Microevolution due to pollution in amphibians: A review on the genetic erosion hypothesis

Fasola, Emanuele; Ribeiro, Rui; Lopes, Isabel

doi:10.1016/j.envpol.2015.04.027

Cited by 25 publications

(20 citation statements)

References 229 publications

(303 reference statements)

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“…Nevertheless, far more accurately designed empirical studies are required to improve the current knowledge on the evolutionary trends under stress scenarios promoted by climate change (Gienapp et al., ; Merilä & Hendry, ). Importantly, while genetic change can indeed extend the adjusting capacity of populations facing environmental fluctuation as allowed by phenotypic plasticity (see Merilä & Hendry, for a comprehensive review on the interplay of these two processes, and Scheiner, and Scheiner, Barfield, & Holt, for key aspects regarding genetic assimilation), selection of better fit phenotypes can be costly, for example by reducing intra‐population genetic variability through genetic erosion (e.g., Fasola, Ribeiro, & Lopes, ; Ribeiro & Lopes, ) or by trading‐off with decreased tolerance to new stressors (Janssens, Van Dinh, Debecker, Bervoets, & Stoks, ; Kelly, DeBiasse, Villela, Roberts, & Cecola, ; Venâncio, Ribeiro, Soares, & Lopes, ). In this context, genetic changes are normally understood as those involving the alteration of gene sequences, that is, the alteration of frequencies of different alleles.…”

Section: Adaptive Strategies To Climate‐change‐related Stressorsmentioning

confidence: 99%

“…Hendry, 2014 for a comprehensive review on the interplay of these two processes, andScheiner, 2014 andScheiner, Barfield, &Holt, 2017 for key aspects regarding genetic assimilation), selection of better fit phenotypes can be costly, for example by reducing intra-population genetic variability through genetic erosion (e.g.,Fasola, Ribeiro, & Lopes, 2015;Ribeiro & Lopes, 2013) or by trading-off with decreased tolerance to new stressors(Janssens, Van Dinh, Debecker, Bervoets, & Stoks, 2014;Kelly, DeBiasse, Villela, Roberts, & Cecola, 2016;Venâncio, Ribeiro, Soares, & Lopes, 2018). In this context, genetic changes are normally understood as those involving the alteration of gene sequences, that is, the alteration of frequencies of different alleles.…”

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confidence: 99%

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Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

et al. 2018

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Freshwater ecosystems are amongst the most threatened ecosystems on Earth. Currently, climate change is one of the most important drivers of freshwater transformation and its effects include changes in the composition, biodiversity and functioning of freshwater ecosystems. Understanding the capacity of freshwater species to tolerate the environmental fluctuations induced by climate change is critical to the development of effective conservation strategies. In the last few years, epigenetic mechanisms were increasingly put forward in this context because of their pivotal role in gene-environment interactions. In addition, the evolutionary role of epigenetically inherited phenotypes is a relatively recent but promising field. Here, we examine and synthesize the impacts of climate change on freshwater ecosystems, exploring the potential role of epigenetic mechanisms in both short- and long-term adaptation of species. Following this wrapping-up of current evidence, we particularly focused on bringing together the most promising future research avenues towards a better understanding of the effects of climate change on freshwater biodiversity, specifically highlighting potential molecular targets and the most suitable freshwater species for future epigenetic studies in this context.

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Section: Adaptive Strategies To Climate‐change‐related Stressorsmentioning

confidence: 99%

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confidence: 99%

Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

et al. 2018

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“…Another method is to look at genetic erosion, or the loss of genetic diversity within a species attributable to chemical exposure (Fasola et al. ). This approach suggests that there are several negative impacts that can be used as markers of genetic erosion in amphibians, namely genetic‐fitness correlations, reduced pathogen tolerance, reduced cotolerance to other stressors, loss of phenotypic and environmental plastip, and reduced fitness.…”

Section: In Response: One Perspective From Industrymentioning

confidence: 99%

Evolutionary Toxicology—An Informational Tool for Chemical Regulation?

