Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L.
SUMMARY In order to study the infection dynamics of 2 renal myxozoans, Zschokkella hildae Auerbach, 1910 and Gadimyxa atlantica Køie, Karlsbakk and Nylund, 2007 in cultured Atlantic cod, Gadus morhua L. aged 3–19 months, a specific single-round PCR assay and a double-label in situ hybridization prot...
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crcambridgeupr:10.1017/s0031182010000247 2024-09-15T17:55:26+00:00 Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. HOLZER, A. S. STEWART, S. TILDESLEY, A. WOOTTEN, R. SOMMERVILLE, C. 2010 http://dx.doi.org/10.1017/s0031182010000247 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182010000247 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 137, issue 10, page 1501-1513 ISSN 0031-1820 1469-8161 journal-article 2010 crcambridgeupr https://doi.org/10.1017/s0031182010000247 2024-07-03T04:04:22Z SUMMARY In order to study the infection dynamics of 2 renal myxozoans, Zschokkella hildae Auerbach, 1910 and Gadimyxa atlantica Køie, Karlsbakk and Nylund, 2007 in cultured Atlantic cod, Gadus morhua L. aged 3–19 months, a specific single-round PCR assay and a double-label in situ hybridization protocol were developed. The results demonstrated that the 2 myxozoans show spatial separation of their development with regard to spore formation inside the renal tubules versus the collecting ducts and ureters, as well as temporal separation with Z. hildae proliferating and developing spores only once the G. atlantica infection decreases, despite the presence of both myxozoans in the smallest fry studied. These results strongly suggest within-host competition of the 2 myxozoans with potential suppression of Z. hildae by G. atlantica until G. morhua acquires immunity against G. atlantica . The quantification of the G. atlantica infection inside the renal tubules before and after a 29-day experimental growth performance study using fry from hatcheries with differing filtration systems showed that the intensity of infection with G. atlantica seems to be controlled if prolonged exposure to the myxozoan transmission stages takes place from hatching onwards. Surprisingly, growth rates in the trial were inversely affected suggesting that G. atlantica does not negatively influence cod fry growth performance. Article in Journal/Newspaper atlantic cod Gadus morhua Cambridge University Press Parasitology 137 10 1501 1513 |
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Open Polar |
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Cambridge University Press |
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language |
English |
description |
SUMMARY In order to study the infection dynamics of 2 renal myxozoans, Zschokkella hildae Auerbach, 1910 and Gadimyxa atlantica Køie, Karlsbakk and Nylund, 2007 in cultured Atlantic cod, Gadus morhua L. aged 3–19 months, a specific single-round PCR assay and a double-label in situ hybridization protocol were developed. The results demonstrated that the 2 myxozoans show spatial separation of their development with regard to spore formation inside the renal tubules versus the collecting ducts and ureters, as well as temporal separation with Z. hildae proliferating and developing spores only once the G. atlantica infection decreases, despite the presence of both myxozoans in the smallest fry studied. These results strongly suggest within-host competition of the 2 myxozoans with potential suppression of Z. hildae by G. atlantica until G. morhua acquires immunity against G. atlantica . The quantification of the G. atlantica infection inside the renal tubules before and after a 29-day experimental growth performance study using fry from hatcheries with differing filtration systems showed that the intensity of infection with G. atlantica seems to be controlled if prolonged exposure to the myxozoan transmission stages takes place from hatching onwards. Surprisingly, growth rates in the trial were inversely affected suggesting that G. atlantica does not negatively influence cod fry growth performance. |
format |
Article in Journal/Newspaper |
author |
HOLZER, A. S. STEWART, S. TILDESLEY, A. WOOTTEN, R. SOMMERVILLE, C. |
spellingShingle |
HOLZER, A. S. STEWART, S. TILDESLEY, A. WOOTTEN, R. SOMMERVILLE, C. Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
author_facet |
HOLZER, A. S. STEWART, S. TILDESLEY, A. WOOTTEN, R. SOMMERVILLE, C. |
author_sort |
HOLZER, A. S. |
title |
Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
title_short |
Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
title_full |
Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
title_fullStr |
Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
title_full_unstemmed |
Infection dynamics of two renal myxozoans in hatchery reared fry and juvenile Atlantic cod Gadus morhua L. |
title_sort |
infection dynamics of two renal myxozoans in hatchery reared fry and juvenile atlantic cod gadus morhua l. |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1017/s0031182010000247 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182010000247 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Parasitology volume 137, issue 10, page 1501-1513 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182010000247 |
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Parasitology |
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137 |
container_issue |
10 |
container_start_page |
1501 |
op_container_end_page |
1513 |
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1810431722699882496 |