Jellyfish detritus supports niche partitioning and metabolic interactions among pelagic marine bacteria

Microbiome, Journal Year: 2023, Volume and Issue: 11(1)

Published: July 21, 2023

Jellyfish blooms represent a significant but largely overlooked source of labile organic matter (jelly-OM) in the ocean, characterized by high protein content. Decaying jellyfish are important carriers for carbon export to ocean's interior. To accurately incorporate them into biogeochemical models, interactions between microbes and jelly-OM have yet be fully characterized. We conducted enrichment experiments microcosms simulate scenario experienced coastal pelagic microbiome after decay bloom. combined metagenomics, endo- exo-metaproteomic approaches obtain mechanistic understanding on metabolic network operated degrading bacterial consortium.Our analysis revealed that OM released during triggers rapid shuffling taxonomic functional profile community, resulting protein/amino acid catabolism-related enzymes community dominated Pseudoalteromonadaceae, Alteromonadaceae Vibrionaceae, compared unamended control treatments. In accordance with proteinaceous character jelly-OM, Pseudoalteromonadaceae synthesized excreted associated proteolysis, while contributed extracellular hydrolysis complex carbohydrates organophosphorus compounds. contrast, Vibrionaceae transporter proteins peptides, amino acids carbohydrates, exhibiting cheater-type lifestyle, i.e. benefiting from public goods others. late stage degradation, Rhodobacteraceae became dominant, growing left-overs or debris, potentially contributing accumulation dissolved nitrogen compounds inorganic nutrients, following blooms.Our findings indicate specific chemical fingerprints decaying substantially different those previously phytoplankton blooms, altering functioning biogeochemistry marine systems. show collagenolytic proteases, which could act as virulence factors human organisms' disease, possible implications ecosystem services. Our study also provides novel insights niche partitioning among key degraders operating temporal cascade biochemical reactions degrade pulses jellyfish-bloom-specific water column. Video Abstract.

Language: Английский

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Review of jellyfish trophic interactions in the Baltic Sea

Marine Biology Research, Journal Year: 2021, Volume and Issue: 17(4), P. 311 - 326

Published: April 21, 2021

Despite the diversity and oftentimes large biomass of jellyfish in marine systems, their ecological role remains poorly understood. We here provide first systematic review studies on trophic ecology Baltic Sea (a regional system under strong multiple global anthropogenic pressures). In total, we identified 57 peer-reviewed publications, with notable taxonomic bias towards two species (Aurelia aurita; non-indigenous Mnemiopsis leidyi) spatial five areas (Bornholm Basin, Kiel Bight, Kertinge Nor, Lim- Gullmarsfjord). The evidence for diverse roles as predators competitors other jellyfish, zooplankton fish species. combination, also highlight potentially impacts via top-down (grazing) bottom-up (nutrient excretion) effects, but also, spatio-temporal variability magnitude these depending occurrence blooms. Studies prey fish, seabirds or mammals, benthic systems food-falls, were limited lacking Sea, despite increasing focus topics globally. Improved understanding temporal (seasonal, inter-annual, long-term) blooms corresponding would more spatio-temporally variable Sea. A broader coverage, inclusion taxa under-studied early life history stages, well implementation continuation long-term data series represent important steps this goal.

Language: Английский

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Ecology of Rhizostomeae

Advances in marine biology, Journal Year: 2024, Volume and Issue: unknown, P. 397 - 509

Published: Jan. 1, 2024

Language: Английский

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Jellyfish blooms—an overlooked hotspot and potential vector for the transmission of antimicrobial resistance in marine environments

