Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla)
Being part of the elopomorph group of fishes, Anguillidae species show a leptocephalus larval stage. However, due to largely unknown spawning locations and habitats of their earliest life stages, as well as their transparency, these Anguilla larvae are rarely encountered in nature. Therefore, inform...
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ftunivgent:oai:archive.ugent.be:7075462 2023-06-11T04:03:42+02:00 Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) Bouilliart, Mathias Tomkiewicz, Jonna Lauesen, Peter De Kegel, Barbara Adriaens, Dominique 2015 application/pdf https://biblio.ugent.be/publication/7075462 http://hdl.handle.net/1854/LU-7075462 https://doi.org/10.1111/joa.12335 https://biblio.ugent.be/publication/7075462/file/7075636 eng eng https://biblio.ugent.be/publication/7075462 http://hdl.handle.net/1854/LU-7075462 http://dx.doi.org/10.1111/joa.12335 https://biblio.ugent.be/publication/7075462/file/7075636 No license (in copyright) info:eu-repo/semantics/restrictedAccess JOURNAL OF ANATOMY ISSN: 0021-8782 Biology and Life Sciences functional morphology Anguilla anguilla bite force feeding performance engyodontic leptocephali RESPIRATION RECRUITMENT OPHICHTHIDAE ONTOGENY LEPTOCEPHALI MORPHOLOGY GADUS-MORHUA TELEOSTEI FRESH-WATER EELS ANGUILLA SARGASSO SEA journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftunivgent https://doi.org/10.1111/joa.12335 2023-05-10T22:31:39Z Being part of the elopomorph group of fishes, Anguillidae species show a leptocephalus larval stage. However, due to largely unknown spawning locations and habitats of their earliest life stages, as well as their transparency, these Anguilla larvae are rarely encountered in nature. Therefore, information regarding the early life history of these larvae, including their exogenous feeding strategy and feeding performance, is rather scarce. To better understand the structural basis and functional performance of larval feeding in captivity, the functional morphology of the cranial musculoskeletal system in pre- and first-feeding engyodontic leptocephali of the European eel (Anguilla anguilla) was studied. A 3D reconstruction of the feeding apparatus (head of the leptocephali < 1 mm) was used to visualize and describe the musculoskeletal changes throughout these stages. To analyze the ontogenetic changes in the functionality of the feeding apparatus towards the active feeding phase, 3D data of joints, levers and muscles derived from the reconstructions were used to estimate bite and joint reaction forces (JRFs). Observing a maximum estimated bite force of about 65 lN (and corresponding JRFs of 260 lN), it can be hypothesized that leptocephalus larvae are functionally constrained to feed only on soft food particles. Additionally, potential prey items are size delimited, based on the theoretically estimated average gape of these larvae of about 100 lm. This hypothesis appears to be in line with recent observations of a diet consisting of small and/or gelatinous prey items (Hydrozoa, Thaliacea, Ctenophora, Polycystenia) found in the guts of euryodontic leptocephalus larvae. Article in Journal/Newspaper Anguilla anguilla European eel Gadus morhua Ghent University Academic Bibliography Journal of Anatomy 227 3 325 340 |
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Open Polar |
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Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences functional morphology Anguilla anguilla bite force feeding performance engyodontic leptocephali RESPIRATION RECRUITMENT OPHICHTHIDAE ONTOGENY LEPTOCEPHALI MORPHOLOGY GADUS-MORHUA TELEOSTEI FRESH-WATER EELS ANGUILLA SARGASSO SEA |
spellingShingle |
Biology and Life Sciences functional morphology Anguilla anguilla bite force feeding performance engyodontic leptocephali RESPIRATION RECRUITMENT OPHICHTHIDAE ONTOGENY LEPTOCEPHALI MORPHOLOGY GADUS-MORHUA TELEOSTEI FRESH-WATER EELS ANGUILLA SARGASSO SEA Bouilliart, Mathias Tomkiewicz, Jonna Lauesen, Peter De Kegel, Barbara Adriaens, Dominique Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
topic_facet |
Biology and Life Sciences functional morphology Anguilla anguilla bite force feeding performance engyodontic leptocephali RESPIRATION RECRUITMENT OPHICHTHIDAE ONTOGENY LEPTOCEPHALI MORPHOLOGY GADUS-MORHUA TELEOSTEI FRESH-WATER EELS ANGUILLA SARGASSO SEA |
description |
Being part of the elopomorph group of fishes, Anguillidae species show a leptocephalus larval stage. However, due to largely unknown spawning locations and habitats of their earliest life stages, as well as their transparency, these Anguilla larvae are rarely encountered in nature. Therefore, information regarding the early life history of these larvae, including their exogenous feeding strategy and feeding performance, is rather scarce. To better understand the structural basis and functional performance of larval feeding in captivity, the functional morphology of the cranial musculoskeletal system in pre- and first-feeding engyodontic leptocephali of the European eel (Anguilla anguilla) was studied. A 3D reconstruction of the feeding apparatus (head of the leptocephali < 1 mm) was used to visualize and describe the musculoskeletal changes throughout these stages. To analyze the ontogenetic changes in the functionality of the feeding apparatus towards the active feeding phase, 3D data of joints, levers and muscles derived from the reconstructions were used to estimate bite and joint reaction forces (JRFs). Observing a maximum estimated bite force of about 65 lN (and corresponding JRFs of 260 lN), it can be hypothesized that leptocephalus larvae are functionally constrained to feed only on soft food particles. Additionally, potential prey items are size delimited, based on the theoretically estimated average gape of these larvae of about 100 lm. This hypothesis appears to be in line with recent observations of a diet consisting of small and/or gelatinous prey items (Hydrozoa, Thaliacea, Ctenophora, Polycystenia) found in the guts of euryodontic leptocephalus larvae. |
format |
Article in Journal/Newspaper |
author |
Bouilliart, Mathias Tomkiewicz, Jonna Lauesen, Peter De Kegel, Barbara Adriaens, Dominique |
author_facet |
Bouilliart, Mathias Tomkiewicz, Jonna Lauesen, Peter De Kegel, Barbara Adriaens, Dominique |
author_sort |
Bouilliart, Mathias |
title |
Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
title_short |
Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
title_full |
Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
title_fullStr |
Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
title_full_unstemmed |
Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla) |
title_sort |
musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the european eel (anguilla anguilla) |
publishDate |
2015 |
url |
https://biblio.ugent.be/publication/7075462 http://hdl.handle.net/1854/LU-7075462 https://doi.org/10.1111/joa.12335 https://biblio.ugent.be/publication/7075462/file/7075636 |
genre |
Anguilla anguilla European eel Gadus morhua |
genre_facet |
Anguilla anguilla European eel Gadus morhua |
op_source |
JOURNAL OF ANATOMY ISSN: 0021-8782 |
op_relation |
https://biblio.ugent.be/publication/7075462 http://hdl.handle.net/1854/LU-7075462 http://dx.doi.org/10.1111/joa.12335 https://biblio.ugent.be/publication/7075462/file/7075636 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/joa.12335 |
container_title |
Journal of Anatomy |
container_volume |
227 |
container_issue |
3 |
container_start_page |
325 |
op_container_end_page |
340 |
_version_ |
1768382016248610816 |