Ecotoxicology of mercury in tropical forest soils: Impact on earthworms

Buch, Andressa Cristhy; Brown, G. G.; Correia, Maria Elizabeth Fernandes; Lourençato, Lúcio Fábio; Silva-Filho, Emmanoel V.

doi:10.1016/j.scitotenv.2017.02.150

Cited by 51 publications

(24 citation statements)

References 50 publications

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“…Similarly, P. corethrurus mortality, growth and cocoon production were affected only at high mercury (Hg) concentrations (50 and 100 μg g −1 soil) after 56 days in a laboratory experiment with soils from forested sites in French Guiana (Da Silva et al, 2016). Buch et al (2017) worked on soils of two Brazilian forest conservation units that had been polluted by Hg due to atmospheric deposition. They found cocoon production and earthworm growth to be affected at much lower concentrations of Hg i.e., 8 μg g −1 than that reported by Da Silva et al (2016).…”

Section: External Characteristicsmentioning

confidence: 99%

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Taheri

Pelosi

Dupont

2018

Soil Biology and Biochemistry

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A B S T R A C TExotic peregrine earthworms are often considered to cause environmental harm and to have a negative impact on native species, but, as ecosystem engineers, they enhance soil physical properties. Pontoscolex corethrurus is by far the most studied morphospecies and is also the most widespread in tropical areas. The term of morphospecies is used in this review because P. corethrurus may in fact constitute a complex of cryptic species. This earthworm is found in a wide range of habitats, from apparently pristine to any kind of human-disturbed environment. This review synthesizes 265 studies describing the distribution, morphology, biological and ecological traits of this morphospecies, as well as its impacts on soil conditions and communities. We then discuss the characteristics necessary for this specific morphospecies to become a successful colonizer throughout the world and the positive and negative effects it can have on the ecosystems that it has invaded. We emphasize the lack of knowledge of P. corethrurus reproductive mode and ploidy level, of its population genetics, and of the potential existence of cryptic species. To finish, we highlight the fact that data on P. corethrurus interactions with non-earthworm soil macrofauna are scarce.

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Section: External Characteristicsmentioning

confidence: 99%

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Taheri

Pelosi

Dupont

2018

Soil Biology and Biochemistry

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“…According to a survey of environmental Hg levels conducted in 18 prefectures of Japan, the residual soil THg concentrations varied between 0.002 mg kg -1 and 78.6 mg kg -1 (Nakagawa, 2008). However, it is difficult to find studies analyzing THg and MeHg concentrations in earthworms from MSW leachate-contaminated forest soils in the literature; the general consensus of previous studies is that atmospheric Hg deposition is the major source of Hg in forest soils (Rieder et al, 2011, Buch et al, 2017.…”

Section: Mercury Concentrations In Forest Soils and Native Earthwormsmentioning

confidence: 99%

“…Mercury can be accumulated and amplified in predatory animals and humans through the food chain, causing many hazardous health effects, such as neurotoxicity, mortality, and reproductive toxicity (Scheuhammer et al, 2007). It is also considered one of the most toxic nonessential contaminants to human health and the environment (Buch et al, 2017). Hence, the level of Hg in the environment has been controlled by many countries and international organizations, such as the World Health Organization (WHO), United Nations Environment Programme (UNEP), and Food and Agriculture Organiza-tion (FAO) (Ding et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Earthworms are considered useful bio-indicators for assessing soil health and quality in numerous studies of contaminated sites and in laboratory experiments (Nannoni et al, 2011;Teršič and Gosar, 2012). They spend most of their life in soil and play an important role in soil structure maintenance; approximately 80% of soil fauna biomass is constituted by earthworms in terrestrial ecosystems (Buch et al, 2017). Earthworms can be sampled easily, have proven to be a good biological model, and can accumulate trace metals from soil through direct dermal contact and/or diet uptake by gut ingestion from soils.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of mercury and methylmercury bioaccumulation in earthworms (<i>Bimastus parvus</i>) native to landfill-leachate-contaminated forest soil

Arizono

Ji³

et al. 2018

J. Toxicol. Sci.

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Total mercury (THg) and methylmercury (MeHg) bioaccumulation was explored in the Bimastus parvus species of earthworm (B. parvus) native to the leachate-contaminated forest soils around a Hg-polluted traditional landfill in Japan. General soil properties and concentrations of THg and MeHg in forest soils and in B. parvus were determined. The results indicated that the average THg concentrations in B. parvus and in forest soils in the leachate-contaminated sites were 10.21 and 14.90 times higher than those in the reference sites, respectively, whereas similar average MeHg concentrations were observed in forest soils (< 0.01 mg kg) and in B. parvus (0.100-0.114 mg kg) across all sampled sites. The average bioaccumulation factors of THg in B. parvus (BAF) in forest soil were similar between the leachate-contaminated sites and the reference sites. Cluster and regression analyses demonstrated that the B. parvus Hg (THg and MeHg) and soil THg were positively correlated with each other and with soil organic matter (SOM) and clays, but were negatively correlated with sand and hardly correlated with silts and pH in leachate-contaminated forest soils. From these results, it was proposed that Hg exposure to food chains is possible through B. parvus, because B. parvus showed a high ability to accumulate THg and MeHg in both leachate-contaminated and reference forest soils. Together, these findings indicated that the role of B. parvus in MeHg production is not clear, and it is possible that the MeHg in B. parvus was firstly formed within forest soils and then accumulated in their tissues.

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“…Os bioensaios de toxicidade, em sua maioria, são realizados em regiões temperadas, utilizando-se espécies e condições experimentais representativas dessas regiões, resultando incongruências nos resultados, quando comparados às regiões tropicais. Desta forma, muitos autores recomendam a utilização de espécies nativas em testes ecotoxicológicos sob condições representativas de regiões tropicais (BUCH et al, 2017;GHOSE et al, 2014;HOWE;REICHELT-BRUSHETT;CLARK, 2014;MANSANO et al, 2018;ROCHA et al, 2018b;SILVANO;BEGOSSI, 2016 Além disso, conclui-se que os bioensaios ecotoxicológicos são uma importante ferramenta na complementação das análises de monitoramento de reatores, e que os invertebrados Chironomus sancticaroli, Allonais inaequalis e Daphnia magna apresentam sensibilidade aguda e crônica ao LAS padrão e às amostras do reator, e podem ser recomendados como organismos-teste em bioensaios de no monitoramento.…”

Section: Considerações Finaisunclassified

Bioensaios de toxicidade utilizando invertebrados aquáticos em exposição ao Alquilbenzeno Linear Sulfonado

Felipe¹

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Ao Pai Celestial, o Grande Arquiteto do Universo, sempre presente, por todas as oportunidades que me proporcionara, e por sempre ter me oferecido saúde, disposição e força para vencer obstáculos. Aos meus pais, Gilberto Felipe e Vera Júlia Brugnoli Felipe, por todo amor dispensado, por todo apoio e gesto de carinho durante meus anos de doutorado. Obrigado por me ensinarem tudo que sei em minha existência e obrigado por nunca terem desistido de mim. Ao meu irmão Danilo Rafael Felipe, à minha cunhada Flávia Gásparo Felipe e ao meu sobrinho Felipe Gásparo Felipe, por todo gesto de carinho proporcionado, aos almoços de domingo reunidos na casa do pai, isso sempre fez toda a diferença na minha vida. À minha família de São Carlos, Sanca Badalada, por terem dividido comigo quatro anos de amor, partilha, companheirismo e festinhas, afinal não é só de trabalho que se vive uma doutoranda. Ao meu orientador Professor Juliano José Corbi, possuidor de inigualável saber, pela oportunidade, presteza, atenção e orientação durante meu período de doutorado. Obrigado por cada "puxão de orelha" que me impulsionaram a dar o máximo de mim. Obrigada também pelo companheirismo nesses anos de trabalho, foi muito bom trabalhar com você. À professora Maria Bernadete Varesche pela possibilidade de trabalho com os reatores e por todo ensinamento. Aos professores Guilherme Gorni e Maria Bernadete Varesche, pelas sugestões e contribuições na banca de qualificação.

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Ecotoxicology of mercury in tropical forest soils: Impact on earthworms

Cited by 51 publications

References 50 publications

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Comparison of mercury and methylmercury bioaccumulation in earthworms (<i>Bimastus parvus</i>) native to landfill-leachate-contaminated forest soil

Bioensaios de toxicidade utilizando invertebrados aquáticos em exposição ao Alquilbenzeno Linear Sulfonado

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