Abstract
espanolEl isopodo exotico Synidotea laticauda B. 1987, ha sido localizado por primera vez en el estuario del rio Guadiana. En un estudio realizado entre el ano 2009 y 2010 fue encontrado en el tramo medio (12-20 km desde la desembocadura) y zona baja del alto estuario (20-70 km desde la desembocadura), presentando unos rangos optimos de temperatura y conductividad entre 11 oC y 21 oC y entre 20 000 y 25 000 µS/cm. La modificacion del regimen de caudales, debido a la construccion del embalse de Alqueva y el intenso trafico de embarcaciones a lo largo del estuario, pueden haber contribuido a la introduccion y establecimiento de esta especie. EnglishThe exotic isopod species Synidotea laticauda B. 1897 is first reported in the Guadiana Estuary, where it was detected, during 2009 and 2010, in the middle section (12-20 km from the mouth) and in the lower part of the upper sections (20-70 km from the mouth), where the species presented its optimal temperature and conductivity ranges between 11 oC and 21 oC and between 20 000 and 25 000 µS/cm. The absence of freshwater flood events due to the construction of the Alqueva Reservoir, and the intense ship traffic along the estuary may have been decisive for the introduction and establishment of this alien species.
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