ILPLA   05424
INSTITUTO DE LIMNOLOGIA "DR. RAUL A. RINGUELET"
Unidad Ejecutora - UE
artículos
Título:
Age differential response of Hyalella curvispina to a cadmium pulse: influence of sediment particle size
Autor/es:
GARCÍA M.E.; RODRIGUES CAPÍTULO A. ; FERRARI L.
Revista:
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 2012
ISSN:
0147-6513
Resumen:
In Argentinaperiurbanstreamsfrequentlyreceiveagricultural,livestockandindustrialdischarges. Heavy metalshavebeenfoundinthewatercolumnandsedimentsofnumerouswaterbodiesofthe pampeanregion,atlevelsabovethelimitsestablishedforaquaticlifeprotection.Thisstudyaimedto evaluatetheeffectofacontaminantpulseofcadmiumdischargedintoawater-sedimentsystemof differentparticlesizes,bymeansoflaboratorytestsusingjuvenilesandadultsof Hyalellacurvispina, a native amphipod.Wefoundthatthesubstrateparticlesizewasadeterminingfactorinthetoxicityof cadmiumandthattheadultsof H. curvispina were moresensitivethanjuveniles.Wealsoobserveda temporaldifferencebetweenthetwoagesforthesametypeofsediment.Giventhenatureofthe sedimentsofregionalwaterbodies,itisexpectedthatadischargeofcadmium,evenatconcentrations as lowasthosetestedhere,willaffectthesurvivalofnativeamphipods. PublishedbyElsevierInc. Hyalellacurvispina, a native amphipod.Wefoundthatthesubstrateparticlesizewasadeterminingfactorinthetoxicityof cadmiumandthattheadultsof H. curvispina were moresensitivethanjuveniles.Wealsoobserveda temporaldifferencebetweenthetwoagesforthesametypeofsediment.Giventhenatureofthe sedimentsofregionalwaterbodies,itisexpectedthatadischargeofcadmium,evenatconcentrations as lowasthosetestedhere,willaffectthesurvivalofnativeamphipods. PublishedbyElsevierInc.
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