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Mining tailings alter insects: revealing fluctuating asymmetry in the caddisfly Smicridea coronata.
de Andrade Soares, Helena Maura; Rocha, Isabela Cristina; Paprocki, Henrique; Fernandes, Geraldo Wilson.
Afiliación
  • de Andrade Soares HM; Programa de Pós-Graduação Em Ecologia, Conservação E Manejo da Vida Silvestre, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. helenamasoares@gmail.com.
  • Rocha IC; Laboratório de Ecologia Evolutiva & Biodiversidade, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. helenamasoares@gmail.com.
  • Paprocki H; Tagma Meio Ambiente Ltda., Belo Horizonte, MG, Brazil.
  • Fernandes GW; Museu de Ciências Naturais, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, MG, Brazil.
Environ Monit Assess ; 196(6): 531, 2024 May 10.
Article en En | MEDLINE | ID: mdl-38724710
ABSTRACT
The Samarco/Vale/BHP mine tailing dam breach that took place in Minas Gerais, southeastern Brazil, in 2015, deposited high concentrations of metals and metalloids in the Rio Doce basin, severely impacting freshwater and riverine forest ecosystems. To assess developmental instability of caddisflies in response to the environmental impacts of the dam breach, we investigated the fluctuating asymmetry (FA) in the species Smicridea (Rhyacophylax) coronata (Trichoptera Hydropsychidae). FA was assessed at individual and populational scales using geometric morphometric methods in the cephalic capsule and mandibles of larvae and also on the forewings of adults, both collected under the impacted condition, and under the least disturbed condition. The levels of FA increased in response to stressors on the forewings at the populational scale, and on the mandibles, at individual scale. These morphological variations in the larval and adult stages may lead to detrimental effects and result in high mortality rates as well as lower adult fitness. Trichoptera forewings are revealed as suitable traits for assessing FA, holding potential for applications in biomonitoring programs. Directional asymmetry levels were higher than FA levels for all traits, and this correlation could be explained by a transition from fluctuating to directional asymmetry in the presence of heightened disturbance. Our results validate the relationship between the impacts from the dam breach and increased developmental instability in this species with likely cascade effects on the insect community.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Monitoreo del Ambiente / Larva / Minería Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos
Texto completo
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Monitoreo del Ambiente / Larva / Minería Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos