Partitioning the environmental drivers of immunocompetence

Jackson, Joseph A.; Friberg, Ida M.; Hablützel, Pascal I.; Masud, Numair; Stewart, Alexander; Synnott, Rebecca; Cable, Joanne

doi:10.1016/j.scitotenv.2020.141152

Cited by 6 publications

(8 citation statements)

References 48 publications

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“…Changes in water temperature have a major impact on teleosts, leading to altered physiology and behavior, 85 – 88 contributing to parasitism resistance and tolerance. 89 We demonstrate here that water temperature oscillation also impacts the composition, structure and function of the skin and gill microbiota of farmed European seabass. In particular, dysbiosis seems to be more frequent in warm months and during cold/warm transitions, and the abundance of several PP genera is also affected by changes in water temperature.…”

Section: Discussionmentioning

confidence: 66%

Longitudinal sampling of external mucosae in farmed European seabass reveals the impact of water temperature on bacterial dynamics

Rosado

Xavier

Cable

et al. 2021

ISME Communications

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Fish microbiota are intrinsically linked to health and fitness, but they are highly variable and influenced by both biotic and abiotic factors. Water temperature particularly limits bacterial adhesion and growth, impacting microbial diversity and bacterial infections on the skin and gills. Aquaculture is heavily affected by infectious diseases, especially in warmer months, and industry practices often promote stress and microbial dysbiosis, leading to an increased abundance of potentially pathogenic bacteria. In this regard, fish mucosa health is extremely important because it provides a primary barrier against pathogens. We used 16 rRNA V4 metataxonomics to characterize the skin and gill microbiota of the European seabass, Dicentrarchus labrax, and the surrounding water over 12 months, assessing the impact of water temperature on microbial diversity and function. We show that the microbiota of external mucosae are highly dynamic with consistent longitudinal trends in taxon diversity. Several potentially pathogenic genera (Aliivibrio, Photobacterium, Pseudomonas, and Vibrio) were highly abundant, showing complex interactions with other bacterial genera, some of which with recognized probiotic activity, and were also significantly impacted by changes in temperature. The surrounding water temperature influenced fish microbial composition, structure and function over time (days and months). Additionally, dysbiosis was more frequent in warmer months and during transitions between cold/warm months. We also detected a strong seasonal effect in the fish microbiota, which is likely to result from the compound action of several unmeasured environmental factors (e.g., pH, nutrient availability) beyond temperature. Our results highlight the importance of performing longitudinal studies to assess the impact of environmental factors on fish microbiotas.

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Section: Discussionmentioning

confidence: 66%

Longitudinal sampling of external mucosae in farmed European seabass reveals the impact of water temperature on bacterial dynamics

Rosado

Xavier

Cable

et al. 2021

ISME Communications

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“…In this context, a recent review has predicted extinction of parasite species, with up to 30% of parasitic worms, resulting from climate driven habitat loss alone (Carlson et al ., 2017). Moreover, the effects of within-habitat climate-driven environmental change on host–parasite systems are also likely to be important (Hudson et al ., 2006; Altizer et al ., 2013; Gethings et al ., 2015; Gehman et al ., 2018; Stewart et al ., 2018 a ,; Jackson et al ., 2020) but this is an area where more empirical evidence is required. Fortunately, the Malham Tarn Study Centre does have a local meteorological station.…”

Section: Discussionmentioning

confidence: 99%

Long-term trends in helminth infections of wood mice (Apodemus sylvaticus) from the vicinity of Malham Tarn in North Yorkshire, England

et al. 2020

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Helminth infections in wood mice (n = 483), trapped over a period of 26 years in the woods surrounding Malham Tarn in North Yorkshire, were analysed. Although 10 species of helminths were identified, the overall mean species richness was 1.01 species/mouse indicating that the helminth community was relatively depauperate in this wood mouse population. The dominant species was Heligmosomoides polygyrus, the prevalence (64.6%) and abundance (10.4 worms/mouse) of which declined significantly over the study period. Because of the dominance of this species, analyses of higher taxa (combined helminths and combined nematodes) also revealed significantly declining values for prevalence, although not abundance. Helminth species richness (HSR) and Brillouin's index of diversity (BID) did not show covariance with year, neither did those remaining species whose overall prevalence exceeded 5% (Syphacia stroma, Aonchotheca murissylvatici and Plagiorchis muris). Significant age effects were detected for the prevalence and abundance of all higher taxa, H. polygyrus and P. muris, and for HSR and BID, reflecting the accumulation of helminths with increasing host age. Only two cases of sex bias were found; male bias in abundance of P. muris and combined Digenea. We discuss the significance of these results and hypothesize about the underlying causes.

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“…Therefore, darker plumage coloration in hot/humid environments could also be a side effect of selection operating on these traits along the temperature/humidity gradient. For instance, it has been shown that parasites can develop more quickly in warm environments (Franke et al, 2017) and that wildlife immunocompetence is higher in hot environments (Jackson et al, 2020). Therefore, the darker plumage coloration in S. webbiana might be attributed to selection for high immunocompetence in high temperatures for better parasite resistance, rather than to selection forces directly operating on plumage color.…”

Section: Conformity To Gloger's Rule In S Webbianamentioning

confidence: 99%

Morphological variations in a widely distributed Eastern Asian passerine cannot be consistently explained by ecogeographic rules

Lee

Yeh

et al. 2021

Ecology and Evolution

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Partitioning the environmental drivers of immunocompetence

Cited by 6 publications

References 48 publications

Longitudinal sampling of external mucosae in farmed European seabass reveals the impact of water temperature on bacterial dynamics

Longitudinal sampling of external mucosae in farmed European seabass reveals the impact of water temperature on bacterial dynamics

Long-term trends in helminth infections of wood mice (Apodemus sylvaticus) from the vicinity of Malham Tarn in North Yorkshire, England

Morphological variations in a widely distributed Eastern Asian passerine cannot be consistently explained by ecogeographic rules

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