Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1111/eva.13387
Lizenz creative commons licence
Titel (primär) Reduced genetic diversity of freshwater amphipods in rivers with increased levels of anthropogenic organic micropollutants
Autor Švara, V.; Michalski, S.G.; Krauss, M. ORCID logo ; Schulze, T. ORCID logo ; Geuchen, S.; Brack, W.; Luckenbach, T. ORCID logo
Quelle Evolutionary Applications
Erscheinungsjahr 2022
Department BIOTOX; BZF; WANA
Band/Volume 15
Heft 6
Seite von 976
Seite bis 991
Sprache englisch
Topic T9 Healthy Planet
T5 Future Landscapes
Keywords anthropogenic pollution; evolutionary toxicology; Gammarus pulex; LC-HRMS; microsatellites
Abstract Anthropogenic chemicals in freshwater environments contribute majorly to ecosystem degradation and biodiversity decline. In particular, anthropogenic organic micropollutants (AOM), a diverse group of compounds including pesticides, pharmaceuticals, and industrial chemicals, can significantly impact freshwater organisms. AOM were found to impact the genetic diversity of freshwater species, however, the degree to which AOM cause changes in population genetic structure and allelic richness of freshwater macroinvertebrates remains poorly understood. Here, the impact of AOM on the genetic diversity of the common amphipod Gammarus pulex (Linnaeus, 1758) (clade E) was investigated on a regional scale. The site-specific AOM levels and their toxic potentials were determined in water and G. pulex tissue sample extracts for 34 sites along six rivers impacted by wastewater effluents and agricultural run-off in central Germany. Population genetic parameters were determined for G. pulex from the sampling sites by genotyping 16 microsatellite loci. Genetic differentiation among G. pulex from the studied rivers was strongly associated with geographic distance between sites, but also with differences in site-specific concentrations of AOM. Thus, genetic diversity parameters of G. pulex were found to be related to site-specific AOM levels; allelic richness was significantly negatively correlated to levels of AOM in G. pulex tissue (p < 0.003) and was reduced by up to 22% at sites with increased levels of AOM. This was seen despite a positive relationship between allelic richness and the presence of waste-water effluent. In addition, the inbreeding coefficient of G. pulex from sites with toxic AOM levels was up to 2.5 times higher than in G. pulex from more pristine sites. These results indicate that AOM levels commonly found in European rivers significantly contribute to changes in the genetic diversity of an ecologically relevant indicator species.
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Švara, V., Michalski, S.G., Krauss, M., Schulze, T., Geuchen, S., Brack, W., Luckenbach, T. (2022):
Reduced genetic diversity of freshwater amphipods in rivers with increased levels of anthropogenic organic micropollutants
Evol. Appl. 15 (6), 976 - 991 10.1111/eva.13387