Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations
Longitudinal data on individual growth and seasonal changes in body mass, girth, and blubber thickness are rarely available for cetaceans, making it difficult to assess their population composition and individual nutritional condition. During different time intervals from 1997 to 2020, we collected...
Published in: | Global Ecology and Conservation |
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Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://doi.org/10.1016/j.gecco.2023.e02384 https://elib.tiho-hannover.de/receive/tiho_mods_00010501 https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00002717/1-s2.0-S2351989423000197-main.pdf https://www.sciencedirect.com/science/article/pii/S2351989423000197 |
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fttihohannover:oai:elib.tiho-hannover.de:tiho_mods_00010501 2024-09-15T18:30:26+00:00 Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations Stepien, Emilie Nicoline Nabe-Nielsen, Jacob Hansen, Kirstin Anderson Kristensen, Jakob Højer Blanchet, Marie-Anne Brando, Sabrina Desportes, Geneviève Lockyer, Christina Marcenaro, Lauro Bunskoek, Paulien Kemper, José Siebert, Ursula Olsen, Morten Tange Wahlberg, Magnus 2023 https://doi.org/10.1016/j.gecco.2023.e02384 https://elib.tiho-hannover.de/receive/tiho_mods_00010501 https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00002717/1-s2.0-S2351989423000197-main.pdf https://www.sciencedirect.com/science/article/pii/S2351989423000197 eng eng Global Ecology and Conservation -- http://www.sciencedirect.com/science/journal/23519894 -- http://www.bibliothek.uni-regensburg.de/ezeit/?2814786 -- 2814786-8 -- 2351-9894 https://doi.org/10.1016/j.gecco.2023.e02384 https://elib.tiho-hannover.de/receive/tiho_mods_00010501 https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00002717/1-s2.0-S2351989423000197-main.pdf https://www.sciencedirect.com/science/article/pii/S2351989423000197 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess article ddc:570 Hochschulbibliographie allgemein Verzeichnis wissenschaftlicher Veröffentlichungen 2023 article Text doc-type:article 2023 fttihohannover https://doi.org/10.1016/j.gecco.2023.e02384 2024-08-15T14:00:16Z Longitudinal data on individual growth and seasonal changes in body mass, girth, and blubber thickness are rarely available for cetaceans, making it difficult to assess their population composition and individual nutritional condition. During different time intervals from 1997 to 2020, we collected longitudinal data on length, body mass, girth,and blubber thickness from seventeen harbour porpoises (Phocoena phocoena) in human care. We compared Gompertz and von Bertalanffy growth curves to collected length data at age 0–4 years for five individuals with known dates of birth. Von Bertalanffy had the lowest AICc value and was used to predict the birth year of twelve animals which age had previously been estimated based on tooth ring analysis and ossification of flipper bones. The growth curve was accurate within 1 yr. of age estimates. Within the first year, the calves grew 66%, attaining 84% of their adult length, and reached asymptotic length at age 3–4. For adults, there were large seasonal variations in body mass, body mass index, girth, and blubber thickness, with up to 28% of variation in body mass between seasons. We predicted individual body mass within ± 2 kg using measurements of length and girth, allowing estimation of body mass index of individuals with unknown mass. Our findings enable monitoring and assessments of population composition as well as nutritional condition of individual harbour porpoises, which is crucial for assessing conservational status and guiding management. Article in Journal/Newspaper Phocoena phocoena TiHo eLib (University of Veterinary Medicine Hannover) Global Ecology and Conservation 42 e02384 |
institution |
Open Polar |
collection |
TiHo eLib (University of Veterinary Medicine Hannover) |
op_collection_id |
fttihohannover |
language |
English |
topic |
article ddc:570 Hochschulbibliographie allgemein Verzeichnis wissenschaftlicher Veröffentlichungen 2023 |
spellingShingle |