mSystems, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

ABSTRACT Gelatinous zooplankton (GZ) represents an important component of marine food webs, capable generating massive blooms with severe environmental impact. When these collapse, considerable amounts organic matter (GZ-OM) either sink to the seafloor or can be introduced into ocean’s interior, promoting bacterial growth and providing a colonizable surface for microbial interactions. We hypothesized that GZ-OM is overlooked hotspot transmitting antimicrobial resistance genes (ARGs). To test this, we first re-analyzed metagenomes from two previous studies experimentally evolved communities in presence absence OM Aurelia aurita Mnemiopsis leidyi recovered bloom events thereafter performed additional time-resolved degradation experiments improve sample size statistical power our analysis. analyzed composition, ARG, mobile genetic element (MGE) content. Communities exposed displayed up fourfold increased relative ARG 10-fold MGE abundance per 16S rRNA gene copy compared controls. This pattern was consistent across classes independent GZ species, indicating nutrient influx surfaces drive changes. Potential carriers included genera containing potential pathogens raising concerns transfer pathogenic strains. Vibrio pinpointed as key player associated elevated ARGs MGEs. Whole-genome sequencing isolate revealed capability mobilization transfer. study establishes link between emerging issues coastal zones, jellyfish spread, both likely increasing future ocean change. Hence, are quintessential “One Health” issue where decreasing health directly impacts human health. IMPORTANCE Jellyfish are, context health, often seen mainly problematic oceanic bathing. Here demonstrate they may also play critical role hotspots transmission (AMR). employed (re-)analyses microcosm investigate how particulate collapsed blooms, specifically , significantly increase elements by one order magnitude. By abundant nutrients colonization, enhances proliferation, including mobility potentially bacteria like . Understanding this connection highlights importance monitoring part assessments developing strategies mitigate spread AMR ecosystems.

Language: Английский

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Spatially explicit individual-based model reveals the mauve stinger jellyfish distribution in the Mediterranean Sea

Ecological Modelling, Journal Year: 2025, Volume and Issue: 505, P. 111109 - 111109

Published: April 10, 2025

Language: Английский

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Jellyfish and Ctenophores Around Gotland in the Baltic Sea—Local Data Contributing to Global Assessments

Journal of Marine Science and Engineering, Journal Year: 2025, Volume and Issue: 13(5), P. 852 - 852

Published: April 25, 2025

In this study, we investigate the diversity and spatiotemporal distribution of gelatinous zooplankton (GZ) in central Baltic Sea (coastal waters Gotland adjacent Eastern Western Basins), a region characterised by low salinity ecological sensitivity. Despite being largest brackish water body globally, knowledge about its GZ, specifically, medusae ctenophores, is limited. Our research synthesises existing literature, open-access data, local reports. Three to five GZ species occur within studied area, with common jellyfish Aurelia aurita dominating. Peak sightings A. happen between July October, whereas ctenophore Mertensia ovum scyphozoan Cyanea capillata display sporadic occurrences. We identify notable gaps understanding phenology food web impacts due historical neglect insufficient monitoring, particularly under low-salinity conditions (between 5 8), which restricts richness. Jellyfish ctenophores fall Essential Ocean Variable (EOV) “Zooplankton Biomass Diversity” governed Global Observing System, UNESCO-IOC. EOVs are an approach for globally usable data adhere Findable, Accessible, Interoperable, Reusable (FAIR) principles. Including routine collection reporting would significantly enhance regional global understanding, contributing holistic ecosystem view. Thus, advocate ocean observation frameworks comprehensively monitor populations their ecological, biogeochemical, socioeconomic roles. findings serve as crucial step towards implications climate change assemblages Sea, promoting marine management.

Language: Английский

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Temporal characteristics of plankton indicators in coastal waters: High-frequency data from PlanktonScope

Journal of Sea Research, Journal Year: 2022, Volume and Issue: 189, P. 102283 - 102283

Published: Sept. 28, 2022

Plankton are excellent indicators of ecosystem status and fisheries because their pivotal role in marine food webs core values the integrated assessment (IEA). Monitoring plankton is essential to understand dynamics underlying processes. Recent advances imaging technologies have enabled situ, high-frequency, real-time observations coastal waters. While high-frequency time series provided unprecedented fundamental information about physical biological processes, understanding identifying mechanisms that influence dynamic remains a major challenge. We use data from PlanktonScope as an example examine impacts processes on at different temporal scales. Frequency patterns were identified for both environmental factors groups matched time. Using logistic regression models selected daily peaks groups, we found diurnal cycle, monsoon season, episodic events, such typhoons, had plankton, proxied by our indicators. further synthesized, across multiple spatiotemporal scales study area, various with mobility. Our demonstrates suite simultaneously generated provides robust holistic view pelagic over broad range In situ systems like promising tools near monitoring deep dynamics.

