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Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)

The extent to which commercially important Nephrops norvegicus lobsters feed on particulates in the wild is unknown, even though this could be an important way for burrow-dwelling females to avoid starvation during the long breeding season. This was investigated using δ(13)C and δ(15)N isotopic sign...

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Autores principales: Santana, Cesar Augusto da Silva, Wieczorek, Alina M., Browne, Patricia, Graham, Conor T., Power, Anne Marie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7042260/
https://www.ncbi.nlm.nih.gov/pubmed/32099047
http://dx.doi.org/10.1038/s41598-020-60367-x
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author Santana, Cesar Augusto da Silva
Wieczorek, Alina M.
Browne, Patricia
Graham, Conor T.
Power, Anne Marie
author_facet Santana, Cesar Augusto da Silva
Wieczorek, Alina M.
Browne, Patricia
Graham, Conor T.
Power, Anne Marie
author_sort Santana, Cesar Augusto da Silva
collection PubMed
description The extent to which commercially important Nephrops norvegicus lobsters feed on particulates in the wild is unknown, even though this could be an important way for burrow-dwelling females to avoid starvation during the long breeding season. This was investigated using δ(13)C and δ(15)N isotopic signatures in tissues with long and short turnover rates to provide diet discrimination and compare this between males and females. Secondary objectives examined size-related differences and calculated the trophic position based on the new results. Almost half the diet (47%) was made up of suspended particulate organic matter (POM(susp)) alone. Fish was another important item in the diet, with plankton and invertebrate sources coming much lower down in dietary importance. Significantly more suspension feeding was observed in small or medium sized individuals than large ones in both sexes. However, there were no sex-related patterns, despite females being restricted to burrows for part of the analysis period. Female diet was almost identical to males and POM(susp) comprised a large component of the diet in both sexes. The trophic position was estimated at 2.94 ± 0.16 (mean ± SD), which was at the lower end of the range reported in previous studies (2.60 to 4.32).
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spelling pubmed-70422602020-03-03 Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758) Santana, Cesar Augusto da Silva Wieczorek, Alina M. Browne, Patricia Graham, Conor T. Power, Anne Marie Sci Rep Article The extent to which commercially important Nephrops norvegicus lobsters feed on particulates in the wild is unknown, even though this could be an important way for burrow-dwelling females to avoid starvation during the long breeding season. This was investigated using δ(13)C and δ(15)N isotopic signatures in tissues with long and short turnover rates to provide diet discrimination and compare this between males and females. Secondary objectives examined size-related differences and calculated the trophic position based on the new results. Almost half the diet (47%) was made up of suspended particulate organic matter (POM(susp)) alone. Fish was another important item in the diet, with plankton and invertebrate sources coming much lower down in dietary importance. Significantly more suspension feeding was observed in small or medium sized individuals than large ones in both sexes. However, there were no sex-related patterns, despite females being restricted to burrows for part of the analysis period. Female diet was almost identical to males and POM(susp) comprised a large component of the diet in both sexes. The trophic position was estimated at 2.94 ± 0.16 (mean ± SD), which was at the lower end of the range reported in previous studies (2.60 to 4.32). Nature Publishing Group UK 2020-02-25 /pmc/articles/PMC7042260/ /pubmed/32099047 http://dx.doi.org/10.1038/s41598-020-60367-x Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Santana, Cesar Augusto da Silva
Wieczorek, Alina M.
Browne, Patricia
Graham, Conor T.
Power, Anne Marie
Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title_full Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title_fullStr Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title_full_unstemmed Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title_short Importance of suspended particulate organic matter in the diet of Nephrops norvegicus (Linnaeus, 1758)
title_sort importance of suspended particulate organic matter in the diet of nephrops norvegicus (linnaeus, 1758)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7042260/
https://www.ncbi.nlm.nih.gov/pubmed/32099047
http://dx.doi.org/10.1038/s41598-020-60367-x
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