Temporal evolution of imposex and butyltin contamination in Gemophos viverratus from São Vicente (Cabo Verde) - a countercurrent trend on the world scenario

Diana M Gomes; Susana Galante-Oliveira; Corrine Almeida; Fiamma E L Abreu; Ítalo Braga Castro; Gilberto Fillmann; Carlos M Barroso

doi:10.1016/j.marpolbul.2021.112633

Temporal evolution of imposex and butyltin contamination in Gemophos viverratus from São Vicente (Cabo Verde) - a countercurrent trend on the world scenario

Mar Pollut Bull. 2021 Sep:170:112633. doi: 10.1016/j.marpolbul.2021.112633. Epub 2021 Jun 23.

Authors

Diana M Gomes¹, Susana Galante-Oliveira², Corrine Almeida³, Fiamma E L Abreu⁴, Ítalo Braga Castro⁵, Gilberto Fillmann⁴, Carlos M Barroso²

Affiliations

¹ Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. Electronic address: dianamg@ua.pt.
² CESAM - Centre for Environmental and Marine Studies, Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
³ Universidade Técnica do Atlântico (UTA), Instituto de Engenharia e Ciências do Mar (ISECMAR), CP.163 - Campus de Ribeira de Julião, São Vicente, Cabo Verde.
⁴ Instituto de Oceanografia, Universidade Federal do Rio Grande (IO-FURG), Av. Itália s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
⁵ Institute of Marine Sciences, Universidade Federal de São Paulo (IMAR-UNIFESP), Rua Maria Máximo 168, 11030-100 Santos, SP, Brazil.

PMID: 34171630
DOI: 10.1016/j.marpolbul.2021.112633

Abstract

Organotin (OT) based Antifouling Systems (AFS) were globally banned by the AFS Convention since 2008, but the Republic of Cabo Verde did not ratify this Convention, nor did it develop a national legislation to control OT-AFS. Gemophos viverratus imposex and butyltin tissue contamination were assessed around the São Vicente Island (Cabo Verde) in 2019 and compared with the data available from 2012. The vas deferens sequence index (VDSI), the relative penis length (RPL), the percentage of females with imposex (%I) and the percentage of sterilized females (%S) in 2019 ranged from 0 to 4.0, 0-84.4%, 0-100% and 0-5.1%, respectively, whilst TBT reached maximum values of ≈30 ng TBT-Sn g^-1 dw in the whelk tissues. These values are very similar to those registered in 2012, which indicates that TBT pollution has not decreased over the years, in contrast to the declining trend observed worldwide.

Keywords: Butyltins; Cabo Verde; Gemophos viverratus; Imposex; TBT pollution.

MeSH terms

Animals
Cabo Verde
Disorders of Sex Development* / chemically induced
Environmental Monitoring
Female
Gastropoda*
Male
Organotin Compounds* / toxicity
Trialkyltin Compounds* / toxicity
Water Pollutants, Chemical* / analysis

Substances

Organotin Compounds
Trialkyltin Compounds
Water Pollutants, Chemical