Assessment of tributyltin contamination based on imposex in Stramonita rustica (Mollusca: Gastropoda) along southern Bahia coast, northeastern Brazil.

Autor: Zeidan GC; Postgraduate Animal Science Program, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brazil., Boehs G; Postgraduate Animal Science Program, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brazil.
Jazyk: angličtina
Zdroj: Brazilian journal of biology = Revista brasleira de biologia [Braz J Biol] 2017 Mar; Vol. 77 (1), pp. 185-190. Date of Electronic Publication: 2016 Aug 15.
DOI: 10.1590/1519-6984.15115
Abstrakt: This study investigated the effects of tributyltin (TBT) on the morphology of the genital system of the gastropod Stramonita rustica in southern Bahia, Brazil. For this, 330 specimens were collected during the summer of 2014 at eight sampling points to ascertain whether male sex organs had developed in addition to the complete female genital tract in females (= imposex). The analyses were made under a stereoscopic microscope. Imposex and their associated indexes, and the sterile females, exhibited the highest rates in harbors and shipyards areas. Despite the total ban of TBT in anti-fouling paints on a global scale since 2003, the results of this and other studies indicate the continued use of those paints on the Brazilian coast. This shows the inefficiency of existing legislation and the need to strengthen enforcement of the ban.
Databáze: MEDLINE