Predator−prey body size relationships of cod in a low-diversity marine system
How predators select their prey largely defines ecosystem trophic structure, function and dynamics. In aquatic systems, organism body size is an important trait explaining predator− prey interactions. Here, we used a unique Atlantic cod Gadus morhua stomach content dataset with diet information from...
Published in: | Marine Ecology Progress Series |
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2019
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ftdtupubl:oai:pure.atira.dk:publications/5dffb1e2-d0ca-44ce-b99d-b0be5359fa00 2023-05-15T15:27:39+02:00 Predator−prey body size relationships of cod in a low-diversity marine system Niiranen, Susa Orio, Alessandro Bartolino, Valerio Bergström, Ulf Kallasvuo, Meri Neuenfeldt, Stefan Ustups, Didzis Casini, Michele 2019 application/pdf https://orbit.dtu.dk/en/publications/5dffb1e2-d0ca-44ce-b99d-b0be5359fa00 https://doi.org/10.3354/meps13098 https://backend.orbit.dtu.dk/ws/files/195076865/m627p201.pdf eng eng info:eu-repo/semantics/openAccess Niiranen , S , Orio , A , Bartolino , V , Bergström , U , Kallasvuo , M , Neuenfeldt , S , Ustups , D & Casini , M 2019 , ' Predator−prey body size relationships of cod in a low-diversity marine system ' , Marine Ecology - Progress Series , vol. 627 , pp. 201-206 . https://doi.org/10.3354/meps13098 Diet Body size Predator−prey mass ratio Gadus morhua Baltic Sea Stomach content data /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water article 2019 ftdtupubl https://doi.org/10.3354/meps13098 2023-01-12T00:11:24Z How predators select their prey largely defines ecosystem trophic structure, function and dynamics. In aquatic systems, organism body size is an important trait explaining predator− prey interactions. Here, we used a unique Atlantic cod Gadus morhua stomach content dataset with diet information from over 100 000 individuals collected from the Baltic Sea in 1963−2014, to explore prey size distribution and predator−prey mass ratios in the diet of Eastern Baltic cod. Maximum and average prey sizes increased with predator size, as for cod in other systems. However, the prey size spectra found in Eastern Baltic cod stomachs reflect the low species diversity in the Baltic Sea. In general, Eastern Baltic cod feed on smaller prey in relation to their body size than other cod populations. Due to the truncated prey size distribution in the Baltic Sea, cod cannibalism functions as a compensatory mechanism that allows Baltic cod to reach their prey size potential. On the other hand, small- and intermediate-sized cod prey mainly on a few invertebrate prey species, potentially making them vulnerable to changes in these prey populations. Our results encourage further studies disentangling the relative effects of prey preference and prey availability on cod trophodynamics in species-poor systems such as the Baltic Sea. Article in Journal/Newspaper atlantic cod Gadus morhua Technical University of Denmark: DTU Orbit Marine Ecology Progress Series 627 201 206 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Diet Body size Predator−prey mass ratio Gadus morhua Baltic Sea Stomach content data /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
spellingShingle |
Diet Body size Predator−prey mass ratio Gadus morhua Baltic Sea Stomach content data /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water Niiranen, Susa Orio, Alessandro Bartolino, Valerio Bergström, Ulf Kallasvuo, Meri Neuenfeldt, Stefan Ustups, Didzis Casini, Michele Predator−prey body size relationships of cod in a low-diversity marine system |
topic_facet |
Diet Body size Predator−prey mass ratio Gadus morhua Baltic Sea Stomach content data /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
description |
How predators select their prey largely defines ecosystem trophic structure, function and dynamics. In aquatic systems, organism body size is an important trait explaining predator− prey interactions. Here, we used a unique Atlantic cod Gadus morhua stomach content dataset with diet information from over 100 000 individuals collected from the Baltic Sea in 1963−2014, to explore prey size distribution and predator−prey mass ratios in the diet of Eastern Baltic cod. Maximum and average prey sizes increased with predator size, as for cod in other systems. However, the prey size spectra found in Eastern Baltic cod stomachs reflect the low species diversity in the Baltic Sea. In general, Eastern Baltic cod feed on smaller prey in relation to their body size than other cod populations. Due to the truncated prey size distribution in the Baltic Sea, cod cannibalism functions as a compensatory mechanism that allows Baltic cod to reach their prey size potential. On the other hand, small- and intermediate-sized cod prey mainly on a few invertebrate prey species, potentially making them vulnerable to changes in these prey populations. Our results encourage further studies disentangling the relative effects of prey preference and prey availability on cod trophodynamics in species-poor systems such as the Baltic Sea. |
format |
Article in Journal/Newspaper |
author |
Niiranen, Susa Orio, Alessandro Bartolino, Valerio Bergström, Ulf Kallasvuo, Meri Neuenfeldt, Stefan Ustups, Didzis Casini, Michele |
author_facet |
Niiranen, Susa Orio, Alessandro Bartolino, Valerio Bergström, Ulf Kallasvuo, Meri Neuenfeldt, Stefan Ustups, Didzis Casini, Michele |
author_sort |
Niiranen, Susa |
title |
Predator−prey body size relationships of cod in a low-diversity marine system |
title_short |
Predator−prey body size relationships of cod in a low-diversity marine system |
title_full |
Predator−prey body size relationships of cod in a low-diversity marine system |
title_fullStr |
Predator−prey body size relationships of cod in a low-diversity marine system |
title_full_unstemmed |
Predator−prey body size relationships of cod in a low-diversity marine system |
title_sort |
predator−prey body size relationships of cod in a low-diversity marine system |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/5dffb1e2-d0ca-44ce-b99d-b0be5359fa00 https://doi.org/10.3354/meps13098 https://backend.orbit.dtu.dk/ws/files/195076865/m627p201.pdf |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Niiranen , S , Orio , A , Bartolino , V , Bergström , U , Kallasvuo , M , Neuenfeldt , S , Ustups , D & Casini , M 2019 , ' Predator−prey body size relationships of cod in a low-diversity marine system ' , Marine Ecology - Progress Series , vol. 627 , pp. 201-206 . https://doi.org/10.3354/meps13098 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps13098 |
container_title |
Marine Ecology Progress Series |
container_volume |
627 |
container_start_page |
201 |
op_container_end_page |
206 |
_version_ |
1766358068772208640 |