Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)

The lipid composition of muscle and liver of detritivorous fish <i>Prochilodus lineatus</i>, settling particles and sediments from reference and polluted areas of the Parana-Rio de la Plata basin were analyzed to evaluate the impact of feeding on contaminated detritus. Overall, muscular...

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Autores principales: Speranza, Eric Demian, Tatone, Leandro Martín, Cappelletti, Natalia Elsa, Colombo, Juan Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Naturales
Lipid composition
Detritus
Pollution
Rio de la Plata
Prochilodus
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130961
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130961
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Lipid composition
Detritus
Pollution
Rio de la Plata
Prochilodus
spellingShingle Ciencias Naturales
Lipid composition
Detritus
Pollution
Rio de la Plata
Prochilodus
Speranza, Eric Demian
Tatone, Leandro Martín
Cappelletti, Natalia Elsa
Colombo, Juan Carlos
Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
topic_facet Ciencias Naturales
Lipid composition
Detritus
Pollution
Rio de la Plata
Prochilodus
description The lipid composition of muscle and liver of detritivorous fish <i>Prochilodus lineatus</i>, settling particles and sediments from reference and polluted areas of the Parana-Rio de la Plata basin were analyzed to evaluate the impact of feeding on contaminated detritus. Overall, muscular lipids were highly variable (14 ± 13 % wet mass, ww) and increased with body mass trough a rapid triglyceride accumulation [82 ± 7.9 % neutral lipids (NL) for fish weighing less than 1 kg to 99 ± 0.51 % NL for fish weighing more than 4 kg] with a parallel decrease of free fatty acid (13 ± 6.0 to 0.11 ± 0.23 % NL). Liver lipids were more uniform (6.0 ± 2.1 % ww) and were dominated by triglycerides (40 ± 21 % NL) and free fatty acids (34 ± 19 % NL). Compared with fish from reference areas in the North, polluted fish from Buenos Aires presented higher muscular lipid contents (24 ± 13 vs. 3.9 ± 3.1 % ww) and triglyceride abundance (98 ± 3.5 vs. 84 ± 9.7 % NL), and enlarged livers (Hepatosomatic index 1.4 ± 0.4 vs. 0.7 ± 0.2) enriched with esterified cholesterol (20 ± 9.1 vs. 11 ± 9.9 % NL). These differences were consistent with the higher proportions of lipids, enriched with free fatty acids and triglycerides, in stomach contents, settling particles and sediments from Buenos Aires relative to the North of the basin. The change in <i>Prochilodus lineatus</i> diet from organic-poor vegetal detritus in the north to polluted but abundant and fresh anthropogenic matter at Buenos Aires resulted in multiple alterations of lipid metabolism.
format Articulo
Articulo
author Speranza, Eric Demian
Tatone, Leandro Martín
Cappelletti, Natalia Elsa
Colombo, Juan Carlos
author_facet Speranza, Eric Demian
Tatone, Leandro Martín
Cappelletti, Natalia Elsa
Colombo, Juan Carlos
author_sort Speranza, Eric Demian
title Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
title_short Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
title_full Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
title_fullStr Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
title_full_unstemmed Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>Prochilodus lineatus</i>)
title_sort cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (<i>prochilodus lineatus</i>)
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/130961
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