article ddc:570 Hochschulbibliographie allgemein Verzeichnis wissenschaftlicher Veröffentlichungen 2023 Stepien, Emilie Nicoline Nabe-Nielsen, Jacob Hansen, Kirstin Anderson Kristensen, Jakob Højer Blanchet, Marie-Anne Brando, Sabrina Desportes, Geneviève Lockyer, Christina Marcenaro, Lauro Bunskoek, Paulien Kemper, José Siebert, Ursula Olsen, Morten Tange Wahlberg, Magnus Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
topic_facet |
article ddc:570 Hochschulbibliographie allgemein Verzeichnis wissenschaftlicher Veröffentlichungen 2023 |
description |
Longitudinal data on individual growth and seasonal changes in body mass, girth, and blubber thickness are rarely available for cetaceans, making it difficult to assess their population composition and individual nutritional condition. During different time intervals from 1997 to 2020, we collected longitudinal data on length, body mass, girth,and blubber thickness from seventeen harbour porpoises (Phocoena phocoena) in human care. We compared Gompertz and von Bertalanffy growth curves to collected length data at age 0–4 years for five individuals with known dates of birth. Von Bertalanffy had the lowest AICc value and was used to predict the birth year of twelve animals which age had previously been estimated based on tooth ring analysis and ossification of flipper bones. The growth curve was accurate within 1 yr. of age estimates. Within the first year, the calves grew 66%, attaining 84% of their adult length, and reached asymptotic length at age 3–4. For adults, there were large seasonal variations in body mass, body mass index, girth, and blubber thickness, with up to 28% of variation in body mass between seasons. We predicted individual body mass within ± 2 kg using measurements of length and girth, allowing estimation of body mass index of individuals with unknown mass. Our findings enable monitoring and assessments of population composition as well as nutritional condition of individual harbour porpoises, which is crucial for assessing conservational status and guiding management. |
format |
Article in Journal/Newspaper |
author |
Stepien, Emilie Nicoline Nabe-Nielsen, Jacob Hansen, Kirstin Anderson Kristensen, Jakob Højer Blanchet, Marie-Anne Brando, Sabrina Desportes, Geneviève Lockyer, Christina Marcenaro, Lauro Bunskoek, Paulien Kemper, José Siebert, Ursula Olsen, Morten Tange Wahlberg, Magnus |
author_facet |
Stepien, Emilie Nicoline Nabe-Nielsen, Jacob Hansen, Kirstin Anderson Kristensen, Jakob Højer Blanchet, Marie-Anne Brando, Sabrina Desportes, Geneviève Lockyer, Christina Marcenaro, Lauro Bunskoek, Paulien Kemper, José Siebert, Ursula Olsen, Morten Tange Wahlberg, Magnus |
author_sort |
Stepien, Emilie Nicoline |
title |
Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
title_short |
Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
title_full |
Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
title_fullStr |
Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
title_full_unstemmed |
Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): implications for conservational status assessment of populations |
title_sort |
determination of growth, mass, and body mass index of harbour porpoises (phocoena phocoena): implications for conservational status assessment of populations |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.gecco.2023.e02384 https://elib.tiho-hannover.de/receive/tiho_mods_00010501 https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00002717/1-s2.0-S2351989423000197-main.pdf https://www.sciencedirect.com/science/article/pii/S2351989423000197 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
Global Ecology and Conservation -- http://www.sciencedirect.com/science/journal/23519894 -- http://www.bibliothek.uni-regensburg.de/ezeit/?2814786 -- 2814786-8 -- 2351-9894 https://doi.org/10.1016/j.gecco.2023.e02384 https://elib.tiho-hannover.de/receive/tiho_mods_00010501 https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00002717/1-s2.0-S2351989423000197-main.pdf https://www.sciencedirect.com/science/article/pii/S2351989423000197 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.gecco.2023.e02384 |
container_title |
Global Ecology and Conservation |
container_volume |
42 |
container_start_page |
e02384 |
_version_ |
1810471892702724096 |