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Integrating complementary methods to improve diet analysis in fishery‐targeted species
Developing efficient, reliable, cost‐effective ways to identify diet is required to understand trophic ecology in complex ecosystems and improve food web models. A combination of techniques, each varying in their ability to provide robust, spatially and temporally explicit information can be applied...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6194329/ https://www.ncbi.nlm.nih.gov/pubmed/30377518 http://dx.doi.org/10.1002/ece3.4456 |
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author | Matley, Jordan K. Maes, Gregory E. Devloo‐Delva, Floriaan Huerlimann, Roger Chua, Gladys Tobin, Andrew J. Fisk, Aaron T. Simpfendorfer, Colin A. Heupel, Michelle R. |
author_facet | Matley, Jordan K. Maes, Gregory E. Devloo‐Delva, Floriaan Huerlimann, Roger Chua, Gladys Tobin, Andrew J. Fisk, Aaron T. Simpfendorfer, Colin A. Heupel, Michelle R. |
author_sort | Matley, Jordan K. |
collection | PubMed |
description | Developing efficient, reliable, cost‐effective ways to identify diet is required to understand trophic ecology in complex ecosystems and improve food web models. A combination of techniques, each varying in their ability to provide robust, spatially and temporally explicit information can be applied to clarify diet data for ecological research. This study applied an integrative analysis of a fishery‐targeted species group—Plectropomus spp. in the central Great Barrier Reef, Australia, by comparing three diet‐identification approaches. Visual stomach content analysis provided poor identification with ~14% of stomachs sampled resulting in identification to family or lower. A molecular approach was successful with prey from ~80% of stomachs identified to genus or species, often with several unique prey in a stomach. Stable isotope mixing models utilizing experimentally derived assimilation data, identified similar prey as the molecular technique but at broader temporal scales, particularly when prior diet information was incorporated. Overall, Caesionidae and Pomacentridae were the most abundant prey families (>50% prey contribution) for all Plectropomus spp., highlighting the importance of planktivorous prey. Less abundant prey categories differed among species/color phases indicating possible niche segregation. This study is one of the first to demonstrate the extent of taxonomic resolution provided by molecular techniques, and, like other studies, illustrates that temporal investigations of dietary patterns are more accessible in combination with stable isotopes. The consumption of mainly planktivorous prey within this species group has important implications within coral reef food webs and provides cautionary information regarding the effects that changing resources could have in reef ecosystems. |
format | Online Article Text |
id | pubmed-6194329 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-61943292018-10-30 Integrating complementary methods to improve diet analysis in fishery‐targeted species Matley, Jordan K. Maes, Gregory E. Devloo‐Delva, Floriaan Huerlimann, Roger Chua, Gladys Tobin, Andrew J. Fisk, Aaron T. Simpfendorfer, Colin A. Heupel, Michelle R. Ecol Evol Original Research Developing efficient, reliable, cost‐effective ways to identify diet is required to understand trophic ecology in complex ecosystems and improve food web models. A combination of techniques, each varying in their ability to provide robust, spatially and temporally explicit information can be applied to clarify diet data for ecological research. This study applied an integrative analysis of a fishery‐targeted species group—Plectropomus spp. in the central Great Barrier Reef, Australia, by comparing three diet‐identification approaches. Visual stomach content analysis provided poor identification with ~14% of stomachs sampled resulting in identification to family or lower. A molecular approach was successful with prey from ~80% of stomachs identified to genus or species, often with several unique prey in a stomach. Stable isotope mixing models utilizing experimentally derived assimilation data, identified similar prey as the molecular technique but at broader temporal scales, particularly when prior diet information was incorporated. Overall, Caesionidae and Pomacentridae were the most abundant prey families (>50% prey contribution) for all Plectropomus spp., highlighting the importance of planktivorous prey. Less abundant prey categories differed among species/color phases indicating possible niche segregation. This study is one of the first to demonstrate the extent of taxonomic resolution provided by molecular techniques, and, like other studies, illustrates that temporal investigations of dietary patterns are more accessible in combination with stable isotopes. The consumption of mainly planktivorous prey within this species group has important implications within coral reef food webs and provides cautionary information regarding the effects that changing resources could have in reef ecosystems. John Wiley and Sons Inc. 2018-08-29 /pmc/articles/PMC6194329/ /pubmed/30377518 http://dx.doi.org/10.1002/ece3.4456 Text en © 2018 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Matley, Jordan K. Maes, Gregory E. Devloo‐Delva, Floriaan Huerlimann, Roger Chua, Gladys Tobin, Andrew J. Fisk, Aaron T. Simpfendorfer, Colin A. Heupel, Michelle R. Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title | Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title_full | Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title_fullStr | Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title_full_unstemmed | Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title_short | Integrating complementary methods to improve diet analysis in fishery‐targeted species |
title_sort | integrating complementary methods to improve diet analysis in fishery‐targeted species |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6194329/ https://www.ncbi.nlm.nih.gov/pubmed/30377518 http://dx.doi.org/10.1002/ece3.4456 |
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