Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum

Numerous studies have shown that the swimming performance parameters of fish may be useful indicators of their environmental stress. The swimming speed was evaluated in two Pampean species and its alteration as a result of their exposure to sublethal Cadmium concentrations. The swimming speed was ca...

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Autores principales: Eissa, B. L., Ossana, Natalia A., Salibian, Alfredo, Ferrari, Lucrecia, Pérez, R. H
Formato: Articulo
Lenguaje:Español
Publicado: 2009
Materias:
Ciencias Naturales
velocidad de nado
cadmio subletal
estrés
Astyanax fasciatus
Australoheros facetum
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/68195
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-68195
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
velocidad de nado
cadmio subletal
estrés
Astyanax fasciatus
Australoheros facetum
spellingShingle Ciencias Naturales
velocidad de nado
cadmio subletal
estrés
Astyanax fasciatus
Australoheros facetum
Eissa, B. L.
Ossana, Natalia A.
Salibian, Alfredo
Ferrari, Lucrecia
Pérez, R. H
Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
topic_facet Ciencias Naturales
velocidad de nado
cadmio subletal
estrés
Astyanax fasciatus
Australoheros facetum
description Numerous studies have shown that the swimming performance parameters of fish may be useful indicators of their environmental stress. The swimming speed was evaluated in two Pampean species and its alteration as a result of their exposure to sublethal Cadmium concentrations. The swimming speed was calculated from a daily registry of the distance and the time of displacement of fish by means of special software. Juveniles specimens of Astyanax fasciatus and Australoheros facetum were used in the assays; fish were acclimated during 7 days in aereated fresh-water (FW), at constant temperature (20 ± 1ºC) and photoperiod (12D:12N). The experimental design contemplated three successive periods: Control (4 days in FW), Exposure (4 days in FW + 0.3 and 0.5 mg Cd L-1) and Recovery (7 days in FW); simultaneously the speed of individuals maintained in FW during 15 days (CoP) was determined. The swimming speed in both species increased in the Exposure period. After transfer to clean media (Recovery period), the altered values in A. facetum, exhibited a slight tendency to recovery (but without reaching the basal values registered in the Control period). In A. fasciatus a clear cut recovery response was registered in fish exposed to 0.3 mg. L-1 while in animals exposed to the highest concentration of Cd no recovery was registered. These differences were interpreted as evidences of dissimilar uptake and depuration rates of the toxic.
format Articulo
Articulo
author Eissa, B. L.
Ossana, Natalia A.
Salibian, Alfredo
Ferrari, Lucrecia
Pérez, R. H
author_facet Eissa, B. L.
Ossana, Natalia A.
Salibian, Alfredo
Ferrari, Lucrecia
Pérez, R. H
author_sort Eissa, B. L.
title Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
title_short Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
title_full Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
title_fullStr Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
title_full_unstemmed Cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en Astyanax fasciatus y Australoheros facetum
title_sort cambios en la velocidad de nado como indicador del efecto tóxico del cadmio en astyanax fasciatus y australoheros facetum
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/68195
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