Water and sediment toxicity and hazard assessment of DCOIT towards neotropical marine organisms

Author(s)

Campos, B. G. ; Moreira, L. B. ; Pauly, G. F. E. ; Cruz, A. C. F. ; Perina, F. C. ; Abreu, F. ; Fillmann, G. ; Abessa, D. M. S.

• Document type: Journal article
• Source: Environmental Pollution; v. 330, p. 9-pg., 2023-05-23.

Abstract

DCOIT is an effective antifouling biocide, which presence in the environment and toxicity towards non-target species has been generating great concern. This study evaluated the waterborne toxicity of DCOIT on marine invertebrates (i.e., survival of brine shrimp Artemia sp., larval development of the sea urchin Echinometra lucunter and the mussel Perna perna), as well as DCOIT-spiked-sediment toxicity on the fecundity rate of the copepod Nitrocra sp. And the mortality of the amphipod Tiburonella viscana. The data outcomes were used to calculate environmental hazards and risks, which were compared to their corresponding values obtained from temperate regions. Waterborne toxicity can be summarized as follows: Artemia sp. (LC50-48h = 163 (135-169) & mu;g/L), E. lucunter (EC50-36h = 33.9 (17-65) & mu;g/L), and P. perna (EC50-48h = 8.3 (7-9) & mu;g/L). For whole-sediment toxicity, metrics were calculated for T. viscana (LC50-10d = 0.5 (0.1-2.6) & mu;g/g) and Nitrocra sp, (EC50-10d = 200 (10-480) & mu;g/kg). The DCOIT hazard was assessed for both tropical and non-tropical pelagic organisms. The predicted no -effect concentration (PNEC) for tropical species (0.19 & mu;g/L) was 1.7-fold lower than that for non-tropical or-ganisms (0.34 & mu;g/L). In whole-sediment exposures, DCOIT presented a PNEC of 0.97 & mu;g/kg, and the risk quo-tients (RQs) were >1 for areas with constant input of DCOIT such as ports ship/boatyards, marinas, and maritime traffic zones of Korea, Japan, Spain, Malaysia, Indonesia, Vietnam, and Brazil. The presented data are important for supporting the establishment of policies and regulations for booster biocides worldwide. (AU)

• FAPESP's process: 16/02029-4 - Toxicity and ecological risks of antifouling paints of third generation
• Grantee: Ana Carolina Feitosa Cruz
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 21/06167-0 - Toxicity of corrosion inhibitors compounds on a neotropical mussel (Perna perna)
• Grantee: Ana Carolina Feitosa Cruz
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 20/00068-8 - Whole transcriptome analysis of benthic organisms as models to estimate toxic effects of contaminated sediments in marine environments
• Grantee: Lucas Buruaem Moreira
• Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants
• FAPESP's process: 20/03004-0 - Assessment of bioaccumulation and toxicity of innovative antifouling nanomaterials on tropical and neotropical marine invertebrates
• Grantee: Denis Moledo de Souza Abessa
• Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
• FAPESP's process: 21/08471-9 - Whole transcriptome analysis of benthic organisms as models to estimate toxic effects of contaminated sediments in marine environments
• Grantee: Lucas Buruaem Moreira
• Support Opportunities: Scholarships in Brazil - BIOTA - Young Researchers
• FAPESP's process: 18/23279-4 - Beyond conventional endpoints: evaluation of toxic effects in Danio rerio and Corbicula fluminea associated with water and sediments contaminated by the mining tailings released after the rupture of the Fundão Dam, at Rio Doce (ES - MG)
• Grantee: Guacira de Figueiredo Eufrasio Pauly
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/10211-0 - Ecotoxicological study of the anti-fouling biocide Sea-Nine in neotropical marine invertebrates.
• Grantee: Bruno Galvão de Campos
• Support Opportunities: Scholarships in Brazil - Doctorate