tree than previously thought.
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Affiliation(s)
| | - Sam Giles
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Matt Friedman
- Museum of Paleontology, Department of Earth and Environmental Sciences, University of Michigan-Ann Arbor, Ann Arbor, United States
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3
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Stundl J, Pospisilova A, Matějková T, Psenicka M, Bronner ME, Cerny R. Migratory patterns and evolutionary plasticity of cranial neural crest cells in ray-finned fishes. Dev Biol 2020; 467:14-29. [PMID: 32835652 DOI: 10.1016/j.ydbio.2020.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023]
Abstract
The cranial neural crest (CNC) arises within the developing central nervous system, but then migrates away from the neural tube in three consecutive streams termed mandibular, hyoid and branchial, respectively, according to the order along the anteroposterior axis. While the process of neural crest emigration generally follows a conserved anterior to posterior sequence across vertebrates, we find that ray-finned fishes (bichir, sterlet, gar, and pike) exhibit several heterochronies in the timing and order of CNC emergence that influences their subsequent migratory patterns. First, emigration of the cranial neural crest in these fishes occurs prematurely compared to other vertebrates, already initiating during early neurulation and well before neural tube closure. Second, delamination of the hyoid stream occurs prior to the more anterior mandibular stream; this is associated with early morphogenesis of key hyoid structures like external gills (bichir), a large opercular flap (gar) or first forming cartilage (pike). In sterlet, the hyoid and branchial CNC cells form a single hyobranchial sheet, which later segregates in concert with second pharyngeal pouch morphogenesis. Taken together, the results show that despite generally conserved migratory patterns, heterochronic alterations in the timing of emigration and pattern of migration of CNC cells accompanies morphological diversity of ray-finned fishes.
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Affiliation(s)
- Jan Stundl
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA; South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Vodnany, Czech Republic.
| | - Anna Pospisilova
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Tereza Matějková
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Martin Psenicka
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Vodnany, Czech Republic
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Robert Cerny
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic.
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Diogo R, Siomava N, Gitton Y. Development of human limb muscles based on whole-mount immunostaining and the links between ontogeny and evolution. Development 2019; 146:146/20/dev180349. [PMID: 31575609 DOI: 10.1242/dev.180349] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 06/04/2019] [Indexed: 12/28/2022]
Abstract
We provide the first detailed ontogenetic analysis of human limb muscles using whole-mount immunostaining. We compare our observations with the few earlier studies that have focused on the development of these muscles, and with data available on limb evolution, variations and pathologies. Our study confirms the transient presence of several atavistic muscles - present in our ancestors but normally absent from the adult human - during normal embryonic human development, and reveals the existence of others not previously described in human embryos. These atavistic muscles are found both as rare variations in the adult population and as anomalies in human congenital malformations, reinforcing the idea that such variations/anomalies can be related to delayed or arrested development. We further show that there is a striking difference in the developmental order of muscle appearance in the upper versus lower limbs, reinforcing the idea that the similarity between various distal upper versus lower limb muscles of tetrapod adults may be derived.
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Affiliation(s)
- Rui Diogo
- Department of Anatomy, Howard University College of Medicine, Washington, DC 20059, USA
| | - Natalia Siomava
- Department of Anatomy, Howard University College of Medicine, Washington, DC 20059, USA
| | - Yorick Gitton
- Sorbonne Universites, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 Rue Moreau, 75012 Paris, France
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Lemberg JB, Shubin NH, Westneat MW. Feeding kinematics and morphology of the alligator gar (Atractosteus spatula, Lacépède, 1803). J Morphol 2019; 280:1548-1570. [PMID: 31385619 DOI: 10.1002/jmor.21048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 06/28/2019] [Accepted: 07/12/2019] [Indexed: 11/12/2022]
Abstract
Living gars are a small clade of seven species that occupy an important position on the actinopterygian phylogenetic tree as members of Holostei, sister-group to teleosts, and exhibit many plesiomorphic traits used to interpret and reconstruct early osteichthyan feeding mechanisms. Previous studies of gar feeding kinematics have focused on the ram-based, lateral-snapping mode of prey capture found in the narrow-snouted Lepisosteus genus, whereas this study focuses on a member of the broad-snouted Atractosteus sister-genus, the alligator gar (Atractosteus spatula, Lacépède, 1803). High-speed videography reveals that the feeding system of alligator gars is capable of rapid expansion from anterior to posterior, timed in a way to generate suction, counteract the effects of a bow-wave during ram-feeding, and direct a unidirectional flow of water through the feeding system. Reconstructed contrast-enhanced μCT-based cranial anatomy and three-dimensional modeling of linkage mechanics show that a lateral-sliding palatoquadrate, flexible intrasuspensorial joint, pivoting interhyal, and retractable pectoral girdle increase the range of motion and expansive capabilities of the alligator gar feeding mechanism. Reconstructions of muscular anatomy, inferences from in vivo kinematics, and in situ manipulations show that input from the hyoid constrictors and hypaxials play an important role in decoupling and modulating the dual roles of the sternohyoideus during feeding: hyoid retraction (jaw opening) and hyoid rotation (pharyngeal expansion). The alligator gar possesses an intricate feeding mechanism, capable of precise control with plesiomorphic muscles that represent one of the many ways the ancestral osteichthyan feeding mechanism has been modified for prey capture.
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Affiliation(s)
- Justin B Lemberg
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, Illinois
| | - Neil H Shubin
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, Illinois
| | - Mark W Westneat
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, Illinois
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6
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Hilton EJ, Warth P, Konstantinidis P. The morphology, development, and evolution of the head of fishes: Foundational studies for a renaissance of comparative morphology. ACTA ZOOL-STOCKHOLM 2019. [DOI: 10.1111/azo.12299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eric J. Hilton
- Virginia Institute of Marine Science William & Mary Gloucester Point Virginia
| | - Peter Warth
- Institut für Zoologie und Evolutionsforschung Friedrich‐Schiller‐Universität Jena Jena Germany
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Datovo A, Rizzato PP. Evolution of the facial musculature in basal ray-finned fishes. Front Zool 2018; 15:40. [PMID: 30386405 PMCID: PMC6202829 DOI: 10.1186/s12983-018-0285-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/27/2018] [Indexed: 12/11/2022] Open
Abstract
Background The facial musculature is a remarkable anatomical complex involved in vital activities of fishes, such as food capture and gill ventilation. The evolution of the facial muscles is largely unknown in most major fish lineages, such as the Actinopterygii. This megadiverse group includes all ray-finned fishes and comprises approximately half of the living vertebrate species. The Polypteriformes, Acipenseriformes, Lepisosteiformes, Amiiformes, Elopiformes, and Hiodontiformes occupy basal positions in the actinopterygian phylogeny and a comparative study of their facial musculature is crucial for understanding the cranial evolution of bony fishes (Osteichthyes) as a whole. Results The facial musculature of basal actinopterygians is revised, redescribed, and analyzed under an evolutionary perspective. We identified twenty main muscle components ontogenetically and evolutionarily derived from three primordial muscles. Homologies of these components are clarified and serve as basis for the proposition of a standardized and unifying myological terminology for all ray-finned fishes. The evolutionary changes in the facial musculature are optimized on the osteichthyan tree and several new synapomorphies are identified for its largest clades, including the Actinopterygii, Neopterygii, and Teleostei. Myological data alone ambiguously support the monophyly of the Holostei. A newly identified specialization constitutes the first unequivocal morphological synapomorphy for the Elopiformes. The myological survey additionally allowed a reinterpretation of the homologies of ossifications in the upper jaw of acipenseriforms. Conclusions The facial musculature proved to be extremely informative for the higher-level phylogeny of bony fishes. These muscles have undergone remarkable changes during the early radiation of ray-finned fishes, with significant implications for the knowledge of the musculoskeletal evolution of both derived actinopterygians and lobe-finned fishes (Sarcopterygii).
