A5012840645- Evolution and Genetic Dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Parasite Biology and Host Interactions
- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Aquatic Ecosystems and Biodiversity
- Genetic diversity and population structure
- Microplastics and Plastic Pollution
- Fish Ecology and Management Studies
- Parasitic Infections and Diagnostics
- Evolutionary Game Theory and Cooperation
- Nanoparticles: synthesis and applications
- Environmental DNA in Biodiversity Studies
- Myxozoan Parasites in Aquatic Species
- Mathematical and Theoretical Epidemiology and Ecology Models
- Aquatic Invertebrate Ecology and Behavior
- Mycobacterium research and diagnosis
- Pharmaceutical and Antibiotic Environmental Impacts
- Genomics and Phylogenetic Studies
- Vibrio bacteria research studies
- Recycling and Waste Management Techniques
- Plant Disease Resistance and Genetics
- Zoonotic diseases and public health
- Coastal wetland ecosystem dynamics
- Gut microbiota and health
Freie Universität Berlin
2016-2025
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2016-2025
Berlin Brandenburg Institute of Advanced Biodiversity Research
2023-2025
Forschungsverbund Berlin
2023
John Wiley & Sons (United States)
2016
Ecological Society of America
2016
Institut für Angewandte Gewässerökologie (Germany)
2016
Ludwig-Maximilians-Universität München
2008-2014
Leibniz Association
2014
University of New England
2012
Microplastic particles are ubiquitous not only in marine but also freshwater ecosystems. However, the impacts of microplastics, consisting a large variety synthetic polymers, on organisms remains poorly understood. We examined effects two polymer mixtures morphology, life history and molecular level waterflea Daphnia magna (three different clones). ~40 μm were supplied at low concentration (1% food particles) leading to an average ~30 digestive tract which reflects high microplastic...
Inducible defensive traits against herbivores or predators are widespread in plants and animals. Theory predicts that defended morphs have greater fitness the presence of predators, but lower than undefended absence predators. If such costs did not exist, then a constitutively morph would be favored by natural selection; yet, evidence for has been elusive. Our current work reveals significant cost to inducible defenses. Using waterflea (Daphnia) model system, we show induced significantly...
Abstract Parasites are rarely included in food web studies, although they can strongly alter trophic interactions. In aquatic ecosystems, poorly grazed cyanobacteria often dominate phytoplankton communities, leading to the decoupling of primary and secondary production. Here, we addressed interface between predator-prey host-parasite interactions by conducting a life-table experiment, which four Daphnia galeata genotypes were maintained on quantitatively comparable diets consisting healthy...
The Red Queen coevolutionary hypothesis predicts that parasites drive oscillations in host genotype frequencies due to frequency-dependent selection where common hosts are at disadvantage. However, examples of this phenomenon natural populations scarce. To examine if the theory operates wild, we studied genetic structure crustacean waterflea (Daphnia), relation their infection levels, for which collected multiple samples from a variety lakes. most clone given population was often...
Parasites play important roles in local population dynamics and genetic structure. However, due to insufficient diagnostic tools, detailed host-parasite interactions may remain concealed by hidden parasite diversity natural systems. Microscopic examination of 19 European lake Daphnia populations revealed the presence three groups parasites: fungi, microsporidia, oomycetes. For most these parasites no markers have been described so far. Based on sequence similarities nuclear small-subunit...
Chytrids are ubiquitous fungal parasites in aquatic ecosystems, infecting representatives of all major phytoplankton groups. They repack carbon from inedible hosts into easily ingested chytrid propagules (zoospores), rendering this accessible to zooplankton. Grazing on zoospores may circumvent bottlenecks transfer imposed by the dominance or poorly nutritious (mycoloop). We explored qualitative aspects mycoloop analysing lipid profiles (fatty acids, sterols) two chytrids bloom-forming taxa...
The accumulation of micro- and nanoplastic particles in freshwater bodies has given rise to much concern regarding their potential adverse effects on aquatic biota. Beyond known single species, recent experimental evidence suggests that host–parasite interactions can also be affected by environmental concentrations nanoplastics. However, investigating the contaminants simplified infection settings (i.e. one host, parasite) may understate ecological relevance, considering co-infections are...
Parasite driven time-lagged negative frequency-dependent selection of hosts has been studied in natural populations by following changes host genotype frequencies over time. However, such dynamics have not considered at higher taxonomic levels, for example, between parental species and their hybrids. In a field study on Daphnia hybrid system, we observed that one taxon first was relatively under-infected, but became over-infected after strong increase frequency. This finding is consistent...
The competitive ability of hybrids, compared with their parental taxa, can cover a wide fitness range from poor to superior. For example communities the Daphnia galeata – hyalina cucullata species complex often show hybrid dominance. We tested whether taxa composition 43 European lakes inhabited by this be explained habitat characteristics (e.g. size descriptors, trophy level) or geography. found that D. occurs more frequently south Alps, whereas and are in north. Lakes dominance had higher...
