Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.

Considering IPPC climate change scenarios, it is pertinent to predict situations where coastal ecosystems already impacted with chemical contamination became exposed to an additional stressor under a future scenario of seawater intrusion. Accordingly, the present study aimed at evaluating if a negat...

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Autores principales:	João Leitão, Rui Ribeiro, Amadeu M V M Soares, Isabel Lopes
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9a9e2d1876e34dd885785e11b268a508
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spelling	oai:doaj.org-article:9a9e2d1876e34dd885785e11b268a5082021-11-18T08:58:18ZTolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.1932-620310.1371/journal.pone.0068702https://doaj.org/article/9a9e2d1876e34dd885785e11b268a5082013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23990877/?tool=EBIhttps://doaj.org/toc/1932-6203Considering IPPC climate change scenarios, it is pertinent to predict situations where coastal ecosystems already impacted with chemical contamination became exposed to an additional stressor under a future scenario of seawater intrusion. Accordingly, the present study aimed at evaluating if a negative association between tolerance to a metal and to saltwater exists among genotypes of a freshwater organism. For this, five clonal lineages of the cladoceran Daphnia longispina O.F. Müller, exhibiting a differential tolerance to lethal levels of copper, were selected. Each clonal lineage was exposed to lethal and sublethal concentrations of sodium chloride (assumed as a protective surrogate to evaluate the toxicity of increased salinity to freshwater organisms). Mortality, time to release the first brood and total number of neonates per female were monitored and the somatic growth rate and intrinsic rate of natural increase were computed for each clonal lineage. Data here obtained were compared with their lethal responses to copper and significant negative correlations were found. These results suggest that genetically eroded populations of D. longispina, due to copper or salinity, may be particularly susceptible to a later exposure to the other contaminant supporting the multiple stressors differential tolerance.João LeitãoRui RibeiroAmadeu M V M SoaresIsabel LopesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e68702 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q João Leitão Rui Ribeiro Amadeu M V M Soares Isabel Lopes Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
description	Considering IPPC climate change scenarios, it is pertinent to predict situations where coastal ecosystems already impacted with chemical contamination became exposed to an additional stressor under a future scenario of seawater intrusion. Accordingly, the present study aimed at evaluating if a negative association between tolerance to a metal and to saltwater exists among genotypes of a freshwater organism. For this, five clonal lineages of the cladoceran Daphnia longispina O.F. Müller, exhibiting a differential tolerance to lethal levels of copper, were selected. Each clonal lineage was exposed to lethal and sublethal concentrations of sodium chloride (assumed as a protective surrogate to evaluate the toxicity of increased salinity to freshwater organisms). Mortality, time to release the first brood and total number of neonates per female were monitored and the somatic growth rate and intrinsic rate of natural increase were computed for each clonal lineage. Data here obtained were compared with their lethal responses to copper and significant negative correlations were found. These results suggest that genetically eroded populations of D. longispina, due to copper or salinity, may be particularly susceptible to a later exposure to the other contaminant supporting the multiple stressors differential tolerance.
format	article
author	João Leitão Rui Ribeiro Amadeu M V M Soares Isabel Lopes
author_facet	João Leitão Rui Ribeiro Amadeu M V M Soares Isabel Lopes
author_sort	João Leitão
title	Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
title_short	Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
title_full	Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
title_fullStr	Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
title_full_unstemmed	Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.
title_sort	tolerance to copper and to salinity in daphnia longispina: implications within a climate change scenario.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/9a9e2d1876e34dd885785e11b268a508
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Tolerance to copper and to salinity in Daphnia longispina: implications within a climate change scenario.

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