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Affiliation(s)
- Aléssio Datovo
- 1Laboratório de Ictiologia, Museu de Zoologia da Universidade de São Paulo (MZUSP), Av. Nazaré, 481, São Paulo, 04263-000 SP Brazil
| | - Pedro P Rizzato
- 2Laboratório de Ictiologia de Ribeirão Preto (LIRP), FFCLRP, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901 Brazil
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Argyriou T, Giles S, Friedman M, Romano C, Kogan I, Sánchez-Villagra MR. Internal cranial anatomy of Early Triassic species of †Saurichthys (Actinopterygii: †Saurichthyiformes): implications for the phylogenetic placement of †saurichthyiforms. BMC Evol Biol 2018; 18:161. [PMID: 30382811 PMCID: PMC6211452 DOI: 10.1186/s12862-018-1264-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 09/25/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND †Saurichthyiformes were a successful group of latest Permian-Middle Jurassic predatory actinopterygian fishes and constituted important, widely-distributed components of Triassic marine and freshwater faunas. Their systematic affinities have long been debated, with †saurichthyiforms often being aligned with chondrosteans, a group today comprising sturgeons and paddlefishes. However, their character-rich endocranial anatomy has not been investigated in detail since the first half of the 20th century. Since then, major advances have occurred in terms of our understanding of early actinopterygian anatomy, as well as techniques for extracting morphological data from fossils. RESULTS We used μCT to study the internal cranial anatomy of two of the stratigraphically oldest representatives of †Saurichthys, from the Early Triassic of East Greenland and Nepal. Our work revealed numerous previously unknown characters (e.g., cryptic oticooccipital fissure; intramural diverticula of braincase; nasobasal canals; lateral cranial canal; fused dermohyal), and permitted the reevalution of features relating to the structure of cranial fossae, basicranial circulation and opercular anatomy of the genus. Critically, we reinterpret the former †saurichthyiform opercle as an expanded subopercle. For comparison, we also produced the first digital models of a braincase and endocast of a sturgeon (A. brevirostrum). New information from these taxa was included in a broad phylogenetic analysis of Actinopterygii. †Saurichthyiforms are resolved as close relatives of †Birgeria, forming a clade that constitutes the immediate sister group of crown actinopterygians. However, these and other divergences near the actinopterygian crown node are weakly supported. CONCLUSIONS Our phylogeny disagrees with the historically prevalent hypothesis favoring the chondrostean affinities of †saurichthyiforms. Previously-proposed synapomorphies uniting the two clades, such as the closure of the oticooccipital fissure, the posterior extension of the parasphenoid, and the absence of an opercular process, are all widespread amongst actinopterygians. Others, like those relating to basicranial circulation, are found to be based on erroneous interpretations. Our work renders the †saurichthyiform character complex adequately understood, and permits detailed comparisons with other stem and crown actinopterygians. Our phylogenetic scheme highlights outstanding questions concerning the affinity of many early actinopterygians, such as the Paleozoic-early Mesozoic deep-bodied forms, which are largely caused by lack of endoskeletal data.
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Affiliation(s)
- Thodoris Argyriou
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland.
| | - Sam Giles
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, UK
| | - Matt Friedman
- Museum of Paleontogy and Department of Earth and Environmental Sciences, University of Michigan, 1109 Geddes Ave, Ann Arbor, MI, 48109, USA
| | - Carlo Romano
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland
| | - Ilja Kogan
- Department of Palaeontology, TU Bergakademie Freiberg, Geological Institute, Bernhard-von-Cotta-Str. 2, 09599, Freiberg, Germany.,Kazan Federal University, 18 Kremlyovskaya, Kazan, 420008, Russia
| | - Marcelo R Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland
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Ziermann JM, Clement AM, Ericsson R, Olsson L. Cephalic muscle development in the Australian lungfish,Neoceratodus forsteri. J Morphol 2017; 279:494-516. [DOI: 10.1002/jmor.20784] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/29/2017] [Accepted: 11/20/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Janine M. Ziermann
- Department of Anatomy; Howard University College of Medicine; Washington DC 20059
| | - Alice M. Clement
- Department of Organismal Biology; Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A; Uppsala 752 36 Sweden
- School of Biological Sciences, College of Science and Engineering; Flinders University; Adelaide South Australia 5042 Australia
| | - Rolf Ericsson
- Laboratory for the Study of Craniofacial Evolution & Development, Vinicna 7; Charles University in Prague; Prague 128 44 Czech Republic
| | - Lennart Olsson
- Institut für Zoologie und Evolutionsforschung; Friedrich-Schiller-Universität Jena; Jena Germany
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Warth P, Hilton EJ, Naumann B, Olsson L, Konstantinidis P. Development of the muscles associated with the mandibular and hyoid arches in the Siberian sturgeon, Acipenser baerii (Acipenseriformes: Acipenseridae). J Morphol 2017; 279:163-175. [PMID: 29068071 DOI: 10.1002/jmor.20761] [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: 05/31/2017] [Revised: 09/24/2017] [Accepted: 09/29/2017] [Indexed: 01/10/2023]
Abstract
The skeleton of the jaws and neurocranium of sturgeons (Acipenseridae) are connected only through the hyoid arch. This arrangement allows considerable protrusion and retraction of the jaws and is highly specialized among ray-finned fishes (Actinopterygii). To better understand the unique morphology and the evolution of the jaw apparatus in Acipenseridae, we investigated the development of the muscles of the mandibular and hyoid arches of the Siberian sturgeon, Acipenser baerii. We used a combination of antibody staining and formalin-induced fluorescence of tissues imaged with confocal microscopy and subsequent three-dimensional reconstruction. These data were analyzed to address the identity of previously controversial and newly discovered muscle portions. Our results indicate that the anlagen of the muscles in A. baerii develop similarly to those of other actinopterygians, although they differ by not differentiating into distinct muscles. This is exemplified by the subpartitioning of the m. adductor mandibulae as well as the massive m. protractor hyomandibulae, for which we found a previously undescribed portion in each. The importance of paedomorphosis for the evolution of Acipenseriformes has been discussed before and our results indicate that the muscles of the mandibular and the hyoid may be another example for heterochronic evolution.
