Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea
The invasive red king crab, Paralithodes camtschaticus , has become an abundant and important component in the food web of the coastal Barents Sea and can affect the structure and functioning of the local benthic communities through competition and predation. Although dietary composition and feeding...
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MDPI AG
2022
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ftdoajarticles:oai:doaj.org/article:b1fb7f4bce964fb19c757759afba6a0d 2024-01-07T09:42:24+01:00 Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea Lyudmila V. Pavlova Alexander G. Dvoretsky 2022-07-01T00:00:00Z https://doi.org/10.3390/d14070568 https://doaj.org/article/b1fb7f4bce964fb19c757759afba6a0d EN eng MDPI AG https://www.mdpi.com/1424-2818/14/7/568 https://doaj.org/toc/1424-2818 doi:10.3390/d14070568 1424-2818 https://doaj.org/article/b1fb7f4bce964fb19c757759afba6a0d Diversity, Vol 14, Iss 7, p 568 (2022) red king crab Paralithodes camtschaticus dietary composition benthos feeding selectivity Kola Bay Biology (General) QH301-705.5 article 2022 ftdoajarticles https://doi.org/10.3390/d14070568 2023-12-10T01:42:45Z The invasive red king crab, Paralithodes camtschaticus , has become an abundant and important component in the food web of the coastal Barents Sea and can affect the structure and functioning of the local benthic communities through competition and predation. Although dietary composition and feeding behavior of the crab have been intensively studied, prey selectivity in this species under natural conditions remains poorly defined. For this reason, juvenile red king crabs and benthic samples were collected simultaneously at five coastal sites in Kola Bay to reveal the species composition and structure of feeding habits and the diet of red king crabs. The results of stomach and gut content analyses coupled with calculated Ivlev’s indices indicated that 2–5-year-old crabs frequently consumed bivalve mollusks in relative proportions to prey field biomasses. At all sites, juveniles selectively rejected polychaetes. In soft-bottom communities, when the average density of Bivalvia decreased, the crabs showed increased preference for Gastropoda, Crustacea, and Echinodermata. As a result of selective feeding focused on infaunal suspension-feeding mollusks, juvenile red king crabs have altered the structure of benthic communities in the mouth of Kola Bay. Our results may have important implications for evaluating the consequences of the crab introduction and its population management. Article in Journal/Newspaper Barents Sea Kola Bay Paralithodes camtschaticus Red king crab Directory of Open Access Journals: DOAJ Articles Barents Sea Diversity 14 7 568 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
red king crab Paralithodes camtschaticus dietary composition benthos feeding selectivity Kola Bay Biology (General) QH301-705.5 |
spellingShingle |
red king crab Paralithodes camtschaticus dietary composition benthos feeding selectivity Kola Bay Biology (General) QH301-705.5 Lyudmila V. Pavlova Alexander G. Dvoretsky Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
topic_facet |
red king crab Paralithodes camtschaticus dietary composition benthos feeding selectivity Kola Bay Biology (General) QH301-705.5 |
description |
The invasive red king crab, Paralithodes camtschaticus , has become an abundant and important component in the food web of the coastal Barents Sea and can affect the structure and functioning of the local benthic communities through competition and predation. Although dietary composition and feeding behavior of the crab have been intensively studied, prey selectivity in this species under natural conditions remains poorly defined. For this reason, juvenile red king crabs and benthic samples were collected simultaneously at five coastal sites in Kola Bay to reveal the species composition and structure of feeding habits and the diet of red king crabs. The results of stomach and gut content analyses coupled with calculated Ivlev’s indices indicated that 2–5-year-old crabs frequently consumed bivalve mollusks in relative proportions to prey field biomasses. At all sites, juveniles selectively rejected polychaetes. In soft-bottom communities, when the average density of Bivalvia decreased, the crabs showed increased preference for Gastropoda, Crustacea, and Echinodermata. As a result of selective feeding focused on infaunal suspension-feeding mollusks, juvenile red king crabs have altered the structure of benthic communities in the mouth of Kola Bay. Our results may have important implications for evaluating the consequences of the crab introduction and its population management. |
format |
Article in Journal/Newspaper |
author |
Lyudmila V. Pavlova Alexander G. Dvoretsky |
author_facet |
Lyudmila V. Pavlova Alexander G. Dvoretsky |
author_sort |
Lyudmila V. Pavlova |
title |
Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
title_short |
Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
title_full |
Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
title_fullStr |
Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
title_full_unstemmed |
Prey Selectivity in Juvenile Red King Crabs from the Coastal Barents Sea |
title_sort |
prey selectivity in juvenile red king crabs from the coastal barents sea |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/d14070568 https://doaj.org/article/b1fb7f4bce964fb19c757759afba6a0d |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Kola Bay Paralithodes camtschaticus Red king crab |
genre_facet |
Barents Sea Kola Bay Paralithodes camtschaticus Red king crab |
op_source |
Diversity, Vol 14, Iss 7, p 568 (2022) |
op_relation |
https://www.mdpi.com/1424-2818/14/7/568 https://doaj.org/toc/1424-2818 doi:10.3390/d14070568 1424-2818 https://doaj.org/article/b1fb7f4bce964fb19c757759afba6a0d |
op_doi |
https://doi.org/10.3390/d14070568 |
container_title |
Diversity |
container_volume |
14 |
container_issue |
7 |
container_start_page |
568 |
_version_ |
1787423369285599232 |