Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea
Stomach content composition and prey-specific consumption rates of juvenile and adult harbor porpoises (Phocoena phocoena) were estimated from a data set including 339 stomachs collected over a 32 yr period (1980–2011) in the western Baltic Sea. The stomach contents were mainly hard parts of fish pr...
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ftopenagrar:oai:www.openagrar.de:openagrar_mods_00033526 2024-09-15T17:55:27+00:00 Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea Andreasen, Heidi Ross, Stine D. Siebert, Ursula Andersen, Niels G. Ronnenberg, Katrin Gilles, Anita 2017 https://doi.org/10.1111/mms.12421 https://www.openagrar.de/receive/openagrar_mods_00033526 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00008182/dn058974.pdf eng eng Marine mammal science -- 0824-0469 -- 1748-7692 -- 12787-5 -- 2218018-7 -- http://www.bibliothek.uni-regensburg.de/ezeit/?2218018 https://doi.org/10.1111/mms.12421 https://www.openagrar.de/receive/openagrar_mods_00033526 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00008182/dn058974.pdf only signed in user all rights reserved info:eu-repo/semantics/restrictedAccess Text article ddc:570 Atlantic cod Baltic Sea food rations gobies harbor porpoise herring stomach contents atomach residence time of otoliths article Text doc-type:article 2017 ftopenagrar https://doi.org/10.1111/mms.12421 2024-07-08T23:56:25Z Stomach content composition and prey-specific consumption rates of juvenile and adult harbor porpoises (Phocoena phocoena) were estimated from a data set including 339 stomachs collected over a 32 yr period (1980–2011) in the western Baltic Sea. The stomach contents were mainly hard parts of fish prey and in particular otoliths. The bias originating from differential residence time of otoliths in the stomachs was addressed by use of a recently developed approach. Atlantic cod and herring were the main prey of adults, constituting on average 70% of the diet mass. Juvenile porpoises also frequently consumed gobies. Here, the mass contribution by gobies was on average 25%, which was as much as cod. Other species such as whiting, sprat, eelpout, and sandeels were of minor importance for both juveniles and adults. The diet composition differed between years, quarters, and porpoise acquisition method. Yearly consumption rates for porpoises in the western Baltic Sea were obtained in three scenarios on the daily energy requirements of a porpoise in combination with an estimate including the 95%CLs of the porpoise population size. Cod of age groups 1 and 2 and intermediate-sized herring suffered the highest predation from porpoises. Article in Journal/Newspaper atlantic cod Phocoena phocoena OpenAgrar (OA) Marine Mammal Science 33 4 1053 1079 |
institution |
Open Polar |
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OpenAgrar (OA) |
op_collection_id |
ftopenagrar |
language |
English |
topic |
Text article ddc:570 Atlantic cod Baltic Sea food rations gobies harbor porpoise herring stomach contents atomach residence time of otoliths |
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Text article ddc:570 Atlantic cod Baltic Sea food rations gobies harbor porpoise herring stomach contents atomach residence time of otoliths Andreasen, Heidi Ross, Stine D. Siebert, Ursula Andersen, Niels G. Ronnenberg, Katrin Gilles, Anita Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
topic_facet |
Text article ddc:570 Atlantic cod Baltic Sea food rations gobies harbor porpoise herring stomach contents atomach residence time of otoliths |
description |
Stomach content composition and prey-specific consumption rates of juvenile and adult harbor porpoises (Phocoena phocoena) were estimated from a data set including 339 stomachs collected over a 32 yr period (1980–2011) in the western Baltic Sea. The stomach contents were mainly hard parts of fish prey and in particular otoliths. The bias originating from differential residence time of otoliths in the stomachs was addressed by use of a recently developed approach. Atlantic cod and herring were the main prey of adults, constituting on average 70% of the diet mass. Juvenile porpoises also frequently consumed gobies. Here, the mass contribution by gobies was on average 25%, which was as much as cod. Other species such as whiting, sprat, eelpout, and sandeels were of minor importance for both juveniles and adults. The diet composition differed between years, quarters, and porpoise acquisition method. Yearly consumption rates for porpoises in the western Baltic Sea were obtained in three scenarios on the daily energy requirements of a porpoise in combination with an estimate including the 95%CLs of the porpoise population size. Cod of age groups 1 and 2 and intermediate-sized herring suffered the highest predation from porpoises. |
format |
Article in Journal/Newspaper |
author |
Andreasen, Heidi Ross, Stine D. Siebert, Ursula Andersen, Niels G. Ronnenberg, Katrin Gilles, Anita |
author_facet |
Andreasen, Heidi Ross, Stine D. Siebert, Ursula Andersen, Niels G. Ronnenberg, Katrin Gilles, Anita |
author_sort |
Andreasen, Heidi |
title |
Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
title_short |
Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
title_full |
Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
title_fullStr |
Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
title_full_unstemmed |
Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea |
title_sort |
diet composition and food consumption rate of harbor porpoises (phocoena phocoena) in the western baltic sea |
publishDate |
2017 |
url |
https://doi.org/10.1111/mms.12421 https://www.openagrar.de/receive/openagrar_mods_00033526 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00008182/dn058974.pdf |
genre |
atlantic cod Phocoena phocoena |
genre_facet |
atlantic cod Phocoena phocoena |
op_relation |
Marine mammal science -- 0824-0469 -- 1748-7692 -- 12787-5 -- 2218018-7 -- http://www.bibliothek.uni-regensburg.de/ezeit/?2218018 https://doi.org/10.1111/mms.12421 https://www.openagrar.de/receive/openagrar_mods_00033526 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00008182/dn058974.pdf |
op_rights |
only signed in user all rights reserved info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/mms.12421 |
container_title |
Marine Mammal Science |
container_volume |
33 |
container_issue |
4 |
container_start_page |
1053 |
op_container_end_page |
1079 |
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1810431733630238720 |