title: Pugilina morio L., a new imposex exhibitor from South American estuarine environments: approach for a non-lethal method to evaluate imposex.
abstract: This is the first report on imposex occurrence in Pugilina morio. Imposex levels in P. morio from Ceará River Estuary were assessed by a non-lethal method. The obtained imposex parameters were: percentage = 37.1 %, female penis length index (FPLI) = 0.93 mm, relative penis length index (RPLI) = 6.5 %, and vas deferens sequence index (VDSI) = 1.0. Because imposex is induced by tributyltin, and P. morio is widely distributed on the East coast of South America, the species can be used as a tributyltin contamination sentinel in these estuaries. Additionally, a non-lethal method of evaluating imposex minimized the impact on the population of P. morio from sample collection, as all organisms were returned to the environment.
authors.affiliation: Laboratório de Zoobentos do Instituto de Ciências do Mar, Universidade Federal do Ceará, Av. da Abolição, 3207, Bairro Meireles, 60165-081 Fortaleza, CE, Brasil.
authors.forename: Deyse
authors.initials: D
authors.lastname: de Azevedo
authors.forename: Cristina
authors.initials: C
authors.lastname: de Almeida Rocha-Barreira
authors.forename: Helena
authors.initials: H
authors.lastname: Matthews-Cascon
authors.forename: Ítalo Braga
authors.initials: ÍB
authors.lastname: Castro
mesh_terms: D000818:Animals; D012734:Disorders of Sex Development / Q000139:chemically induced / Q000453:epidemiology / Q000662:veterinary*; D004784:Environmental Monitoring / Q000379:methods*; D063366:Estuaries; D005260:Female; D049851:Gastropoda / Q000502:physiology*; D008297:Male; D014220:Trialkyltin Compounds / Q000032:analysis / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity
chemical_list: D014220:Trialkyltin Compounds; D014874:Water Pollutants, Chemical; C011559:tributyltin