Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types
SUMMARY Parvicapsula minibicornis is a myxozoan parasite implicated in mortalities of both juvenile and pre-spawning adult salmon in the Pacific Northwest of North America. Disease severity and presentation varies between salmon species and geographical localities. To better characterize population...
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crcambridgeupr:10.1017/s0031182011000734 2024-06-23T07:56:13+00:00 Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types ATKINSON, STEPHEN D. JONES, SIMON R. M. ADLARD, ROBERT D. BARTHOLOMEW, JERRI L. 2011 http://dx.doi.org/10.1017/s0031182011000734 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011000734 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 138, issue 8, page 969-977 ISSN 0031-1820 1469-8161 journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0031182011000734 2024-05-29T08:07:22Z SUMMARY Parvicapsula minibicornis is a myxozoan parasite implicated in mortalities of both juvenile and pre-spawning adult salmon in the Pacific Northwest of North America. Disease severity and presentation varies between salmon species and geographical localities. To better characterize population structure of the parasite, we sought genetic markers in the P. minibicornis ribosomal RNA gene. We compared samples from California with the type specimen from British Columbia, identified sequence variations, and then sequenced 197 samples from fish, river water and the parasite's polychaete worm host. Although DNA sequences of the parasite were >98·9% similar, there was enough variation to define 15 genotypes. All genotypes were detected in fish samples, although not in all species. A single genotype only was found in sockeye and pink salmon in the Fraser River Basin, but was not detected in sockeye from the adjacent Columbia River Basin. All coho salmon, irrespective of river basin, were infected with a unique mix of 2 genotypes. These data indicated that the P. minibicornis population exhibited strong signals of structuring by both geography and salmonid host species. Particular genotypes may correlate with disease differences seen in salmon populations in the Pacific Northwest. Article in Journal/Newspaper Pink salmon Cambridge University Press Fraser River ENVELOPE(-62.243,-62.243,56.619,56.619) Pacific Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Parasitology 138 8 969 977 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
SUMMARY Parvicapsula minibicornis is a myxozoan parasite implicated in mortalities of both juvenile and pre-spawning adult salmon in the Pacific Northwest of North America. Disease severity and presentation varies between salmon species and geographical localities. To better characterize population structure of the parasite, we sought genetic markers in the P. minibicornis ribosomal RNA gene. We compared samples from California with the type specimen from British Columbia, identified sequence variations, and then sequenced 197 samples from fish, river water and the parasite's polychaete worm host. Although DNA sequences of the parasite were >98·9% similar, there was enough variation to define 15 genotypes. All genotypes were detected in fish samples, although not in all species. A single genotype only was found in sockeye and pink salmon in the Fraser River Basin, but was not detected in sockeye from the adjacent Columbia River Basin. All coho salmon, irrespective of river basin, were infected with a unique mix of 2 genotypes. These data indicated that the P. minibicornis population exhibited strong signals of structuring by both geography and salmonid host species. Particular genotypes may correlate with disease differences seen in salmon populations in the Pacific Northwest. |
format |
Article in Journal/Newspaper |
author |
ATKINSON, STEPHEN D. JONES, SIMON R. M. ADLARD, ROBERT D. BARTHOLOMEW, JERRI L. |
spellingShingle |
ATKINSON, STEPHEN D. JONES, SIMON R. M. ADLARD, ROBERT D. BARTHOLOMEW, JERRI L. Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
author_facet |
ATKINSON, STEPHEN D. JONES, SIMON R. M. ADLARD, ROBERT D. BARTHOLOMEW, JERRI L. |
author_sort |
ATKINSON, STEPHEN D. |
title |
Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
title_short |
Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
title_full |
Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
title_fullStr |
Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
title_full_unstemmed |
Geographical and host distribution patterns of Parvicapsula minibicornis (Myxozoa) small subunit ribosomal RNA genetic types |
title_sort |
geographical and host distribution patterns of parvicapsula minibicornis (myxozoa) small subunit ribosomal rna genetic types |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0031182011000734 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011000734 |
long_lat |
ENVELOPE(-62.243,-62.243,56.619,56.619) ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Fraser River Pacific Sockeye |
geographic_facet |
Fraser River Pacific Sockeye |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Parasitology volume 138, issue 8, page 969-977 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182011000734 |
container_title |
Parasitology |
container_volume |
138 |
container_issue |
8 |
container_start_page |
969 |
op_container_end_page |
977 |
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1802649182159241216 |