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

Vanessa Hartmann,

Berardino Cocchiararo

et al.

Published: Jan. 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.

Language: Английский

Rapid development of increased neonicotinoid tolerance in non-target freshwater amphipods DOI Creative Commons
Jonas Jourdan,

Safia El Toum Abdel Fadil,

Jörg Oehlmann

et al.

Environment International, Journal Year: 2023, Volume and Issue: 183, P. 108368 - 108368

Published: Dec. 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.

Language: Английский

Citations

7
Competitive interaction in headwaters: slow upstream migration leads to trophic competition between native and non-native amphipods DOI Creative Commons
Lars Pelikan, Eglė Šidagytė‐Copilas, Andrius Garbaras

et al.

NeoBiota, Journal Year: 2024, Volume and Issue: 90, P. 193 - 216

Published: Feb. 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.

Language: Английский

Citations

2
Cryptic species complex shows population-dependent, rather than lineage-dependent tolerance to a neonicotinoid DOI Creative Commons
Jana Kabus,

Vanessa Hartmann,

Berardino Cocchiararo

et al.

Environmental Pollution, Journal Year: 2024, Volume and Issue: 362, P. 124888 - 124888

Published: Sept. 10, 2024

Language: Английский

Citations

1
Cryptic Species Complex Shows Population-Dependent, Rather than Genotype-Dependent Tolerance to a Neonicotinoid DOI
Jana Kabus,

Vanessa Hartmann,

Berardino Cocchiararo

et al.

Published: Jan. 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.

Language: Английский

Citations

0
Angiopteris nodosipetiolata (Marattiaceae), a new fern species from Yunnan, China DOI Creative Commons
Ting Wang, Tuo Yang, Jinguo Zhang

et al.

PhytoKeys, Journal Year: 2024, Volume and Issue: 241, P. 177 - 189

Published: April 30, 2024

Ting Wang tris, H.F.Chen & Y.H.Yan, a new fern of Marattiaceae, is described and illustrated. Morphologically,

Language: Английский

Citations

0
Cryptic Species Complex Shows Population-Dependent, Rather than Genotype-Dependent Tolerance to a Neonicotinoid DOI
Jana Kabus,

Vanessa Hartmann,

Berardino Cocchiararo

et al.

Published: Jan. 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.

Language: Английский

Citations

0