Parasites in Antarctic krill guts inferred from DNA sequences
Abstract The keystone role of Antarctic krill, Euphausia superba Dana, in Southern Ocean ecosystems, means it is essential to understand the factors controlling their abundance and secondary production. One such factor that remains poorly known is the role of parasites. A recent study of krill diet...
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crcambridgeupr:10.1017/s0954102018000469 2024-03-03T08:38:31+00:00 Parasites in Antarctic krill guts inferred from DNA sequences Cleary, Alison C. Casas, Maria C. Durbin, Edward G. Gómez-Gutiérrez, Jaime 2019 http://dx.doi.org/10.1017/s0954102018000469 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000469 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms Antarctic Science volume 31, issue 1, page 16-22 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2019 crcambridgeupr https://doi.org/10.1017/s0954102018000469 2024-02-08T08:40:48Z Abstract The keystone role of Antarctic krill, Euphausia superba Dana, in Southern Ocean ecosystems, means it is essential to understand the factors controlling their abundance and secondary production. One such factor that remains poorly known is the role of parasites. A recent study of krill diet using DNA analysis of gut contents provided a snapshot of the parasites present within 170 E. superba guts in a small area along the West Antarctic Peninsula. These parasites included Metschnikowia spp. fungi, Haptoglossa sp. peronosporomycetes, Lankesteria and Paralecudina spp. apicomplexa, Stegophorus sp. nematodes, and Pseudocollinia spp. ciliates. Of these parasites, Metschnikowia spp. fungi and Pseudocollinia spp. ciliates had previously been observed in E. superba , as had other genera of apicomplexans, though not Lankesteria and Paralecudina. In contrast, nematodes had previously only been observed in eggs of E. superba , and there are no literature reports of peronosporomycetes in euphausiids. Pseudocollinia spp., parasitoids which obligately kill their host, were the most frequently observed infection, with a prevalence of 12%. The wide range of observed parasites and the relatively high frequency of infections suggest parasites may play a more important role than previously acknowledged in E. superba ecology and population dynamics. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctic Science Euphausia superba Southern Ocean Cambridge University Press Antarctic Southern Ocean Antarctic Peninsula Antarctic Science 31 1 16 22 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Cleary, Alison C. Casas, Maria C. Durbin, Edward G. Gómez-Gutiérrez, Jaime Parasites in Antarctic krill guts inferred from DNA sequences |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The keystone role of Antarctic krill, Euphausia superba Dana, in Southern Ocean ecosystems, means it is essential to understand the factors controlling their abundance and secondary production. One such factor that remains poorly known is the role of parasites. A recent study of krill diet using DNA analysis of gut contents provided a snapshot of the parasites present within 170 E. superba guts in a small area along the West Antarctic Peninsula. These parasites included Metschnikowia spp. fungi, Haptoglossa sp. peronosporomycetes, Lankesteria and Paralecudina spp. apicomplexa, Stegophorus sp. nematodes, and Pseudocollinia spp. ciliates. Of these parasites, Metschnikowia spp. fungi and Pseudocollinia spp. ciliates had previously been observed in E. superba , as had other genera of apicomplexans, though not Lankesteria and Paralecudina. In contrast, nematodes had previously only been observed in eggs of E. superba , and there are no literature reports of peronosporomycetes in euphausiids. Pseudocollinia spp., parasitoids which obligately kill their host, were the most frequently observed infection, with a prevalence of 12%. The wide range of observed parasites and the relatively high frequency of infections suggest parasites may play a more important role than previously acknowledged in E. superba ecology and population dynamics. |
format |
Article in Journal/Newspaper |
author |
Cleary, Alison C. Casas, Maria C. Durbin, Edward G. Gómez-Gutiérrez, Jaime |
author_facet |
Cleary, Alison C. Casas, Maria C. Durbin, Edward G. Gómez-Gutiérrez, Jaime |
author_sort |
Cleary, Alison C. |
title |
Parasites in Antarctic krill guts inferred from DNA sequences |
title_short |
Parasites in Antarctic krill guts inferred from DNA sequences |
title_full |
Parasites in Antarctic krill guts inferred from DNA sequences |
title_fullStr |
Parasites in Antarctic krill guts inferred from DNA sequences |
title_full_unstemmed |
Parasites in Antarctic krill guts inferred from DNA sequences |
title_sort |
parasites in antarctic krill guts inferred from dna sequences |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/s0954102018000469 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000469 |
geographic |
Antarctic Southern Ocean Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctic Science Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctic Science Euphausia superba Southern Ocean |
op_source |
Antarctic Science volume 31, issue 1, page 16-22 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102018000469 |
container_title |
Antarctic Science |
container_volume |
31 |
container_issue |
1 |
container_start_page |
16 |
op_container_end_page |
22 |
_version_ |
1792506906073366528 |