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  1. Article ; Online: Parasite infection but not chronic microplastic exposure reduces the feeding rate in a freshwater fish

    Parker, Ben / Britton, J. Robert / Green, Iain D. / Amat-Trigo, Fátima / Andreou, Demetra

    Environmental Pollution. 2023 Mar., v. 320 p.121120-

    2023  

    Abstract: Microplastics (plastics <5 mm) are an environmental contaminant that can negatively impact the behaviour and physiology of aquatic biota. Although parasite infection can also alter the behaviour and physiology of their hosts, few studies have ... ...

    Abstract Microplastics (plastics <5 mm) are an environmental contaminant that can negatively impact the behaviour and physiology of aquatic biota. Although parasite infection can also alter the behaviour and physiology of their hosts, few studies have investigated how microplastic and parasite exposure interact to affect hosts. Accordingly, an interaction experiment tested how exposure to environmentally relevant microplastic concentrations and the trophically transmitted parasite Pomphorhynchus tereticollis affected the parasite load, condition metrics and feeding rate of the freshwater fish final host chub Squalius cephalus. Microplastic exposure was predicted to increase infection susceptibility, resulting in increased parasite loads, whereas parasite and microplastic exposure were expected to synergistically and negatively impact condition indices and feeding rates. Following chronic (≈170 day) dietary microplastic exposure, fish were exposed to a given number of gammarids (4/8/12/16/20), with half of the fish presented with parasite infected individuals, before a comparative functional response experiment tested differences in feeding rates on different live prey densities. Contrary to predictions, dietary microplastic exposure did not affect parasite abundance at different levels of parasite exposure, specific growth rate was the only condition index that was lower for exposed but unexposed fish, with no single or interactive effects of microplastic exposure detected. However, parasite infected fish had significantly lower feeding rates than unexposed fish in the functional response experiment, with exposed but unexposed fish also showing an intermediate decrease in feeding rates. Thus, the effects of parasitism on individuals were considerably stronger than microplastic exposure, with no evidence of interactive effects. Impacts of environmentally relevant microplastic levels might thus be relatively minor versus other stressors, with their interactive effects difficult to predict based on their single effects.
    Keywords Gammaridae ; Pomphorhynchus ; Squalius cephalus ; freshwater fish ; microplastics ; parasite load ; parasites ; parasitism ; pollution ; specific growth rate ; Functional response ; Host-parasite interactions ; Multiple stressors
    Language English
    Dates of publication 2023-03
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2023.121120
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    In stock of ZB MED Bonn / Germany

    Z 4136: Show issues

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  2. Article ; Online: Parasite infection but not chronic microplastic exposure reduces the feeding rate in a freshwater fish.

    Parker, Ben / Britton, J Robert / Green, Iain D / Amat-Trigo, Fátima / Andreou, Demetra

    Environmental pollution (Barking, Essex : 1987)

    2023  Volume 320, Page(s) 121120

    Abstract: Microplastics (plastics <5 mm) are an environmental contaminant that can negatively impact the behaviour and physiology of aquatic biota. Although parasite infection can also alter the behaviour and physiology of their hosts, few studies have ... ...

    Abstract Microplastics (plastics <5 mm) are an environmental contaminant that can negatively impact the behaviour and physiology of aquatic biota. Although parasite infection can also alter the behaviour and physiology of their hosts, few studies have investigated how microplastic and parasite exposure interact to affect hosts. Accordingly, an interaction experiment tested how exposure to environmentally relevant microplastic concentrations and the trophically transmitted parasite Pomphorhynchus tereticollis affected the parasite load, condition metrics and feeding rate of the freshwater fish final host chub Squalius cephalus. Microplastic exposure was predicted to increase infection susceptibility, resulting in increased parasite loads, whereas parasite and microplastic exposure were expected to synergistically and negatively impact condition indices and feeding rates. Following chronic (≈170 day) dietary microplastic exposure, fish were exposed to a given number of gammarids (4/8/12/16/20), with half of the fish presented with parasite infected individuals, before a comparative functional response experiment tested differences in feeding rates on different live prey densities. Contrary to predictions, dietary microplastic exposure did not affect parasite abundance at different levels of parasite exposure, specific growth rate was the only condition index that was lower for exposed but unexposed fish, with no single or interactive effects of microplastic exposure detected. However, parasite infected fish had significantly lower feeding rates than unexposed fish in the functional response experiment, with exposed but unexposed fish also showing an intermediate decrease in feeding rates. Thus, the effects of parasitism on individuals were considerably stronger than microplastic exposure, with no evidence of interactive effects. Impacts of environmentally relevant microplastic levels might thus be relatively minor versus other stressors, with their interactive effects difficult to predict based on their single effects.
    MeSH term(s) Animals ; Microplastics ; Plastics/toxicity ; Host-Parasite Interactions ; Parasites ; Cyprinidae ; Parasitic Diseases ; Fresh Water/parasitology ; Water Pollutants, Chemical/toxicity ; Water Pollutants, Chemical/analysis ; Environmental Monitoring
    Chemical Substances Microplastics ; Plastics ; Water Pollutants, Chemical
    Language English
    Publishing date 2023-01-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2023.121120
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2599: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article: Effects of Copper and the Insecticide Cypermethrin on a Soil Ciliate (Protozoa: Ciliophora) Community

