Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts
Marine diseases represent a significant threat to wild organisms and the ecosystem services they support, yet studies often consider only disease impacts to aquaculture. In eastern Australia, the Sydney rock oyster (Saccostrea glomerata) aquaculture industry is increasingly affected by outbreaks of...
Published in: | Marine and Freshwater Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
C S I R O Publishing
2013
|
Subjects: | |
Online Access: | https://doi.org/10.1071/MF13010 |
id |
ftunivscoast:usc:22417 |
---|---|
record_format |
openpolar |
spelling |
ftunivscoast:usc:22417 2023-05-15T15:58:46+02:00 Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts Wilkie, E M Bishop, M J O'Connor, W A McPherson, R G 2013 https://doi.org/10.1071/MF13010 eng eng C S I R O Publishing usc:22417 URN:ISSN: 1323-1650 FoR multidisciplinary bivalve intertidal invasive species rocky shore Journal Article 2013 ftunivscoast https://doi.org/10.1071/MF13010 2018-07-29T23:53:21Z Marine diseases represent a significant threat to wild organisms and the ecosystem services they support, yet studies often consider only disease impacts to aquaculture. In eastern Australia, the Sydney rock oyster (Saccostrea glomerata) aquaculture industry is increasingly affected by outbreaks of QX disease caused by parasitic Marteilia sydneyi. The present study considered impacts of M. sydneyi infection on the structure of wild-oyster populations that are dominated by S. glomerata, but that may also include the non-native Pacific oyster, Crassostrea gigas. In the Hawkesbury River Estuary, where cultured S. glomerata has experienced up to 98% QX-induced mortality, we found that disease prevalence was comparatively low among wild S. glomerata, peaking at 14%, and annual infections did not cause seasonal patterns of mortality. Furthermore, C. gigas, a competitor of S. glomerata that is not susceptible to QX disease, was not consistently more abundant at sites with than without the parasite. Overall, our results indicated that relative to cultured counterparts, wild S. glomerata in the Hawkesbury River Estuary is minimally affected by QX disease. Nevertheless, our study showed that diseases of aquaculture stocks have the capacity to infect wild populations, and that longer-term assessment of wild populations at risk is essential. © CSIRO 2013. Article in Journal/Newspaper Crassostrea gigas Pacific oyster University of the Sunshine Coast, Queensland, Australia: COAST Research Database Pacific Marine and Freshwater Research 64 3 267 |
institution |
Open Polar |
collection |
University of the Sunshine Coast, Queensland, Australia: COAST Research Database |
op_collection_id |
ftunivscoast |
language |
English |
topic |
FoR multidisciplinary bivalve intertidal invasive species rocky shore |
spellingShingle |
FoR multidisciplinary bivalve intertidal invasive species rocky shore Wilkie, E M Bishop, M J O'Connor, W A McPherson, R G Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
topic_facet |
FoR multidisciplinary bivalve intertidal invasive species rocky shore |
description |
Marine diseases represent a significant threat to wild organisms and the ecosystem services they support, yet studies often consider only disease impacts to aquaculture. In eastern Australia, the Sydney rock oyster (Saccostrea glomerata) aquaculture industry is increasingly affected by outbreaks of QX disease caused by parasitic Marteilia sydneyi. The present study considered impacts of M. sydneyi infection on the structure of wild-oyster populations that are dominated by S. glomerata, but that may also include the non-native Pacific oyster, Crassostrea gigas. In the Hawkesbury River Estuary, where cultured S. glomerata has experienced up to 98% QX-induced mortality, we found that disease prevalence was comparatively low among wild S. glomerata, peaking at 14%, and annual infections did not cause seasonal patterns of mortality. Furthermore, C. gigas, a competitor of S. glomerata that is not susceptible to QX disease, was not consistently more abundant at sites with than without the parasite. Overall, our results indicated that relative to cultured counterparts, wild S. glomerata in the Hawkesbury River Estuary is minimally affected by QX disease. Nevertheless, our study showed that diseases of aquaculture stocks have the capacity to infect wild populations, and that longer-term assessment of wild populations at risk is essential. © CSIRO 2013. |
format |
Article in Journal/Newspaper |
author |
Wilkie, E M Bishop, M J O'Connor, W A McPherson, R G |
author_facet |
Wilkie, E M Bishop, M J O'Connor, W A McPherson, R G |
author_sort |
Wilkie, E M |
title |
Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
title_short |
Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
title_full |
Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
title_fullStr |
Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
title_full_unstemmed |
Status of the Sydney rock oyster in a disease-afflicted estuary: Persistence of wild populations despite severe impacts on cultured counterparts |
title_sort |
status of the sydney rock oyster in a disease-afflicted estuary: persistence of wild populations despite severe impacts on cultured counterparts |
publisher |
C S I R O Publishing |
publishDate |
2013 |
url |
https://doi.org/10.1071/MF13010 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
usc:22417 URN:ISSN: 1323-1650 |
op_doi |
https://doi.org/10.1071/MF13010 |
container_title |
Marine and Freshwater Research |
container_volume |
64 |
container_issue |
3 |
container_start_page |
267 |
_version_ |
1766394531172843520 |