A true caudal fin or not? New insights in the evolution of the gadiform caudal fin
Abstract The distinctive caudal-fin skeleton of gadiforms has puzzled scientists for a long time, because of its many differences in comparison to other teleosts. Contradicting hypotheses interpreted this structure as (i) a highly derived teleostean caudal fin, (ii) a new formation with parts from t...
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2023
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Online Access: | http://dx.doi.org/10.1093/zoolinnean/zlad017 https://academic.oup.com/zoolinnean/article-pdf/199/1/26/51308425/zlad017.pdf |
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croxfordunivpr:10.1093/zoolinnean/zlad017 2023-10-01T03:57:18+02:00 A true caudal fin or not? New insights in the evolution of the gadiform caudal fin Moritz, Timo Walter, Jacqueline Grunow, Bianka Thieme, Philipp 2023 http://dx.doi.org/10.1093/zoolinnean/zlad017 https://academic.oup.com/zoolinnean/article-pdf/199/1/26/51308425/zlad017.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ Zoological Journal of the Linnean Society volume 199, issue 1, page 26-44 ISSN 0024-4082 1096-3642 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2023 croxfordunivpr https://doi.org/10.1093/zoolinnean/zlad017 2023-09-08T10:47:18Z Abstract The distinctive caudal-fin skeleton of gadiforms has puzzled scientists for a long time, because of its many differences in comparison to other teleosts. Contradicting hypotheses interpreted this structure as (i) a highly derived teleostean caudal fin, (ii) a new formation with parts from the caudal, dorsal and anal fins, a so called pseudocaudal, or (iii) a complete evolutionary novelty, a so called neocaudal. To shed light on to this issue, the caudal-fin ontogeny of Lota lota was studied in detail. It differs from the development in non-gadiform teleostean taxa, e.g. by absence of a distinct and early notochord flexion. However, there are also many similarities with other teleosts, e.g. the caudal fin develops before the dorsal and anal fins. Furthermore, the morphology of adult caudal fins of all major gadiform families were studied and reviewed. Our results, in combination with the latest molecular phylogenies, allowed us to discuss the evolution of the gadiform caudal fin and resolve the origin of this highly debated character complex. Although their caudal-fin skeleton shows several derived apomorphies, the gadiform caudal fin is homologous to the caudal fins of other teleosts, without principal inclusion of dorsal- or anal-fin elements. Article in Journal/Newspaper Lota lota lota Oxford University Press (via Crossref) Zoological Journal of the Linnean Society 199 1 26 44 |
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Open Polar |
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Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
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Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Moritz, Timo Walter, Jacqueline Grunow, Bianka Thieme, Philipp A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract The distinctive caudal-fin skeleton of gadiforms has puzzled scientists for a long time, because of its many differences in comparison to other teleosts. Contradicting hypotheses interpreted this structure as (i) a highly derived teleostean caudal fin, (ii) a new formation with parts from the caudal, dorsal and anal fins, a so called pseudocaudal, or (iii) a complete evolutionary novelty, a so called neocaudal. To shed light on to this issue, the caudal-fin ontogeny of Lota lota was studied in detail. It differs from the development in non-gadiform teleostean taxa, e.g. by absence of a distinct and early notochord flexion. However, there are also many similarities with other teleosts, e.g. the caudal fin develops before the dorsal and anal fins. Furthermore, the morphology of adult caudal fins of all major gadiform families were studied and reviewed. Our results, in combination with the latest molecular phylogenies, allowed us to discuss the evolution of the gadiform caudal fin and resolve the origin of this highly debated character complex. Although their caudal-fin skeleton shows several derived apomorphies, the gadiform caudal fin is homologous to the caudal fins of other teleosts, without principal inclusion of dorsal- or anal-fin elements. |
format |
Article in Journal/Newspaper |
author |
Moritz, Timo Walter, Jacqueline Grunow, Bianka Thieme, Philipp |
author_facet |
Moritz, Timo Walter, Jacqueline Grunow, Bianka Thieme, Philipp |
author_sort |
Moritz, Timo |
title |
A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
title_short |
A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
title_full |
A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
title_fullStr |
A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
title_full_unstemmed |
A true caudal fin or not? New insights in the evolution of the gadiform caudal fin |
title_sort |
true caudal fin or not? new insights in the evolution of the gadiform caudal fin |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/zoolinnean/zlad017 https://academic.oup.com/zoolinnean/article-pdf/199/1/26/51308425/zlad017.pdf |
genre |
Lota lota lota |
genre_facet |
Lota lota lota |
op_source |
Zoological Journal of the Linnean Society volume 199, issue 1, page 26-44 ISSN 0024-4082 1096-3642 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/zoolinnean/zlad017 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
199 |
container_issue |
1 |
container_start_page |
26 |
op_container_end_page |
44 |
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1778528477794795520 |