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Mansuit R, Clément G, Herrel A, Dutel H, Tafforeau P, Santin MD, Herbin M. Development and growth of the pectoral girdle and fin skeleton in the extant coelacanth Latimeria chalumnae. J Anat 2019; 236:493-509. [PMID: 31713843 DOI: 10.1111/joa.13115] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2019] [Indexed: 12/31/2022] Open
Abstract
The monobasal pectoral fins of living coelacanths and lungfishes are homologous to the forelimbs of tetrapods and are thus critical to investigate the origin thereof. However, it remains unclear whether the similarity in the asymmetrical endoskeletal arrangement of the pectoral fins of coelacanths reflects the evolution of the pectoral appendages in sarcopterygians. Here, we describe for the first time the development of the pectoral fin and shoulder girdle in the extant coelacanth Latimeria chalumnae, based on the tomographic acquisition of a growth series. The pectoral girdle and pectoral fin endoskeleton are formed early in development with a radially outward growth of the endoskeletal elements. The visualization of the pectoral girdle during development shows a reorientation of the girdle between the fetus and pup 1 stages, creating a contact between the scapulocoracoids and the clavicles in the ventro-medial region. Moreover, we observed a splitting of the pre- and post-axial cartilaginous plates in respectively pre-axial radials and accessory elements on one hand, and in post-axial accessory elements on the other hand. However, the mechanisms involved in the splitting of the cartilaginous plates appear different from those involved in the formation of radials in actinopterygians. Our results show a proportional reduction of the proximal pre-axial radial of the fin, rendering the external morphology of the fin more lobe-shaped, and a spatial reorganization of elements resulting from the fragmentation of the two cartilaginous plates. Latimeria development hence supports previous interpretations of the asymmetrical pectoral fin skeleton as being plesiomorphic for coelacanths and sarcopterygians.
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Affiliation(s)
- Rohan Mansuit
- UMR 7207 Centre de Recherche en Paléontologie, Paris, MNHN - Sorbonne Université - CNRS, Département Origines & Evolution, Muséum national d'Histoire naturelle, Paris, France.,UMR 7179 MECADEV, MNHN - CNRS, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Gaël Clément
- UMR 7207 Centre de Recherche en Paléontologie, Paris, MNHN - Sorbonne Université - CNRS, Département Origines & Evolution, Muséum national d'Histoire naturelle, Paris, France
| | - Anthony Herrel
- UMR 7179 MECADEV, MNHN - CNRS, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Hugo Dutel
- School of Earth Sciences, University of Bristol, Bristol, UK
| | - Paul Tafforeau
- European Synchrotron Radiation Facility, Grenoble Cedex, France
| | - Mathieu D Santin
- Inserm U 1127, CNRS UMR 7225, Centre for NeuroImaging Research, ICM (Brain & Spine Institute), Sorbonne University, Paris, France
| | - Marc Herbin
- UMR 7179 MECADEV, MNHN - CNRS, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Paris, France
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Vanscoy T, Lundberg JG, Luckenbill KR. Bony ornamentation of the catfish pectoral-fin spine: comparative and developmental anatomy, with an example of fin-spine diversity using the Tribe Brachyplatystomini (Siluriformes, Pimelodidae). PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA 2015. [DOI: 10.1635/053.164.0107] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Don EK, Currie PD, Cole NJ. The evolutionary history of the development of the pelvic fin/hindlimb. J Anat 2013; 222:114-33. [PMID: 22913749 PMCID: PMC3552419 DOI: 10.1111/j.1469-7580.2012.01557.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2012] [Indexed: 12/20/2022] Open
Abstract
The arms and legs of man are evolutionarily derived from the paired fins of primitive jawed fish. Few evolutionary changes have attracted as much attention as the origin of tetrapod limbs from the paired fins of ancestral fish. The hindlimbs of tetrapods are derived from the pelvic fins of ancestral fish. These evolutionary origins can be seen in the examination of shared gene and protein expression patterns during the development of pelvic fins and tetrapod hindlimbs. The pelvic fins of fish express key limb positioning, limb bud induction and limb outgrowth genes in a similar manner to that seen in hindlimb development of higher vertebrates. We are now at a point where many of the key players in the development of pelvic fins and vertebrate hindlimbs have been identified and we can now readily examine and compare mechanisms between species. This is yielding fascinating insights into how the developmental programme has altered during evolution and how that relates to anatomical change. The role of pelvic fins has also drastically changed over evolutionary history, from playing a minor role during swimming to developing into robust weight-bearing limbs. In addition, the pelvic fins/hindlimbs have been lost repeatedly in diverse species over evolutionary time. Here we review the evolution of pelvic fins and hindlimbs within the context of the changes in anatomical structure and the molecular mechanisms involved.
