Gut Microbiota of Zebra Mussels (Dreissena polymorpha) as a Holobiont Concept- Significantly Reliable Method for Aquatic Environment Monitoring? - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 2024

Gut Microbiota of Zebra Mussels (Dreissena polymorpha) as a Holobiont Concept- Significantly Reliable Method for Aquatic Environment Monitoring?

Résumé

France's Water bodies are constantly exposed to emerging pollutants from urban areas. It requires constant monitoring of contamination. Zebra mussel (ZM) is an invasive species which is spread in European waters extensively. They are filter feeders that filter a large amount of water as its food source. They process and remove a high number of microorganisms (MO). ZM accumulate compounds from the water column and is an excellent indicator of the surrounding environment. The filtration process allows ZMs to absorb naturally occurring mixtures and pollutants. ZM's gut microbiota (GM) contains a high number of MO and creates a specific symbiosis with the host. It is closely connected to the outside environment and represents aquatic conditions. It shows the importance of holobiont symbiosis and its need for detailed understanding. This study investigates the GM of ZM as an indicator of emerging contaminants such as human pathogens and antibiotics resistance bacteria (ARB). The inquiry is how GM is affected by variations of diet, pathogens and contaminants appearing in aquatic environments and the overall understanding of the gut microbiota of ZMs and its essence in the accumulation of increasing quantities of pathogens and ARB. ZMs were collected in the field and let acclimated before following steps. After the acclimation period, the field investigation selected ZMs were transferred to appointed sites and put into specially created devices for collecting faeces. The rest of the ZMs were kept in laboratory conditions to further study their gastrointestinal microbiota. Further analysis will be performed by 16S rDNA sequencing and cultivation. The experiment combines laboratory-controlled conditions and field experiments. Obtaining data from different feeding conditions, filtration rates and the overall effect of the laboratory and field environment and possible accumulation of pathogens and ARB from the field is critical for further study. Testing of water bodies can be more reliable with ZMs accumulation of contaminants with comparison to regular grab water samples depending on many factors. This study emphasises the importance of the microbiota of filter feeders and their ability to accumulate compounds from the water.
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Dates et versions

hal-04562928 , version 1 (29-04-2024)

Identifiants

  • HAL Id : hal-04562928 , version 1

Citer

Katerina Fialova, Pascal Poupin, Fanny Louis, Laetitia Minguez, Marie Zaffino, et al.. Gut Microbiota of Zebra Mussels (Dreissena polymorpha) as a Holobiont Concept- Significantly Reliable Method for Aquatic Environment Monitoring?. SETAC, May 2024, Sevilla (Spain), Spain. ⟨hal-04562928⟩
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