Population structure and insecticide response of Gammarus spp. in agricultural and upstream forested sites of small streams

Environmental Sciences Europe, Год журнала: 2023, Номер 35(1)

Опубликована: Июнь 3, 2023

Abstract Exposure to pesticides may cause adaptation not only in agricultural pests and pathogens, but also non-target organisms. Previous studies mainly searched for adaptations organisms pesticide-polluted sites. However, propagate heritable pesticide effects, such as increased tolerance, non-exposed populations through gene flow. We examined the tolerance—as one of pre-assumptions local adaptation—of freshwater crustacean Gammarus spp. (at genus level reflecting gammarid community). The tolerance was quantified acute toxicity tests using insecticide imidacloprid. Gammarids were sampled at sites (termed agriculture), least impacted upstream refuge) transitional edge) six small streams south-west Germany. Furthermore, we population genetic structure fossarum energy reserves (here lipid content) G. well three site types (i.e. agriculture, edge refuge). found significantly lower imidacloprid from compared refuge sites, potentially due higher environmental stress indicated by a slightly content per mg tissue. no differences between populations, indicating propagation effects edges. among showed significant differentiation streams, within stream across types. suggest that high flow each hindered resulted similar (pre)adaptations levels types, although they exhibited different pollution. Further on target genes (e.g., conferring tolerance), fitness phenotypes particular are required adjacent pristine ecosystems detect potential propagations effects.

Язык: Английский

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Genomic and species diversity patterns across multiple trophic levels in riverscapes

Oikos, Год журнала: 2023, Номер 2023(9)

Опубликована: Июнь 15, 2023

Testing whether intra‐ and interspecific biodiversity facets co‐vary spatially across trophic levels is of utmost importance to generalize processes driving patterns in natural landscapes. Similar are expected act on diversity, which should lead positive co‐variation between genetic species diversity. Although this prediction has been verified within levels, it rarely tested multiple levels. To meet challenge, we focused a riverine freshwater ecosystem sampled (genomic diversity) (species data three levels: riparian trees, benthic macroinvertebrates fishes. For each level, quantified α‐ β‐diversity at both the (SNP diversity populations Alnus glutinosa , Gammarus sp. or Phoxinus dragarum ) communities). We first for global spatial facets. then relevant environmental parameters similarly affected estimate explained potential among components. did not evidence any facets, neither nor β‐diversity. found that sites situated Western part sampling area had higher α‐diversities, highly connected lower β‐diversities, holds true all Nonetheless, effects other predictors were specific component, likely explaining absence Our study demonstrates rivers can be hard rather idiosyncratic, even though few might have consistent impacts components

Язык: Английский

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Fish germ cell cryobanking and transplanting for conservation

Molecular Ecology Resources, Год журнала: 2023, Номер unknown

Опубликована: Сен. 15, 2023

Abstract The unprecedented loss of global biodiversity is linked to multiple anthropogenic stressors. New conservation technologies are urgently needed mitigate this loss. rights, knowledge and perspectives Indigenous peoples in conservation—including the development application new technologies—are increasingly recognised. Advances germplasm cryopreservation germ cell transplantation (termed ‘broodstock surrogacy’) techniques offer exciting tools preserve biodiversity, but their has been underappreciated. Here, we use teleost fishes as an exemplar group outline (1) power these genome‐wide genetic diversity, (2) need apply a genomic lens when selecting individuals for cryobanking broodstock surrogacy (3) value considering cultural significance resources. We conclude by discussing opportunities challenges conserving threatened fish beyond.

Язык: Английский

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Human-induced stresses on the rivers beyond their assimilation and regeneration capacity

Elsevier eBooks, Год журнала: 2022, Номер unknown, С. 281 - 298

Опубликована: Янв. 1, 2022

Язык: Английский

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A strategic sampling design revealed the local genetic structure of cold-water fluvial sculpin: a focus on groundwater-dependent water temperature heterogeneity

Heredity, Год журнала: 2021, Номер 127(4), С. 413 - 422

Опубликована: Авг. 20, 2021

Язык: Английский

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