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Affiliation(s)
- Emily K Don
- Department of Anatomy & Histology, School of Medical Sciences and Bosch Institute, University of Sydney, Sydney, NSW, Australia
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ÁLVAREZ-PADILLA FERNANDO, HORMIGA GUSTAVO. Morphological and phylogenetic atlas of the orb-weaving spider family Tetragnathidae (Araneae: Araneoidea). Zool J Linn Soc 2011. [DOI: 10.1111/j.1096-3642.2011.00692.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abbasi AA. Evolution of vertebrate appendicular structures: Insight from genetic and palaeontological data. Dev Dyn 2011; 240:1005-16. [PMID: 21337665 DOI: 10.1002/dvdy.22572] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2011] [Indexed: 01/18/2023] Open
Abstract
The new body of evidence from fossils and comparative-developmental analysis of subset of appendicular patterning genes has revealed that limb elements seen in tetrapods are assembled in fish fin over evolutionary time. However, despite of deep homology in basic structure and underlying developmental system, there remains a large morphological gap between distal elements of tetrapod limb and distal fin skeleton of tetrapodomorph fish. Understanding the genetic basis of major transformations in distal-limb morphology is the next challenge for evolutionary developmental biologists. Here by integrating data from fossils, comparative-developmental and genetic studies, models are proposed describing the evolution of cis-regulatory elements as a basis for diversification of appendicular architecture. Instead of emphasizing the subset of developmental genes, for instance Hoxd genes, the focus here is on the significance of elucidating cis-regulatory elements for multiple other key molecular players of limb/fin development and genetic/molecular interactions among them, for a better understanding of the developmental and genetic basis of limb evolution.
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Affiliation(s)
- Amir Ali Abbasi
- National Center for Bioinformatics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
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Tri-phasic expression of posterior Hox genes during development of pectoral fins in zebrafish: implications for the evolution of vertebrate paired appendages. Dev Biol 2008; 322:220-33. [PMID: 18638469 DOI: 10.1016/j.ydbio.2008.06.032] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 06/16/2008] [Accepted: 06/17/2008] [Indexed: 11/24/2022]
Abstract
During development of the limbs, Hox genes belonging to the paralogous groups 9-13 are expressed in three distinct phases, which play key roles in the segmental patterning of limb skeletons. In teleost fishes, which have a very different organization in their fin skeletons, it is not clear whether a similar patterning mechanism is at work. To determine whether Hox genes are also expressed in several distinct phases during teleost paired fin development, we re-analyzed the expression patterns of hox9-13 genes during development of pectoral fins in zebrafish. We found that, similar to tetrapod Hox genes, expression of hoxa/d genes in zebrafish pectoral fins occurs in three distinct phases, in which the most distal/third phase is correlated with the development of the most distal structure of the fin, the fin blade. Like in tetrapods, hox gene expression in zebrafish pectoral fins during the distal/third phase is dependent upon sonic hedgehog signaling (hoxa and hoxd genes) and the presence of a long-range enhancer (hoxa genes), which indicates that the regulatory mechanisms underlying tri-phasic expression of Hox genes have remained relatively unchanged during evolution. Our results suggest that, although simpler in organization, teleost fins do have a distal structure that might be considered comparable to the autopod region of limbs.
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Stopper GF, Wagner GP. Of chicken wings and frog legs: a smorgasbord of evolutionary variation in mechanisms of tetrapod limb development. Dev Biol 2005; 288:21-39. [PMID: 16246321 DOI: 10.1016/j.ydbio.2005.09.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Revised: 09/06/2005] [Accepted: 09/06/2005] [Indexed: 01/24/2023]
Abstract
The tetrapod limb, which has served as a paradigm for the study of development and morphological evolution, is becoming a paradigm for developmental evolution as well. In its origin and diversification, the tetrapod limb has undergone a great deal of remodeling. These morphological changes and other evolutionary phenomena have produced variation in mechanisms of tetrapod limb development. Here, we review that variation in the four major clades of limbed tetrapods. Comparisons in a phylogenetic context reveal details of development and evolution that otherwise may have been unclear. Such details include apparent differences in the mechanisms of dorsal-ventral patterning and limb identity specification between mouse and chick and mechanistic novelties in amniotes, anurans, and urodeles. As we gain a better understanding of the details of limb development, further differences among taxa will be revealed. The use of appropriate comparative techniques in a phylogenetic context thus sheds light on evolutionary transitions in limb morphology and the generality of developmental models across species and is therefore important to both evolutionary and developmental biologists.
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Affiliation(s)
- Geffrey F Stopper
- Department of Ecology and Evolutionary Biology, Yale University, 165 Prospect Street, New Haven, CT 06520, USA.
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Santini F, Stellwag EJ. Phylogeny, fossils, and model systems in the study of evolutionary developmental biology. Mol Phylogenet Evol 2002; 24:379-83. [PMID: 12220980 DOI: 10.1016/s1055-7903(02)00209-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The emerging field of evolutionary developmental biology (evo-devo) continues to operate largely under a single paradigm. In this paradigm developmental regulatory genes and processes are compared among a collection of "model organisms" selected primarily on the basis of their historical utility in the study of development. This approach has proven to be extremely informative, revealing an unexpected deep evolutionary conservation among developmental genes and genetic systems. Despite its success, concern has been expressed regarding its limitations. We discuss the "model organism" paradigm in evo-devo research. Based on our interpretation of its limitations, we propose a separate but complementary approach that is centered on "model groups." These groups are selected on the basis of their taxonomic affinity and their relevance to questions of interest to evo-devo biologists. We further discuss the Tetraodontiformes (Teleostei, Pisces) as an example of a "model group" for the evo-devo study of vertebrate skeletal elements.
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Affiliation(s)
- Francesco Santini
- Department of Zoology, Ramsay Wright Zoological Laboratories, University of Toronto, 25 Harbord Street, Toronto, Canada, M5S 3G5.
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