INVESTIGADORES
BIGATTI Gregorio
artículos
Título:
Transplant bioassay induce different imposex responses in two Stramonita species
Autor/es:
BRAGA DE CASTRO,I.; DE ALMEIDA ROCHA-BARREIRA, C; FERNANDEZ M.A.; G. BIGATTI
Revista:
MARINE BIOLOGY RESEARCH
Editorial:
TAYLOR & FRANCIS AS
Referencias:
Año: 2012 vol. 8 p. 331 - 338
ISSN:
1745-1000
Resumen:
A bioassay to study differential specific responses in imposex development due to marine organotin pollution was done bytransplanting specimens of the gastropods Stramonita haemastoma and Stramonita rustica from an imposex-free area to amarina with high marine traffic inside a ship repair yard, a place where local populations of S. haemastoma were known toshow high indices of imposex. Three hundred sexually mature, imposex-free specimens of each species were kept in cagesfor 120 days, and samples of 30 individuals were periodically analysed for imposex development. Shell length, penis lengthand vas deferens development were recorded and imposex development indices (% imposex, RPLI and VDSI) werecalculated. Our results indicated that imposex induction in S. haemastoma is faster and more sensitive than in S. rustica.Imposex incidence in S. haemastoma could be a useful tool for monitoring marine pollution by organotin compounds inharbours along the Brazilian coast.