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Affiliation(s)
- Peter Warth
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena, Germany
| | - Eric J Hilton
- Department of Fisheries Science, Virginia Institute of Marine Science, College of William & Mary, Gloucester Point, Virginia
| | - Benjamin Naumann
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena, Germany
| | - Lennart Olsson
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena, Germany
| | - Peter Konstantinidis
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon
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Ziermann JM, Freitas R, Diogo R. Muscle development in the shark Scyliorhinus canicula: implications for the evolution of the gnathostome head and paired appendage musculature. Front Zool 2017; 14:31. [PMID: 28649268 PMCID: PMC5480186 DOI: 10.1186/s12983-017-0216-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/12/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The origin of jawed vertebrates was marked by profound reconfigurations of the skeleton and muscles of the head and by the acquisition of two sets of paired appendages. Extant cartilaginous fish retained numerous plesiomorphic characters of jawed vertebrates, which include several aspects of their musculature. Therefore, myogenic studies on sharks are essential in yielding clues on the developmental processes involved in the origin of the muscular anatomy. RESULTS Here we provide a detailed description of the development of specific muscular units integrating the cephalic and appendicular musculature of the shark model, Scyliorhinus canicula. In addition, we analyze the muscle development across gnathostomes by comparing the developmental onset of muscle groups in distinct taxa. Our data reveal that appendicular myogenesis occurs earlier in the pectoral than in the pelvic appendages. Additionally, the pectoral musculature includes muscles that have their primordial developmental origin in the head. This culminates in a tight muscular connection between the pectoral girdle and the cranium, which founds no parallel in the pelvic fins. Moreover, we identified a lateral to ventral pattern of formation of the cephalic muscles, that has been equally documented in osteichthyans but, in contrast with these gnathostomes, the hyoid muscles develop earlier than mandibular muscle in S. canicula. CONCLUSION Our analyses reveal considerable differences in the formation of the pectoral and pelvic musculatures in S. canicula, reinforcing the idea that head tissues have contributed to the formation of the pectoral appendages in the common ancestor of extant gnathostomes. In addition, temporal differences in the formation of some cranial muscles between chondrichthyans and osteichthyans might support the hypothesis that the similarity between the musculature of the mandibular arch and of the other pharyngeal arches represents a derived feature of jawed vertebrates.
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Affiliation(s)
- Janine M. Ziermann
- Department of Anatomy, Howard University College of Medicine, 520 W St NW, Washington, DC 20059 USA
| | - Renata Freitas
- IBMC—Institute for Molecular and Cell Biology, Oporto, Portugal
- I3S, Institute for Innovation and Health Research, University of Oporto, Oporto, Portugal
| | - Rui Diogo
- Department of Anatomy, Howard University College of Medicine, Washington, DC 20059 USA
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Scherrer R, Hurtado A, Garcia Machado E, Debiais-Thibaud M. MicroCT survey of larval skeletal mineralization in the Cuban gar Atractosteus tristoechus (Actinopterygii; Lepisosteiformes). ACTA ACUST UNITED AC 2017. [DOI: 10.18563/m3.3.3.e3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Warth P, Hilton EJ, Naumann B, Olsson L, Konstantinidis P. Development of the skull and pectoral girdle in Siberian sturgeon,Acipenser baerii, and Russian sturgeon,Acipenser gueldenstaedtii(Acipenseriformes: Acipenseridae). J Morphol 2017; 278:418-442. [DOI: 10.1002/jmor.20653] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/23/2016] [Accepted: 12/30/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Peter Warth
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena; Germany
| | - Eric J. Hilton
- Department of Fisheries Science; Virginia Institute of Marine Science, College of William & Mary; Gloucester Point Virginia
| | - Benjamin Naumann
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena; Germany
| | - Lennart Olsson
- Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena; Germany
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Hilton EJ, Schnell NK, Konstantinidis P. When Tradition Meets Technology: Systematic Morphology of Fishes in the Early 21stCentury. COPEIA 2015. [DOI: 10.1643/ci-14-178] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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