Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria
The Ovalentaria is a taxon of teleosts that has been proposed based on molecular analyses only. Previously widely separated families are assembled in this taxon. For the first time, the Ovalentaria are analysed using a comparative morphological approach. The caudal-fin skeleton of 355 species coveri...
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| Format: | Article |
| Language: | English |
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The Royal Society
2022-01-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.211605 |
| _version_ | 1827957935768076288 |
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| author | Philipp Thieme Nalani K. Schnell Kerryn Parkinson Timo Moritz |
| author_facet | Philipp Thieme Nalani K. Schnell Kerryn Parkinson Timo Moritz |
| author_sort | Philipp Thieme |
| collection | DOAJ |
| description | The Ovalentaria is a taxon of teleosts that has been proposed based on molecular analyses only. Previously widely separated families are assembled in this taxon. For the first time, the Ovalentaria are analysed using a comparative morphological approach. The caudal-fin skeleton of 355 species covering all 48 ovalentarian families are examined in cleared and stained specimens, µCT datasets and X-ray images as well as from the literature. A total of 38 morphological characters are evaluated and used for ancestral character state reconstructions and phylogenetic analyses. Results provide hypotheses for a scenario of the evolution of the caudal-fin skeleton and its ground plan in Ovalentaria. An evolutionary trend towards the reduction of skeletal elements in the caudal fin is observed. Connections between the evolution of the caudal-fin skeleton and modes of locomotion found in ovalentarian taxa are discussed. Phylogenetic analyses based on the caudal-fin morphology provide topologies for intra-ovalentarian relationships that largely agree with molecular hypotheses. |
| first_indexed | 2024-04-09T15:27:43Z |
| format | Article |
| id | doaj.art-38ade5552cd54296b114ef9f96c57500 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-04-09T15:27:43Z |
| publishDate | 2022-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-38ade5552cd54296b114ef9f96c575002023-04-28T11:04:04ZengThe Royal SocietyRoyal Society Open Science2054-57032022-01-019110.1098/rsos.211605Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of OvalentariaPhilipp Thieme0Nalani K. Schnell1Kerryn Parkinson2Timo Moritz3Deutsches Meeresmuseum, Katharinenberg 14-20, 18439 Stralsund, GermanyInstitut Systématique Evolution Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Station Marine de Concarneau, Place de la Croix, 29900 Concarneau, FranceAustralian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, AustraliaDeutsches Meeresmuseum, Katharinenberg 14-20, 18439 Stralsund, GermanyThe Ovalentaria is a taxon of teleosts that has been proposed based on molecular analyses only. Previously widely separated families are assembled in this taxon. For the first time, the Ovalentaria are analysed using a comparative morphological approach. The caudal-fin skeleton of 355 species covering all 48 ovalentarian families are examined in cleared and stained specimens, µCT datasets and X-ray images as well as from the literature. A total of 38 morphological characters are evaluated and used for ancestral character state reconstructions and phylogenetic analyses. Results provide hypotheses for a scenario of the evolution of the caudal-fin skeleton and its ground plan in Ovalentaria. An evolutionary trend towards the reduction of skeletal elements in the caudal fin is observed. Connections between the evolution of the caudal-fin skeleton and modes of locomotion found in ovalentarian taxa are discussed. Phylogenetic analyses based on the caudal-fin morphology provide topologies for intra-ovalentarian relationships that largely agree with molecular hypotheses.https://royalsocietypublishing.org/doi/10.1098/rsos.211605Teleosteicomparative anatomyancestral character state reconstructionCichlidaeAtherinomorphalocomotion |
| spellingShingle | Philipp Thieme Nalani K. Schnell Kerryn Parkinson Timo Moritz Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria Royal Society Open Science Teleostei comparative anatomy ancestral character state reconstruction Cichlidae Atherinomorpha locomotion |
| title | Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria |
| title_full | Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria |
| title_fullStr | Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria |
| title_full_unstemmed | Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria |
| title_short | Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria |
| title_sort | morphological characters in light of new molecular phylogenies the caudal fin skeleton of ovalentaria |
| topic | Teleostei comparative anatomy ancestral character state reconstruction Cichlidae Atherinomorpha locomotion |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.211605 |
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