Oziolor

DeSchamphelaere

Lyon

et al. 2020

Enviro Toxic and Chemistry

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The Challenge:Evolutionary toxicology focuses on the drivers, mechanisms, and outcomes of pollution-driven genetic differentiation among populations. The focal questions address the types of chemical contamination acting as selective pressures; the genetics, epigenetics, and demography of impacted populations; as well as fitness costs and cross-resistances that may follow rapid adaptation. In this field, researchers incorporate tools from environmental chemistry, conservation genetics, population biology, and toxicology to understand the health and stability of impacted populations.Recent studies in evolutionary toxicology have illustrated diverse cases of population-wide adaptation to contamination (killifish, Hyalella, mosquitofish). Adaptation, by definition, is achieved through the localized loss of some individuals and genotypes and, thus, provides singular evidence of losses in biodiversity. Chemical regulations are generally supported by assessments that predict, largely through laboratory studies, the risks associated with chemical exposures. Evolutionary toxicology complements this approach by providing direct evidence of population and community impacts. Recent interest by the Society of Environmental Toxicology and Chemistry working group EVOGENERATE (Evolutionary and Multigenerational Effects of Chemicals) has launched discussions about the utility of evolutionary toxicology studies to inform chemical regulation. To further this discussion, one representative from each of 3 sectors, academia, government, and industry, was asked to provide opinions on the following questions:1) The considerable number of adaptive events reported in recent years suggests that current risk-assessment methods may not be exhaustive. What is risk assessment missing by not incorporating evolutionary toxicology endpoints to inform the regulation of toxic compounds? 2) Changes in the US Toxic Substances Control Act call for attention in 2 major aspects of predictive toxicology: organizational frameworks (e.g., adverse outcomes pathway) and fast screening methods (e.g., Omics, Tox21). Can evolutionary toxicology contribute to these advancements? 3) What needs to be done to make an evolutionary approach more accessible and useful to chemical regulation?

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“…Spielman et al (2004) demonstrated that a reduction in genetic diversity in Drosophila through inbreeding induced the loss of polymorphic disease resistance alleles, causing increased susceptibility to infection (Spielman et al 2004). Decreases in genetic diversity may also be associated with reduced phenotypic plasticity, leaving populations more vulnerable to changing environmental conditions (Fasola et al 2015). Finally, genetic diversity loss through pollution-induced evolutionary rescue may "erode evolutionary potential," making populations more vulnerable to novel environmental challenges (Laroche et al 2002).…”

Section: Loss Of Critical Genetic Variabilitymentioning

confidence: 99%

Chemical and Toxicological Impacts to Cache Slough Following Storm-Driven Contaminant Inputs

Weston

Moschet

Young

et al. 2019

SFEWS

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Chemical and toxicological testing in the Cache Slough complex (the slough) of the North Delta indicated the aquatic biota are exposed to a variety of wastewater-derived food additives, pharmaceuticals, and personal care products in highest concentration during dry periods, and many insecticides, herbicides and fungicides with peak concentrations after winter rains. The insecticide groups currently known to be of greatest toxicological concern are the pyrethroids and the fiproles (i.e., fipronil and its degradation products). After stormwater runoff enters the system via Ulatis Creek, both pesticide groups attained concentrations that posed a threat to aquatic life. When the commonly used testing species, Hyalella azteca, was placed in Cache Slough, toxicity-and, at times, near total mortality-was seen over at least an 8-km reach of Cache Slough that extended from the uppermost end almost to the junction with the Deep Water Ship Channel. Previous work over many years has shown similar results after other winter storms. However, when H. azteca that carried a mutation providing resistance to pyrethroid pesticides were also deployed in the slough, no ill effects were observed, which provided strong evidence that pyrethroids were responsible for toxicity to the non-resistant strain. Abundant resident H. azteca in Cache Slough carry any of four mutations that provide resistance to pyrethroids. They also carry a mutation that provides resistance to organophosphate pesticides, and likely carbamate pesticides as well. After many years of exposure, sensitive genotypes have been nearly eliminated from the system, and replaced by a population unaffected by many insecticides now in common use. We offer a variety of reasons why this shift to a population with mutant genotypes RESEARCH

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Microevolution due to pollution in amphibians: A review on the genetic erosion hypothesis

Cited by 25 publications

References 229 publications

Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

Evolutionary Toxicology—An Informational Tool for Chemical Regulation?

Chemical and Toxicological Impacts to Cache Slough Following Storm-Driven Contaminant Inputs

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