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Health status of Mytilus chilensis from intensive culture areas in Chile assessed by molecular, microbiological, and histological analyses
Santibáñez, P.; Romalde, J.; Fuentes, D.; Figueras, A.; Figueroa, J. (2022). Health status of Mytilus chilensis from intensive culture areas in Chile assessed by molecular, microbiological, and histological analyses. Pathogens 11(5): 494. https://dx.doi.org/10.3390/pathogens11050494
In: Pathogens. MDPI: Basel. e-ISSN 2076-0817
|   |
| Trefwoorden |
Mytilus chilensis Hupé, 1854 [WoRMS]
Marien/Kust |
| Author keywords |
mussel; aquaculture; pathogens; eukaryotic communities; 18S rDNA |
| Auteurs | | Top |
- Santibáñez, P.
- Romalde, J.
- Fuentes, D.
|
- Figueras, A.
- Figueroa, J.
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|
| Abstract |
Shellfish farming is a relevant economic activity in Chile, where the inner sea in Chiloé island concentrates 99% of the production of the mussel Mytilus chilensis. This area is characterized by the presence of numerous human activities, which could harm the quality of seawater. Additionally, the presence of potentially pathogenic microorganisms can influence the health status of mussels, which must be constantly monitored. To have a clear viewpoint of the health status of M. chilensis and to study its potential as a host species for exotic diseases, microbiological, molecular, and histological analyses were performed. This study was carried out in October 2018, where M. chilensis gut were studied for: presence of food-borne bacteria (Vibrio parahaemolyticus, Escherichia coli, Salmonella spp.), exotic bacteria (“Candidatus Xenohaliotis californiensis”), viruses (abalone and Ostreid herpes virus), and protozoa (Marteilia spp., Perkinsus spp. and Bonamia spp.). Additionally, 18S rDNA metabarcoding and histology analyses were included to have a complete evaluation of the health status of M. chilensis. Overall, despite the presence of risk factors, abnormal mortality rates were not reported during the monitoring period and the histological examination did not reveal significant lesions. Pathogens of mandatory notification to World Organization for Animal Health (OIE) and the Chilean National Fisheries and Aquaculture Service (SERNAPESCA) were not detected, which confirms that M. chilensis have a good health status, highlighting the importance of an integrated vision of different disciplines to ensure the sustainability of this important mussel industry in Chile. |
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