Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México

The effects of cadmium (Cd) and copper (Cu) on cultured juveniles of Capitella sp. Y were investigated. Seven-day old juveniles were exposed to 13 (control), 60, 160, 240 and 340 mg Cd L-1 and 17 (control), 50, 120 and 150 mg Cu L-1 for 30 days. Mortality significantly increased with increasing Cu c...

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Autores principales:	MÉNDEZ,NURIA, GREEN-RUIZ,CARLOS
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2005
Materias:	bioassays marine worms mortality juveniles heavy metals
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000400009
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spelling	oai:scielo:S0716-078X20050004000092006-03-16Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, MéxicoMÉNDEZ,NURIAGREEN-RUIZ,CARLOS bioassays marine worms mortality juveniles heavy metals The effects of cadmium (Cd) and copper (Cu) on cultured juveniles of Capitella sp. Y were investigated. Seven-day old juveniles were exposed to 13 (control), 60, 160, 240 and 340 mg Cd L-1 and 17 (control), 50, 120 and 150 mg Cu L-1 for 30 days. Mortality significantly increased with increasing Cu concentrations, but in Cd exposures, it was only evident at 340 mg L-1. Body size and faecal pellet production were reduced earlier in juveniles exposed to Cu than those exposed to Cd, especially in the higher Cu concentrations. These facts indicate that juveniles are more sensitive to Cu in terms of mortality, feeding and growth. Haemoglobin production was inhibited due to the scarcity of food in the experimental sediment rather than to metal exposure. Tube building was not affected by the presence of metals or by the scarcity of food. This study suggests that Cu concentrations from 50 to 150 mg L-1 and 340 mg L-1 of Cd could affect the population dynamics of this species in natural ecosystemsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.78 n.4 20052005-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000400009en10.4067/S0716-078X2005000400009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bioassays marine worms mortality juveniles heavy metals
spellingShingle	bioassays marine worms mortality juveniles heavy metals MÉNDEZ,NURIA GREEN-RUIZ,CARLOS Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
description	The effects of cadmium (Cd) and copper (Cu) on cultured juveniles of Capitella sp. Y were investigated. Seven-day old juveniles were exposed to 13 (control), 60, 160, 240 and 340 mg Cd L-1 and 17 (control), 50, 120 and 150 mg Cu L-1 for 30 days. Mortality significantly increased with increasing Cu concentrations, but in Cd exposures, it was only evident at 340 mg L-1. Body size and faecal pellet production were reduced earlier in juveniles exposed to Cu than those exposed to Cd, especially in the higher Cu concentrations. These facts indicate that juveniles are more sensitive to Cu in terms of mortality, feeding and growth. Haemoglobin production was inhibited due to the scarcity of food in the experimental sediment rather than to metal exposure. Tube building was not affected by the presence of metals or by the scarcity of food. This study suggests that Cu concentrations from 50 to 150 mg L-1 and 340 mg L-1 of Cd could affect the population dynamics of this species in natural ecosystems
author	MÉNDEZ,NURIA GREEN-RUIZ,CARLOS
author_facet	MÉNDEZ,NURIA GREEN-RUIZ,CARLOS
author_sort	MÉNDEZ,NURIA
title	Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
title_short	Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
title_full	Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
title_fullStr	Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
title_full_unstemmed	Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México
title_sort	preliminary observations of cadmium and copper effects on juveniles of the polychaete capitella sp. y (annelida: polychaeta) from estero del yugo, mazatlán, méxico
publisher	Sociedad de Biología de Chile
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000400009
work_keys_str_mv	AT mendeznuria preliminaryobservationsofcadmiumandcoppereffectsonjuvenilesofthepolychaetecapitellaspyannelidapolychaetafromesterodelyugomazatlanmexico AT greenruizcarlos preliminaryobservationsofcadmiumandcoppereffectsonjuvenilesofthepolychaetecapitellaspyannelidapolychaetafromesterodelyugomazatlanmexico
_version_	1718439582138105856

Preliminary observations of cadmium and copper effects on juveniles of the polychaete Capitella sp. Y (Annelida: Polychaeta) from Estero del Yugo, Mazatlán, México

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