    Luu, Hai T.T. / Esteban, Genoveva F. / Butt, Andrew A. / Green, Iain D.

    Protist. 2022 Feb., v. 173, no. 1

    2022  

    Abstract: Ciliated protozoa play important ecological roles in soils, yet few studies have investigated the effect of soil pollution on them. We determined the effect of copper (Cu) and cypermethrin on a soil ciliate community under microcosm conditions. Soils ... ...

    Abstract Ciliated protozoa play important ecological roles in soils, yet few studies have investigated the effect of soil pollution on them. We determined the effect of copper (Cu) and cypermethrin on a soil ciliate community under microcosm conditions. Soils were treated with Cu or cypermethrin and the abundance and species richness of ciliates determined 15 days later. Cu treatment increased soil ciliates abundance at the highest concentration (960 mg kg⁻¹), as did cypermethrin at a treatment of 160 mg kg⁻¹. No negative effect on ciliate abundance was found for either substance due to increased numbers of tolerant species, particularly Homalogastra setosa and Chilodonella uncinata in the case of Cu and Colpoda stenii and Colpoda inflata for cypermethrin treatments. However, several species were absent at high treatment levels. Notably, Halteria grandinella was not found in Cu treatments above 240 mg kg⁻¹, whilst Oxytricha setigera was not found in cypermethrin treatments above 160 mg kg⁻¹. For Homalogastra setosa, there was an initial positive response to cypermethrin, but abundance then decreased at a treatment of 320 mg kg⁻¹, and treatment at 640 mg kg⁻¹ eradicated the species from the microcosms. Accordingly, both substances affected the structure of the soil ciliate community at high concentrations.
    Keywords Colpoda ; Homalogastra ; Protozoa ; copper ; cypermethrin ; protists ; soil ; soil pollution ; species richness
    Language English
    Dates of publication 2022-02
    Publishing place Elsevier GmbH
    Document type Article
    ZDB-ID 2036014-9
    ISSN 1618-0941 ; 1434-4610
    ISSN (online) 1618-0941
    ISSN 1434-4610
    DOI 10.1016/j.protis.2021.125855
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  4. Article: Microplastic loads within riverine fishes and macroinvertebrates are not predictable from ecological or morphological characteristics

    Parker, Ben / Andreou, Demetra / Pabortsava, Katsiaryna / Barrow, Magdalena / Green, Iain D. / Britton, J. Robert

    Science of the total environment. 2022 May 25,

    2022  

    Abstract: Microplastics are a relatively new but important form of freshwater contamination that can be ingested by a range of different species, with particle counts thought to be predictable from species ecology and morphology. Here, we report levels of ... ...

