One like all? Behavioral response range of native and invasive amphipods to neonicotinoid exposure

Environmental Pollution, Год журнала: 2024, Номер 356, С. 124235 - 124235

Опубликована: Май 25, 2024

Native and invasive species often occupy similar ecological niches environments where they face comparable risks from chemical exposure. Sometimes, are phylogenetically related to native species, e.g. may come the same family have potentially sensitivities environmental stressors due phylogenetic conservatism similarity. However, empirical studies that aim understand nuanced impacts of chemicals on full range closely rare, yet would help comprehend patterns current biodiversity loss turnover. Behavioral sublethal endpoints increasing ecotoxicological interest. Therefore, we investigated behavioral responses (i.e., change in movement behavior) four dominant amphipod Rhine-Main area (central Germany) when exposed neonicotinoid thiacloprid. Moreover, beyond species-specific responses, interactions (e.g. parasitation with Acanthocephala) play a crucial role shaping behavior, considered these infections our analysis. Our findings revealed distinct baseline behaviors thiacloprid Notably, Gammarus fossarum exhibited biphasic changes hyperactivity at low concentrations decreased higher concentrations. Whereas pulex, roeselii Dikerogammarus villosus, showed no or weaker responses. This partly explain why G. disappears chemically polluted regions while other persist there certain degree. But it also shows potential pre-exposure habitat influence because habituation occurs, be harmful individuals habitat. The observed were further influenced by acanthocephalan parasites, which altered behavior enhanced response results underscore intricate diverse nature among highlighting their unique vulnerabilities anthropogenically impacted freshwater ecosystems.

Язык: Английский

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Timing matters: impact of different frequencies of low pesticide pulses on aquatic invertebrates

Environmental Sciences Europe, Год журнала: 2025, Номер 37(1)

Опубликована: Апрель 6, 2025

Язык: Английский

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Competitive interaction in headwaters: slow upstream migration leads to trophic competition between native and non-native amphipods

NeoBiota, Год журнала: 2024, Номер 90, С. 193 - 216

Опубликована: Фев. 1, 2024

The spread of non-native species is one the outcomes global change, threatening many native communities through predation and competition. Freshwater ecosystems are particularly affected by turnover with species. One that has been established in Central Europe for decades – or even a few centuries amphipod crustacean Gammarus roeselii . Although G. nowadays widespread major river systems, there have recent reports its into smaller streams typically inhabited fossarum Due to their leaf shredding ability, takes up key position headwater streams. This raises important question, what extent can equivalently take over this function. To answer we collected both from nine different sites mid-mountain system (Kinzig catchment, Hesse, Germany) investigated functional similarity using combination stable isotope analysis, gut content morphology. hardly differed morphological characteristics, only females showed differences some traits. Gut analysis indicated broad dietary overlap, while isotopes higher trophic observed overlap could intensify interspecific competition allow larger more predaceous replace future as keystone However, differentiation also shows co-existence occur occupying niches. Moreover, wide range exploited resources demonstrate omnivorous lifestyle , which likely help succeed rapidly changing environments.

Язык: Английский

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The impact of repeated pyrethroid pulses on aquatic communities

The Science of The Total Environment, Год журнала: 2024, Номер 955, С. 177177 - 177177

Опубликована: Ноя. 2, 2024

Язык: Английский

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Rapid development of increased neonicotinoid tolerance in non-target freshwater amphipods

Environment International, Год журнала: 2023, Номер 183, С. 108368 - 108368

Опубликована: Дек. 3, 2023

The comprehensive assessment of the long-term impacts constant exposure to pollutants on wildlife populations remains a relatively unexplored area ecological risk assessment. Empirical evidence suggest that multigenerational affects susceptibility organisms is scarce, and underlying mechanisms in natural environment have yet be fully understood. In this study, we first examined arthropod candidate species, Gammarus roeselii – unlike closely related species commonly occurs many contaminated river systems Central Europe. This makes it suitable study organism investigate development tolerances phenotypic adaptations along pollution gradients. 96-h acute toxicity assay with neonicotinoid thiacloprid, indeed observed successive increase tolerance coming from regions. was accompanied by certain change, increased investment into reproduction. To address question whether these changes are plastic or emerged longer lasting evolutionary processes, conducted multigeneration experiment second part our study. Here, used closely-related Hyalella azteca pre-exposed them for multiple generations sublethal concentrations thiacloprid semi-static design (one week renewal media containing 0.1 1.0 µg L-1 thiacloprid). individuals were then assays see how quickly such adaptive responses can develop. Over only two generations, almost doubled, suggesting developmental plasticity as plausible mechanism rapid adaptation strong selection factors insecticides. It discovered rapidly developed species-specific explains why which may not comparable response capabilities disappear polluted habitats. Overall, findings highlight neglected role during short- pollution. Moreover, results show even pollutant levels seven times lower than found region clear impact trajectories non-target species.

