Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark
Abstract Many pelagic shark species change body and fin shape isometrically or by positive allometry during ontogeny. But some large apex predators such as the white shark Carcharodon carcharias or the tiger shark Galeocerdo cuvier show distinct negative allometry, especially in traits related to fe...
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Springer Science and Business Media LLC
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Online Access: | http://dx.doi.org/10.1007/s00435-019-00464-2 http://link.springer.com/content/pdf/10.1007/s00435-019-00464-2.pdf http://link.springer.com/article/10.1007/s00435-019-00464-2/fulltext.html |
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crspringernat:10.1007/s00435-019-00464-2 2023-05-15T15:53:52+02:00 Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark Ahnelt, Harald Sauberer, Michael Ramler, David Koch, Laura Pogoreutz, Claudia 2019 http://dx.doi.org/10.1007/s00435-019-00464-2 http://link.springer.com/content/pdf/10.1007/s00435-019-00464-2.pdf http://link.springer.com/article/10.1007/s00435-019-00464-2/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Zoomorphology volume 139, issue 1, page 71-83 ISSN 0720-213X 1432-234X Developmental Biology Animal Science and Zoology journal-article 2019 crspringernat https://doi.org/10.1007/s00435-019-00464-2 2022-01-04T15:15:21Z Abstract Many pelagic shark species change body and fin shape isometrically or by positive allometry during ontogeny. But some large apex predators such as the white shark Carcharodon carcharias or the tiger shark Galeocerdo cuvier show distinct negative allometry, especially in traits related to feeding (head) or propulsion (caudal fin). In particular, changes in propulsion are attributed to a shift in swimming mode. The more heterocercal caudal fin of younger individuals with its large caudal fin span seemingly aids in hunting small, agile prey. In contrast, the less heterocercal caudal fin with a larger fin area in larger individuals aids a long-distance slow swimming mode. We were interested if negative allometric effects can be observed in a planktivorous shark, the basking shark Cetorhinus maximus , a large species adapted to long-distance slow swimming. To address this question, we compared three size classes, specifically < 260 cm (juveniles), 299–490 cm (subadults), and from adults > 541 cm total length. Comparing literature data, we found negative allometric growth of the head and of the caudal fin, but a more rapid decrease of relative caudal fin size than of relative head length. Hereby, we provide the first evidence for early negative allometric growth of the caudal fin in a large pelagic filter-feeding shark. Our study further demonstrates that ecomorphological approaches may add valuable insight into the life history of animals that are challenging to study in their natural habitat, including large roving sharks such as the basking shark. Article in Journal/Newspaper Cetorhinus maximus Springer Nature (via Crossref) Zoomorphology 139 1 71 83 |
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Open Polar |
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Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Developmental Biology Animal Science and Zoology |
spellingShingle |
Developmental Biology Animal Science and Zoology Ahnelt, Harald Sauberer, Michael Ramler, David Koch, Laura Pogoreutz, Claudia Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
topic_facet |
Developmental Biology Animal Science and Zoology |
description |
Abstract Many pelagic shark species change body and fin shape isometrically or by positive allometry during ontogeny. But some large apex predators such as the white shark Carcharodon carcharias or the tiger shark Galeocerdo cuvier show distinct negative allometry, especially in traits related to feeding (head) or propulsion (caudal fin). In particular, changes in propulsion are attributed to a shift in swimming mode. The more heterocercal caudal fin of younger individuals with its large caudal fin span seemingly aids in hunting small, agile prey. In contrast, the less heterocercal caudal fin with a larger fin area in larger individuals aids a long-distance slow swimming mode. We were interested if negative allometric effects can be observed in a planktivorous shark, the basking shark Cetorhinus maximus , a large species adapted to long-distance slow swimming. To address this question, we compared three size classes, specifically < 260 cm (juveniles), 299–490 cm (subadults), and from adults > 541 cm total length. Comparing literature data, we found negative allometric growth of the head and of the caudal fin, but a more rapid decrease of relative caudal fin size than of relative head length. Hereby, we provide the first evidence for early negative allometric growth of the caudal fin in a large pelagic filter-feeding shark. Our study further demonstrates that ecomorphological approaches may add valuable insight into the life history of animals that are challenging to study in their natural habitat, including large roving sharks such as the basking shark. |
format |
Article in Journal/Newspaper |
author |
Ahnelt, Harald Sauberer, Michael Ramler, David Koch, Laura Pogoreutz, Claudia |
author_facet |
Ahnelt, Harald Sauberer, Michael Ramler, David Koch, Laura Pogoreutz, Claudia |
author_sort |
Ahnelt, Harald |
title |
Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
title_short |
Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
title_full |
Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
title_fullStr |
Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
title_full_unstemmed |
Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
title_sort |
negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark |
publisher |
Springer Science and Business Media LLC |
publishDate |
2019 |
url |
http://dx.doi.org/10.1007/s00435-019-00464-2 http://link.springer.com/content/pdf/10.1007/s00435-019-00464-2.pdf http://link.springer.com/article/10.1007/s00435-019-00464-2/fulltext.html |
genre |
Cetorhinus maximus |
genre_facet |
Cetorhinus maximus |
op_source |
Zoomorphology volume 139, issue 1, page 71-83 ISSN 0720-213X 1432-234X |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00435-019-00464-2 |
container_title |
Zoomorphology |
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139 |
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1 |
container_start_page |
71 |
op_container_end_page |
83 |
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1766389038606974976 |