Language: Английский

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Bacterial degradation of ctenophore Mnemiopsis leidyi organic matter

mSystems, Journal Year: 2024, Volume and Issue: 9(2)

Published: Jan. 23, 2024

Jellyfish blooms are increasingly becoming a recurring seasonal event in marine ecosystems, characterized by rapid build-up of gelatinous biomass that collapses rapidly. Although these have the potential to cause major perturbations, their impact on microbial communities is largely unknown. We conducted an incubation experiment simulating bloom ctenophore Mnemiopsis leidyi Northern Adriatic, where we investigated bacterial response biomass. found actively degraded organic matter, and overall showed striking similarity dynamics previously observed after simulated jellyfish Aurelia aurita s.l . In both cases, single species, Pseudoalteromonas phenolica , was responsible for most degradation activity. This suggests different likely trigger consistent from natural communities, with specific species driving remineralization

Language: Английский

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Annual recurrence of prokaryotic climax communities in shallow waters of the North Mediterranean

Environmental Microbiology, Journal Year: 2024, Volume and Issue: 26(3)

Published: Feb. 28, 2024

Abstract In temperate coastal environments, wide fluctuations of biotic and abiotic factors drive microbiome dynamics. To link recurrent ecological patterns with planktonic microbial communities, we analysed a monthly‐sampled 3‐year time series 16S rRNA amplicon sequencing data, alongside environmental variables, collected at two stations in the northern Adriatic Sea. Time multivariate analyses allowed us to identify three stable, mature communities (climaxes), whose recurrence was mainly driven by changes photoperiod temperature. Mixotrophs (e.g., Ca. Nitrosopumilus , SUP05 clade, Marine Group II) thrived under oligotrophic, low‐light conditions, whereas copiotrophs NS4 NS5 clades) bloomed higher temperatures substrate availability. The early spring climax characterised more diverse set sequence variants, including associated phytoplankton‐derived organic matter degradation, photo‐auto/heterotrophic organisms Synechococcus sp., Roseobacter clade), rhythmicity linked lengthening. Through identification assemblages, begin delineate typology ecosystem based on composition functionality, allowing for intercomparison assemblages among different biomes, still underachieved goal omics era.

Language: Английский

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Scyphomedusae and Ctenophora of the Eastern Adriatic: Historical Overview and New Data

Diversity, Journal Year: 2021, Volume and Issue: 13(5), P. 186 - 186

Published: April 28, 2021

One of the obstacles to detecting regional trends in jellyfish populations is lack a defined baseline. In Adriatic Sea, fauna (Scyphozoa and Ctenophora) poorly studied compared other taxa. Therefore, our goal was collect systematize all available data provide baseline for future studies. Here we present phenological relative abundances based on 2010–2019 scientific surveys “citizen science” sighting program along eastern Adriatic. Inter-annual variability, seasonality spatial distribution patterns Scyphomedusae Ctenophore species were described with existing historical literature. Mass occurrences clear seasonal pattern related geographical location observed meroplanktonic Aurelia solida, Rhizostoma pulmo, lesser extent Chrysaora hysoscella, Cotylorhiza tuberculata Discomedusa lobata. Holoplanktonic Pelagia noctiluca also formed large aggregations, which seasonally less predictable restricted central southern Four Ctenophora produced blooms limited few areas: Bolinopsis vitrea, Leucothea multicornis, Cestum veneris non-native Mnemiopsis leidyi. However, differences between subregions have become pronounced since 2014. Our results suggest that gelatinous organisms are assuming an increasingly important role ecosystem, may alter balance food web lead harmful undesirable effects.

Language: Английский

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