of the effects of the metals Cd, Cr, Pb and their
on the filtration and oxygen consumption rates in
scallop, Argopecten ventricosus juveniles
S. Sobrino-Figueroa1* and? Carlos C?ceres-Martinez2
Alejandro Villalobos, Departamento de Hidrobiologia. Universidad Aut?noma
San. Rafael Atlixco #186 Col. Vicentina C.P. 09340? M?xico D.F.
de Cultivo de Moluscos, Universidad de Baja California Sur, Unidad
a Pichilingue Km 18. La Paz, B.C.S.
Author E-mail: firstname.lastname@example.org
20 January 2011
05 March 2013
05 September 2013
this work, we evaluated the effect of sublethal concentrations ( LC25,
LC10 and LC5) of cadmium, chromium, lead, and their
mixture on the filtration rate and oxygen consumption rate of Catarina
scallop, Argopecten ventricosus (Sowerby, 1842),? juveniles, in order
to evaluate the use of these biomarkers as a reliable tool in environmental
monitoring studies, because these metals have been found at high levels in
water and sediments in the Mexican Pacific systems. An inverse dose-response
relationship was observed when metal concentration and exposure time
increased, the filtration rate and oxygen consumption rate reduced. The
physiological responses evaluated in this study were sufficiently sensitive
to detect alterations in the organisms at 0.014 mg l-1 Cd, 0.311
mg l-1 Cr, 0.125 mg l-1 Pb and 0.05 mg l-1
Cd + Cr + Pb? at 24 and 72 hrs. Cd showed the most drastic effect. The
Catarina scallop juveniles were more sensitive to Cd, Cr and Pb as compared
to other bivalves. The biomarkers evaluated are a reliable tool to carry out
environmental monitoring studies.
ventricosus, Filtration rate, Heavy metal effects, Oxygen consumption
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