Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)

The zooplankton of the saline lakes of central Argentina includes several native species of crustaceans. Among cladocerans, Daphnia menucoensis Paggi, 1996 and Moina eugeniae Olivier, 1954 are two of the most frequent species in these environments. However, there is no information on their ecophysio...

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Autores principales: Vignatti, Alicia, Paggi, J. C., Echaniz, Santiago Andrés, Cabrera, Gabriela Cecilia
Formato: Articulo
Lenguaje:Español
Publicado: 2012
Materias:
Ciencias Naturales
Daphnia
lagos salinos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/69004
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-69004
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
Daphnia
lagos salinos
spellingShingle Ciencias Naturales
Daphnia
lagos salinos
Vignatti, Alicia
Paggi, J. C.
Echaniz, Santiago Andrés
Cabrera, Gabriela Cecilia
Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
topic_facet Ciencias Naturales
Daphnia
lagos salinos
description The zooplankton of the saline lakes of central Argentina includes several native species of crustaceans. Among cladocerans, Daphnia menucoensis Paggi, 1996 and Moina eugeniae Olivier, 1954 are two of the most frequent species in these environments. However, there is no information on their ecophysiological aspects, such as tolerance to different salinities, which may contribute to a better understanding of their geographic and temporal distribution. The aim of this study was to determine the survival of neonates of both species by means of 48-h acute tests (without food or renewal of the medium) at 16 and 18 different salt concentrations. The concentration of total dissolved solids at which the most abundant populations of these species were detected under natural conditions was considered as the “control” or “optimal concentration”. M. eugeniae was more tolerant to increased salinity than D. menucoensis, since 62% of the neonates of the former survived up to 31 g.l-1, whereas more than 50% of the individuals of the latter survived up to 24 g.l-1. In salinities below the “control” concentration, the tolerance limit was different to that recorded in the field, since both species survived at concentrations below 1 g.l-1, whereas in natural conditions they were recorded only as from 7 g.l-1 (M . eugeniae) and 5 g.l-1 (D. menucoensis).
format Articulo
Articulo
author Vignatti, Alicia
Paggi, J. C.
Echaniz, Santiago Andrés
Cabrera, Gabriela Cecilia
author_facet Vignatti, Alicia
Paggi, J. C.
Echaniz, Santiago Andrés
Cabrera, Gabriela Cecilia
author_sort Vignatti, Alicia
title Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
title_short Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
title_full Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
title_fullStr Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
title_full_unstemmed Tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>Daphnia menucoensis</i> y <i>Moina eugeniae</i> (Artropoda, crustacea)
title_sort tolerancia a la salinidad de dos cladóceros halófilos autóctonos: <i>daphnia menucoensis</i> y <i>moina eugeniae</i> (artropoda, crustacea)
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/69004
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