    Abstract Microplastics are a relatively new but important form of freshwater contamination that can be ingested by a range of different species, with particle counts thought to be predictable from species ecology and morphology. Here, we report levels of microplastics in a 26 μm-5 mm size range within the macroinvertebrate and fish community of a lowland river (Dorset Stour, SW England), and test the hypothesis that counts are predictable from characteristics such as feeding guild, body length and trophic position. Macroinvertebrates (n = 257, 12 taxa) and fish (n = 418, 9 species) were collected from distinct river reaches by kick sampling and rod and line angling, respectively. Batches of whole macroinvertebrates and individual fish gastrointestinal tracts were digested with 30% hydrogen peroxide before microplastic screening and FTIR polymer confirmation on a particle subset. Particles were found in 40% of pooled macroinvertebrate batches (taxa incidences: 14–75%) and 39% of fishes (species incidences: 29–47%). Dominant particle feature categories were ≤100 μm, blue/green, fragments and fibres identified as various polyolefins. Although particle counts in macroinvertebrates were highest in Ephemeroptera (mean of 0.74 particles per individual), the relationships between particle loads, batch number and guild were all non-significant. In fishes, particle counts were not significantly related to species, stomach structure, feeding guild or body length, with spatial differences also not apparent across the catchment. Individual fish particle counts were similarly not significantly associated with their trophic positions (calculated from bulk δ¹⁵N values for a subset of fishes) and parasite load of Pomphorhynchus tereticollis. Correlations between fish and macroinvertebrate particle counts within specific river reaches were also not significant. In entirety, these results indicated although loadings of microplastic particles were relatively consistent within the two communities, they were not predictable from any of their ecological or morphological characteristics.
    Keywords Ephemeroptera ; Pomphorhynchus ; body length ; environment ; fish ; fish communities ; freshwater ; hydrogen peroxide ; macroinvertebrates ; microplastics ; parasite load ; riparian areas ; rivers ; stomach ; watersheds ; England
    Language English
    Dates of publication 2022-0525
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.156321
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    In stock of ZB MED Bonn / Germany

    Z 74/341: Show issues

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  5. Article ; Online: Microplastic loads within riverine fishes and macroinvertebrates are not predictable from ecological or morphological characteristics.

    Parker, Ben / Andreou, Demetra / Pabortsava, Katsiaryna / Barrow, Magdalena / Green, Iain D / Britton, J Robert

    The Science of the total environment

    2022  Volume 839, Page(s) 156321

    Abstract: Microplastics are a relatively new but important form of freshwater contamination that can be ingested by a range of different species, with particle counts thought to be predictable from species ecology and morphology. Here, we report levels of ... ...

    Abstract Microplastics are a relatively new but important form of freshwater contamination that can be ingested by a range of different species, with particle counts thought to be predictable from species ecology and morphology. Here, we report levels of microplastics in a 26 μm-5 mm size range within the macroinvertebrate and fish community of a lowland river (Dorset Stour, SW England), and test the hypothesis that counts are predictable from characteristics such as feeding guild, body length and trophic position. Macroinvertebrates (n = 257, 12 taxa) and fish (n = 418, 9 species) were collected from distinct river reaches by kick sampling and rod and line angling, respectively. Batches of whole macroinvertebrates and individual fish gastrointestinal tracts were digested with 30% hydrogen peroxide before microplastic screening and FTIR polymer confirmation on a particle subset. Particles were found in 40% of pooled macroinvertebrate batches (taxa incidences: 14-75%) and 39% of fishes (species incidences: 29-47%). Dominant particle feature categories were ≤100 μm, blue/green, fragments and fibres identified as various polyolefins. Although particle counts in macroinvertebrates were highest in Ephemeroptera (mean of 0.74 particles per individual), the relationships between particle loads, batch number and guild were all non-significant. In fishes, particle counts were not significantly related to species, stomach structure, feeding guild or body length, with spatial differences also not apparent across the catchment. Individual fish particle counts were similarly not significantly associated with their trophic positions (calculated from bulk δ
    MeSH term(s) Animals ; Environmental Monitoring ; Fishes ; Microplastics ; Plastics ; Water Pollutants, Chemical/analysis
    Chemical Substances Microplastics ; Plastics ; Water Pollutants, Chemical
    Language English
    Publishing date 2022-05-28
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.156321
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  6. Article ; Online: Low microplastic loads in riverine European eel (Anguilla anguilla) from southwest England during their marine-freshwater transition.

    Parker, Ben / Andreou, Demetra / Green, Iain D / Pabortsava, Katsiaryna / Boardman, Rose M / Pinder, Adrian C / Wright, Rosalind M / Britton, Robert

    Journal of fish biology

    2023  Volume 103, Issue 1, Page(s) 194–198

    Abstract: The microplastic loads in elvers of the critically endangered European eel Anguilla anguilla, sampled in the lower reaches of three English rivers, were very low (incidence: 3.3%, mean ± s.d.: 0.03 ± 0.18 particles) and did not vary with body length or ... ...

