Integration of environmental signatures and omics-based approaches on the European flounder to assist with health assessment of estuarine ecosystems in Brittany, France

Laurent, Jennifer; Berre, Iwan Le; Armengaud, Jean; Kailasam, Senthilkumar; Couteau, Jérôme; Waeles, Matthieu; Floch, Stéphane Le; Laroche, Jean; Pichereau, Vianney

doi:10.1016/j.scitotenv.2023.163195

Cited by 3 publications

(2 citation statements)

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“…After the switch from planktonic to piscivorous nutrition within the rst year [22], O. eperlanus becomes the preferred prey for zander in the Elbe estuary [23]. The summer period is characterized by intensive growth (16 ± 2 cm) with high metabolic activity susceptible to be altered by multiple stressors [24]. Despite a well-found knowledge of the abiotic and biotic changes occurring within the estuary, many spatio-temporal factors, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Real-world omics studies indicate molecular mechanisms used by sh to cope with adverse effects of multi-stress environment. Reversely they inform about the environmental conditions themselves allowing identi cation of unexpected stressors as shown in recent studies on range expansion in invasive species [29] or xenobiotic response in estuarine ounder [24].…”

Section: Introductionmentioning

confidence: 99%

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Network-based integration of omics, physiological and environmental data in real-world Elbe estuarine Zander

Koll,

Theilen,

Hauten

et al. 2024

Preprint

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Coastal and estuarine environments are under endogenic and exogenic pressures jeopardizing survival and diversity of inhabiting biota. Information of possible synergistic effects of multiple (a)biotic stressors and holobiont interaction are largely missing in the Elbe estuary but are of importance to estimate unforeseen effects on animals’ physiology. Here, we seek to leverage host-transcriptional RNA-seq and gill mucus microbial 16S rRNA metabarcoding data coupled with physiological and abiotic measurements in a network analysis approach to deconvolute the impact of multiple stressors on the health of juvenile Sander lucioperca along one of the largest European estuaries. We find mesohaline areas characterized by gill tissue specific transcriptional responses matching osmosensing and tissue remodeling. Liver transcriptomes instead emphasized that zander from highly turbid areas were undergoing starvation which was supported by compromised body condition. Potential pathogenic bacteria, including Shewanella, Acinetobacter, Aeromonas and Chryseobacterium, dominated the gill microbiome along the freshwater transition and oxygen minimum zone. Their occurrence coincided with a strong adaptive and innate transcriptional immune response in host gill and enhanced energy demand in liver tissue supporting their potential pathogenicity. Overall, we demonstrate the information gain from integration of omics data into biomonitoring of fish and point out bacterial species with disease potential.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%