SUMMARY The epidemiological and ecological processes which govern the success of multiple-species co-infections are as yet unresolved. Here we investigated prior versus late residency within hosts, meaning parasite contacts host first, to determine if outcomes intra-host competition altered. We infected a single genotype waterflea Daphnia galeata with both intestinal protozoan Caullerya mesnili haemolymph fungus Metschnikowia sp. (single each species), infections, simultaneous sequential...
Abstract Chytrid fungal parasites are ubiquitous in aquatic ecosystems and infect a wide array of organisms, including all phytoplankton groups. In addition to their role as parasites, chytrids serve food zooplankton, thereby establishing an alternative trophic link between primary secondary production pelagic webs, the so‐called mycoloop. We hypothesized that, mycoloop, chytrid infection facilitates grazing filamentous by rendering it more edible zooplankton consumers through...
Infectious diseases of humans and wildlife are increasing globally but the contribution novel artificial anthropogenic entities such as nano-sized plastics to disease dynamics remains unknown. Despite mounting evidence for adverse effects nanoplastics (NPs) on single organisms, it is unclear whether how they affect interaction between species thereby lead ecological harm. In order incorporate impact NP pollution into host-parasite-environment interactions captured in "disease triangle", we...
Parasites are known to mediate trophic interactions and can, for example, modify how consumers acquire resources. These modifications of host feeding behaviour can be imposed through three interconnected mechanisms affecting: 1) food acquisition, 2) digestion or 3) energy budgets. As a result, infected hosts may consume more, less the same amount compared their uninfected conspecifics. It is commonly assumed that have lower consumption rates than hosts, but comprehensive quantitative...
Abstract Micro/nanoplastics pose a new environmental threat to aquatic ecosystems. The model organism Daphnia spp. has been used in many exposure studies investigate the effect of micro/nanoplastics on fitness. However, owing variation experimental approaches, it is difficult compare findings. aim our study was systematically review research fitness, identify gaps and offer recommendations for future studies. We synthesised 121 extracted data numerous categories concerning design,...
Abstract Anthropogenic activities have led to a global rise in water temperatures, leading an increased interest how warming affects infectious disease ecology. While most studies focused on individual host-parasite systems, there is gap understanding the impact of multi-host, multi-parasite assemblages natural ecosystems. To address this gap, we examined freshwater eukaryotic parasite communities ten lakes near Konin, Poland: five artificially heated and nearby non-heated “control” lakes....
Biodiversity loss and widespread ecosystem degradation are among the most pressing challenges of our time, requiring urgent action. Yet understanding their causes remains limited because prevailing ecological concepts approaches often overlook underlying complex interactions individuals same or different species, interacting with each other environment. We propose a paradigm shift in science, moving from simplifying frameworks that use population community averages to an integrative approach...
Hybridization is common among cyclical parthenogens, especially in zooplankton species assemblages of the genus Daphnia. To explore hybridization dynamics and extent clonal diversity Daphnia longispina complex, we analysed population structure eight permanent lakes. Based on 15 microsatellite loci, three major taxonomic units emerged: two species, D. galeata their F1 hybrids, supported by factorial correspondence analysis Bayesian methods. At same time, detection backcross classes differed...
Cladocerans of the Daphnia longispina complex are often key components pelagic food webs in northern temperate lakes and ponds. In present study, we aimed to fill gap knowledge on biogeography diversity this species complex, through analysis (by sequencing two mitochondrial genes) taxonomic structure 18 lake populations across China, covering a large geographical ecological range. Based patterns observed Western Palaearctic Japan, hypothesized that several D. should coexist some cryptic...
Experimental evolution can be used to test for and characterize parasite pathogen adaptation. We undertook a serial-passage experiment in which single population of the obligate fungal (chytrid) Rhizophydium megarrhizum was maintained over period 200 days under different mono- multiclonal compositions its phytoplankton host, bloom-forming cyanobacterium Planktothrix. Despite initially inferior performance, populations sustained exposure novel monoclonal hosts experienced rapid fitness...
Abstract The accumulation and degradation of plastic waste in freshwater bodies poses a threat to aquatic biota. Microplastics (<5 mm) can transfer upwards food chains have been shown induce deleterious effects on important players ecosystems, including zooplankton. A smaller category microplastic particles, the so‐called nanoplastics (≤100 nm) raise special concern due their ability act at sub‐cellular molecular levels. Despite growing knowledge physiological traits individual species,...
Abstract In nature, parasite species often coinfect the same host. Yet, it is not clear what drives natural dynamics of coinfection prevalence. The prevalence coinfections might be affected by interactions among coinfecting species, or simply derive from diversity. Identifying relative impact these parameters crucial for understanding patterns coinfections. We studied occurrence and likelihood in populations water fleas ( Daphnia magna ). Coinfection was within bounds expected chance...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and characterization of singly labeled ruthenium polypyridine cytochrome c derivativesLian Ping Pan, Bill Durham, Justyna Wolinska, Francis MillettCite this: Biochemistry 1988, 27, 19, 7180–7184Publication Date (Print):September 1, 1988Publication History Published online1 May 2002Published inissue 1 September 1988https://pubs.acs.org/doi/10.1021/bi00419a003https://doi.org/10.1021/bi00419a003research-articleACS PublicationsRequest reuse...