    Abstract The microplastic loads in elvers of the critically endangered European eel Anguilla anguilla, sampled in the lower reaches of three English rivers, were very low (incidence: 3.3%, mean ± s.d.: 0.03 ± 0.18 particles) and did not vary with body length or between rivers. Particles were mostly black, polyolefins, fibres and fragments of size 101-200 μm. Current levels indicate a low contamination pressure locally and, consequently, management efforts might prioritise mitigating the effects of other stressors affecting the species.
    MeSH term(s) Animals ; Anguilla ; Microplastics ; Plastics ; Fresh Water ; England
    Chemical Substances Microplastics ; Plastics
    Language English
    Publishing date 2023-05-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.15426
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  7. Article: Distinct microplastic patterns in the sediment and biota of an urban stream

    Parker, Ben / Britton, J. Robert / Pabortsava, Katsiaryna / Barrow, Magdalena / Green, Iain D. / Dominguez Almela, Victoria / Andreou, Demetra

    Science of the total environment. 2022 Sept. 10, v. 838

    2022  

    Abstract: Urban freshwaters, their sediments and resident biota are often highly susceptible to microplastic contamination from catchment-specific sources. Water velocity and spatiotemporal dynamics within the system can impact microplastic loads, while biological ...

    Abstract Urban freshwaters, their sediments and resident biota are often highly susceptible to microplastic contamination from catchment-specific sources. Water velocity and spatiotemporal dynamics within the system can impact microplastic loads, while biological features may additionally impact levels within freshwater biota. Here, we investigated the spatiotemporal variations in microplastic loads collected from sediment, macroinvertebrate and fish samples from an urban watercourse (Bourne Stream) in Dorset, southwest England. Sediment particles were mostly fragments of colours (especially orange and purple) whereas microplastics in both macroinvertebrates and fishes were blue/green and fibres. Across all sample types, the dominant particle size class was ≤100 μm. Median (M) and range (R) of microplastic loads within each sample type were sediment: M = 0.06, R = 0–0.36 particles g⁻¹; macroinvertebrates: M = 0, R = 0–4 particles per batch; and fishes: M = 1, R = 0–6 particles per individual. Sediment loads varied spatially, with the highest load in the most upstream site, whereas biotic loads did not vary across space and time. Macroinvertebrate batch loadings varied between taxa and feeding guild, with counts significantly higher in annelids but lower in herbivores. Fish counts were higher in species with true, differentiated stomachs, but with the effects of species, feeding guild and body size being non-significant. Within sites, mean microplastic loads did not correlate between sediment, macroinvertebrate and fish samples. These results suggest that sediment freshwater microplastic loadings may vary spatially but that these trends are not reflected by, or correlated to, those in the biota where ingestion varies with biological traits. Assessments of freshwater microplastic contamination must therefore consider sampling spatiotemporally and across different biotic communities to fully understand the scale of contamination, and to subsequently undertake effective mitigation steps.
    Keywords Annelida ; body size ; environment ; fish ; freshwater ; ingestion ; macroinvertebrates ; microplastics ; particle size ; sediments ; streams ; England
    Language English
    Dates of publication 2022-0910
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.156477
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    In stock of ZB MED Bonn / Germany

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  8. Article ; Online: Low microplastic loads in riverine European eel (Anguilla anguilla) from southwest England during their marine–freshwater transition

    Parker, Ben / Andreou, Demetra / Green, Iain D. / Pabortsava, Katsiaryna / Boardman, Rose M. / Pinder, Adrian C. / Wright, Rosalind M. / Britton, Robert

    Journal of Fish Biology. 2023 July, v. 103, no. 1 p.194-198

    2023  

    Abstract: The microplastic loads in elvers of the critically endangered European eel Anguilla anguilla, sampled in the lower reaches of three English rivers, were very low (incidence: 3.3%, mean ± s.d.: 0.03 ± 0.18 particles) and did not vary with body length or ... ...

    Abstract The microplastic loads in elvers of the critically endangered European eel Anguilla anguilla, sampled in the lower reaches of three English rivers, were very low (incidence: 3.3%, mean ± s.d.: 0.03 ± 0.18 particles) and did not vary with body length or between rivers. Particles were mostly black, polyolefins, fibres and fragments of size 101–200 μm. Current levels indicate a low contamination pressure locally and, consequently, management efforts might prioritise mitigating the effects of other stressors affecting the species.
    Keywords Anguilla anguilla ; body length ; fish ; microplastics ; riparian areas ; England
    Language English
    Dates of publication 2023-07
    Size p. 194-198.
    Publishing place Blackwell Publishing Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.15426
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    In stock of ZB MED Bonn / Germany

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  9. Article: Microplastics in freshwater fishes: Occurrence, impacts and future perspectives

    Parker, Ben / Andreou, Demetra / Green, Iain D / Britton, J. Robert

    Fish and fisheries. 2021 May, v. 22, no. 3

    2021  

    Abstract: Microplastics (MPs) are small, plastic particles of various shapes, sizes and polymers. Although well studied in marine systems, their roles and importance in freshwater environments remain uncertain. Nevertheless, the restricted ranges and variable ... ...

    Abstract Microplastics (MPs) are small, plastic particles of various shapes, sizes and polymers. Although well studied in marine systems, their roles and importance in freshwater environments remain uncertain. Nevertheless, the restricted ranges and variable traits of freshwater fishes result in their communities being important receptors and strong bioindicators of MP pollution. Here, the current knowledge on MPs in freshwater fishes is synthesized, along with the development of recommendations for future research and sample processing. MPs are commonly ingested and passively taken up by numerous freshwater fishes, with ingestion patterns often related to individual traits (e.g. body size, trophic level) and environmental factors (e.g. local urbanization, habitat features). Controlled MP exposure studies highlight various effects on fish physiology, biochemistry and behaviour that are often complex, unpredictable, species‐specific and nonlinear in respect of dose–response relationships. Egestion is typically rapid and effective, although particles of a particular shape and/or size may remain, or translocate across the intestinal wall to other organs via the blood. Regarding future studies, there is a need to understand the interactions of MP pollution with other anthropogenic stressors (e.g. warming, eutrophication), with a concomitant requirement to increase the complexity of studies to enable impact assessment at population, community and ecosystem levels, and to determine whether there are consequences for processes, such as parasite transmission, where MPs could vector parasites or increase infection susceptibility. This knowledge will determine the extent to which MP pollution can be considered a major anthropogenic stressor of freshwaters in this era of global environmental change.
    Keywords anthropogenic stressors ; blood ; body size ; dose response ; ecosystems ; eutrophication ; freshwater ; global change ; habitats ; ingestion ; intestines ; microplastics ; parasites ; pollution ; trophic levels ; urbanization
    Language English
    Dates of publication 2021-05
    Size p. 467-488.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 2024569-5
    ISSN 1467-2979 ; 1467-2960
    ISSN (online) 1467-2979
    ISSN 1467-2960
    DOI 10.1111/faf.12528
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  10. Article ; Online: Effects of Copper and the Insecticide Cypermethrin on a Soil Ciliate (Protozoa: Ciliophora) Community.

    Luu, Hai T T / Esteban, Genoveva F / Butt, Andrew A / Green, Iain D

    Protist

    2021  Volume 173, Issue 1, Page(s) 125855

    Abstract: Ciliated protozoa play important ecological roles in soils, yet few studies have investigated the effect of soil pollution on them. We determined the effect of copper (Cu) and cypermethrin on a soil ciliate community under microcosm conditions. Soils ... ...

    Abstract Ciliated protozoa play important ecological roles in soils, yet few studies have investigated the effect of soil pollution on them. We determined the effect of copper (Cu) and cypermethrin on a soil ciliate community under microcosm conditions. Soils were treated with Cu or cypermethrin and the abundance and species richness of ciliates determined 15 days later. Cu treatment increased soil ciliates abundance at the highest concentration (960 mg kg
    MeSH term(s) Ciliophora ; Copper ; Insecticides ; Oligohymenophorea ; Pyrethrins ; Soil
    Chemical Substances Insecticides ; Pyrethrins ; Soil ; cypermethrin (1TR49121NP) ; Copper (789U1901C5)
    Language English
    Publishing date 2021-12-31
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2036014-9
    ISSN 1618-0941 ; 1434-4610
    ISSN (online) 1618-0941
    ISSN 1434-4610
    DOI 10.1016/j.protis.2021.125855
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