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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Online Access: | https://hal.science/hal-04238001 https://hal.science/hal-04238001/document https://hal.science/hal-04238001/file/s00435-019-00464-2.pdf https://doi.org/10.1007/s00435-019-00464-2 |
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ftccsdartic:oai:HAL:hal-04238001v1 2023-11-12T04:15:50+01:00 Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark Ahnelt, Harald Sauberer, Michael Ramler, David Koch, Laura Pogoreutz, Claudia University of Vienna Vienna Austrian Institute of Technology Vienna (AIT) Department of Limnology and Bio-Oceanography Universität Wien Red Sea Research Centre (RSRC) King Abdullah University of Science and Technology (KAUST) 2020-03 https://hal.science/hal-04238001 https://hal.science/hal-04238001/document https://hal.science/hal-04238001/file/s00435-019-00464-2.pdf https://doi.org/10.1007/s00435-019-00464-2 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00435-019-00464-2 hal-04238001 https://hal.science/hal-04238001 https://hal.science/hal-04238001/document https://hal.science/hal-04238001/file/s00435-019-00464-2.pdf doi:10.1007/s00435-019-00464-2 info:eu-repo/semantics/OpenAccess ISSN: 0720-213X EISSN: 1432-234X Zoomorphology https://hal.science/hal-04238001 Zoomorphology, 2020, 139 (1), pp.71-83. ⟨10.1007/s00435-019-00464-2⟩ [SDE]Environmental Sciences [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.1007/s00435-019-00464-2 2023-10-21T22:44:30Z 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Zoomorphology 139 1 71 83 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences [SDV]Life Sciences [q-bio] |
spellingShingle |
[SDE]Environmental Sciences [SDV]Life Sciences [q-bio] 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 |
[SDE]Environmental Sciences [SDV]Life Sciences [q-bio] |
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. |
author2 |
University of Vienna Vienna Austrian Institute of Technology Vienna (AIT) Department of Limnology and Bio-Oceanography Universität Wien Red Sea Research Centre (RSRC) King Abdullah University of Science and Technology (KAUST) |
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 |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-04238001 https://hal.science/hal-04238001/document https://hal.science/hal-04238001/file/s00435-019-00464-2.pdf https://doi.org/10.1007/s00435-019-00464-2 |
genre |
Cetorhinus maximus |
genre_facet |
Cetorhinus maximus |
op_source |
ISSN: 0720-213X EISSN: 1432-234X Zoomorphology https://hal.science/hal-04238001 Zoomorphology, 2020, 139 (1), pp.71-83. ⟨10.1007/s00435-019-00464-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00435-019-00464-2 hal-04238001 https://hal.science/hal-04238001 https://hal.science/hal-04238001/document https://hal.science/hal-04238001/file/s00435-019-00464-2.pdf doi:10.1007/s00435-019-00464-2 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00435-019-00464-2 |
container_title |
Zoomorphology |
container_volume |
139 |
container_issue |
1 |
container_start_page |
71 |
op_container_end_page |
83 |
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1782333098928635904 |