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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mollusk shell alterations resulting from coastal contamination and other environmental factors

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Yokota Harayashiki, Cyntia Ayumi [1] ; Marquez, Federico [2, 3] ; Cariou, Elsa [4] ; Castro, Italo Braga [1]
Total Authors: 4
[1] Univ Fed Sao Paulo UNIFESP, Dept Ciencias Mar, Rua Carvalho Mendonca 144, BR-11070100 Santos, SP - Brazil
[2] LARBIM IBIOMAR CCT CONICET CENPAT, CENPAT, Bvd Brown 2915, U9120ACV, Puerto Madryn, Chubut - Argentina
[3] Univ Nacl Patagonia San Juan Bosco UNPSJB, Fac Ciencias Nat, Bvd Brown 3051, U9120ACV, Puerto Madryn, Chubut - Argentina
[4] Univ Nantes, Observ Universe Sci Nantes Atlantique, Campus Lombarderie, 2 Rue Houssiniere, F-44322 Nantes - France
Total Affiliations: 4
Document type: Journal article
Source: Environmental Pollution; v. 265, n. B OCT 2020.
Web of Science Citations: 0

Effects of contamination on aquatic organisms have been investigated and employed as biomarkers in environmental quality assessment for years. A commonly referenced aquatic organism, mollusks represent a group of major interest in toxicological studies. Both gastropods and bivalves have external mineral shells that protects their soft tissue from predation and desiccation. These structures are composed of an organic matrix and an inorganic matrix, both of which are affected by environmental changes, including exposure to hazardous chemicals. This literature review evaluates studies that propose mollusk shell alterations as biomarkers of aquatic system quality. The studies included herein show that changes to natural variables such as salinity, temperature, food availability, hydrodynamics, desiccation, predatory pressure, and substrate type may influence the form, structure, and composition of mollusk shells. However, in the spatial and temporal studies performed in coastal waters around the world, shells of organisms sampled from multi-impacted areas were found to differ in the form and composition of both organic and inorganic matrices relative to shells from less contaminated areas. Though these findings are useful, the toxicological studies were often performed in the field and were not able to attribute shell alterations to a specific molecule. It is known that the organic matrix of shells regulates the biomineralization process; proteomic analyses of shells may therefore elucidate how different contaminants affect shell biomineralization. Further research using approaches that allow a clearer distinction between shell alterations caused by natural variations and those caused by anthropogenic influence, as well as studies to identify which molecule is responsible for such alterations or to determine the ecological implications of shell alterations, are needed before any responses can be applied universally. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 15/25063-0 - Shell alterations in Lottia subrugosa as putative biomarker for multi-impacted coastal areas
Grantee:Ítalo Braga de Castro
Support type: Regular Research Grants
FAPESP's process: 16/50409-0 - Shell alterations in gastropod mollusks as putative biomarker for multi-impacted coasted areas
Grantee:Ítalo Braga de Castro
Support type: Regular Research Grants
FAPESP's process: 18/08015-0 - Shell structural alterations and biochemical responses in limpets as biomarkers of environmental contamination
Grantee:Cyntia Ayumi Yokota Harayashiki
Support type: Scholarships in Brazil - Post-Doctorate