Chemical contamination in coastal areas alters shape, resistance and composition of carnivorous gastropod shells

Autor(es)

Gouveia, Nayara ; Oliveira, Ana Julya L. A. ; Yokota Harayashiki, Cyntia Ayumi ; Souza, Josiane Carneiro ; Longo, Elson ; Cano, Nilo F. ; Maltez, Heloisa Franca ; Lourenco, Rafael Andre ; Turpo-Huahuasoncco, Klinton, V ; Castro, Italo Braga

• Tipo de documento: Artigo Científico
• Fonte: Chemosphere; v. 307, p. 10-pg., 2022-08-06.

Resumo

Morphological, structural and compositional alterations in shells of molluscs have been proposed as putative biomarkers of chemical contamination in coastal zones. Despite this, few studies were carried out using top predator gastropods which tend to be more susceptible to contamination exposure. Thus, the present study assessed disturbances on shells of Stramonita brasiliensis considering compression resistance and organic and mineralogical matrix composition, related to morphometric alterations. Results showed reductions in compres-sion resistance and organic matrix content associated with higher contaminated sites. In addition, a predomi-nance of calcite polymorphs was seen in shells obtained in polluted areas. Such outputs were consistent with local contamination levels which may have induced the observed alterations. Thus, changes in mollusc shells showed good performance as potential biomarkers of coastal contamination, being probably observed in other species of carnivorous gastropods around the world. (AU)

• Processo FAPESP: 18/08015-0 - Alterações estruturais de conchas e respostas bioquímicas em lapas como biomarcadores de contaminação ambiental
• Beneficiário: Cyntia Ayumi Yokota Harayashiki
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 15/25063-0 - Alterações em conchas de Lottia subrugosa como possível biomarcador para áreas costeiras multi-impactadas
• Beneficiário: Ítalo Braga de Castro
• Modalidade de apoio: Auxílio à Pesquisa - Regular