INVESTIGADORES
BIGATTI Gregorio
congresos y reuniones científicas
Título:
Coastal Pollution monitoring in Argentina using Imposex occurrence in marine gastropods.
Autor/es:
PENCHASZADEH, P.E.; BIGATTI, G.; AVERBUJ, A. & CLEDON, M
Lugar:
Vigo, España
Reunión:
Congreso; II CONGRESO de las SOCIEDADES MALACOLOGICAS EUROPEAS; 2002
Resumen:
Imposex is a widespread phenomenon in marine gastropods and more than 120
species are up to date recorded. I t s occurrence is explained by the presence of TBT
(tributyltin) from antifouling paints, and the presence is associated with heavy marine
traffic.
Concentrations of about 0.5 ng/l can induce imposex in meso and neogastropoda.
Imposex was demonstrated for four snails from the SW Atlantic coast. Two near the
Locality of Mar del Plata (Buenos Aires Province) and two in Puerto Madryn (Patagonia).
Locality of Mar del Plata (Buenos Aires Province) and two in Puerto Madryn (Patagonia).
Locality of Mar del Plata (Buenos Aires Province) and two in Puerto Madryn (Patagonia).
SW Atlantic coast. Two near the
Locality of Mar del Plata (Buenos Aires Province) and two in Puerto Madryn (Patagonia).
Buccinanops-monilifer and Adelomelon-brasiliana were studied in Mar del Plata, with an
imposex percentage of 85.7 for the first and between 0 and 100 % for the second. I n
Patagonian species, Buccinanops globulosus registered 100% of imposex, and
imposex percentage of 85.7 for the first and between 0 and 100 % for the second. I n
Patagonian species, Buccinanops globulosus registered 100% of imposex, and
imposex percentage of 85.7 for the first and between 0 and 100 % for the second. I n
Patagonian species, Buccinanops globulosus registered 100% of imposex, and
and Adelomelon-brasiliana were studied in Mar del Plata, with an
imposex percentage of 85.7 for the first and between 0 and 100 % for the second. I n
Patagonian species, Buccinanops globulosus registered 100% of imposex, andBuccinanops globulosus registered 100% of imposex, and
Odontocymbiola magellanica registered between 35% and 100% imposex depending on
the zone; in zones with heaviest marine traffic the percentage was higher. All the
observations were confirmed by histological sections observed under the microscope.
the zone; in zones with heaviest marine traffic the percentage was higher. All the
observations were confirmed by histological sections observed under the microscope.
the zone; in zones with heaviest marine traffic the percentage was higher. All the
observations were confirmed by histological sections observed under the microscope.
registered between 35% and 100% imposex depending on
the zone; in zones with heaviest marine traffic the percentage was higher. All the
observations were confirmed by histological sections observed under the microscope.