Язык: Английский

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Macroinvertebrate communities respond strongly but non-specifically to a toxicity gradient derived by effect-based methods

Environmental Pollution, Год журнала: 2024, Номер 356, С. 124330 - 124330

Опубликована: Июнь 5, 2024

Chemical pollution is one of the most important threats to freshwater ecosystems. The plethora potentially occurring chemicals and their effects in complex mixtures challenge standard monitoring methods. Effect-based methods (EBMs) are proposed as complementary tools for assessment chemical toxic effects. To investigate pollution, ecological relevance EBMs potential macroinvertebrates toxicity-specific bioindicators, ecotoxicological data were linked. Baseline toxicity, mutagenicity, dioxin-like estrogenic activity water sediment samples from 30 river sites central Germany quantified with four vitro bioassays. responses macroinvertebrate communities at these assessed by calculating 16 taxonomic functional metrics investigating changes trait composition. Principal component analysis revealed an increase toxicity along a joint gradient different modes action. This was associated decrease biodiversity quality, well significant strength suggested strong impact underlined suitability detecting relevant However, metrics, taxa, traits vulnerability or tolerance found also respond other stressors previous studies thus may have only low bioindicators. Because integratively all present stressors, linking both environmental necessary overall but isolate individual stressors. high separate multiple stressor scenario, identifying presence groups specific

Язык: Английский

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Cryptic species complex shows population-dependent, rather than lineage-dependent tolerance to a neonicotinoid

Environmental Pollution, Год журнала: 2024, Номер 362, С. 124888 - 124888

Опубликована: Сен. 10, 2024

Язык: Английский

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Extremely low repeated pyrethroid pulses increase harmful effects on caddisfly larvae (Chaetopteryx villosa) and influence species interactions

Aquatic Toxicology, Год журнала: 2024, Номер 279, С. 107212 - 107212

Опубликована: Дек. 14, 2024

Язык: Английский

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Cryptic Species Complex Shows Population-Dependent, Rather than Genotype-Dependent Tolerance to a Neonicotinoid

Опубликована: Янв. 1, 2024

Cryptic species are rarely considered in ecotoxicology, resulting misleading outcomes when using a single morphospecies that encompasses multiple cryptic species. This oversight contributes to the lack of reproducibility ecotoxicological experiments and promotes unreliable extrapolations. The important question ecological differentiation sensitivity is tackled, substantial knowledge gap vulnerability individual within complex. In times agricultural intensification frequent use pesticides, there an urgent need for better understanding complexes possible differences adaptive processes. We used complex aquatic amphipod Gammarus roeselii, which comprises at least 13 genetic lineages spans from small-scale endemic Greece large-scale distributed central Europe. exposed eleven populations belonging four neonicotinoid thiacloprid acute toxicity assay. recorded various environmental variables each habitat assess potential pre-exposure contaminants. Our results showed differed up 4-fold their tolerances. lineage identity had rather minor influence, suggesting especially recent substance (or similar substances) triggered mechanisms. extent these mechanisms equally all needs be addressed future. study provides strong evidence selection operates population level, highlighting toxicant population-specific. has significant implications design methodology, as it underscores importance considering variability not only complexes, but also populations. Recognizing addressing population-specific vulnerabilities crucial terms conservation, on different adaptation pathways.

Язык: Английский

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Cryptic Species Complex Shows Population-Dependent, Rather than Genotype-Dependent Tolerance to a Neonicotinoid

Опубликована: Янв. 1, 2024

Cryptic species are rarely considered in ecotoxicology, resulting misleading outcomes when using a single morphospecies that encompasses multiple cryptic species. This oversight contributes to the lack of reproducibility ecotoxicological experiments and promotes unreliable extrapolations. The important question ecological differentiation sensitivity is tackled, substantial knowledge gap vulnerability individual within complex. In times agricultural intensification frequent use pesticides, there an urgent need for better understanding complexes possible differences adaptive processes. We used complex aquatic amphipod Gammarus roeselii, which comprises at least 13 genetic lineages spans from small-scale endemic Greece large-scale distributed central Europe. exposed eleven populations belonging four neonicotinoid thiacloprid acute toxicity assay. recorded various environmental variables each habitat assess potential pre-exposure contaminants. Our results showed differed up 4-fold their tolerances. lineage identity had rather minor influence, suggesting especially recent substance (or similar substances) triggered mechanisms. extent these mechanisms equally all needs be addressed future. study provides strong evidence selection operates population level, highlighting toxicant population-specific. has significant implications design methodology, as it underscores importance considering variability not only complexes, but also populations. Recognizing addressing population-specific vulnerabilities crucial terms conservation, on different adaptation pathways.

Язык: Английский

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