Análisis para la detección de Sphaerothecum destruens en una población invasora de Pseudorasbora parva (Temminck & Schlegel, 1846)

espanolSe evalua la presencia y prevalencia del parasito Sphaerotecum destruens en una poblacion del pez invasor Pseudorasbora parva recientemente detectada en la Cuenca Sur de Espana, mediante tecnicas moleculares (PCR doble anidada). Los resultados fueron negativos para Sphaerothecum destruens en la muestra analizada (n = 29 peces), lo que sugiere que, o bien el parasito no esta aun establecido en la poblacion invasora, o presenta una baja prevalencia. Es la primera vez que se analiza la presencia del parasito en la peninsula iberica, y se recomienda la busqueda periodica del parasito a otras poblaciones de P. parva asentadas en la peninsula iberica y en otros peces potencialmente afectados. EnglishThe presence and prevalence of the parasite Sphaerotecum destruens was evaluated in an invasive population of Pseudorasbora parva which was recently detected in the Southern Basin of Spain. For this analysis, molecular techniques (double nested PCR) were used. The results were negative in the sample (n = 29 fish individuals), suggesting that the parasite was not established in the invasive population yet or it had a low prevalence. This is the first time that the presence of the parasite in the Iberian Peninsula is analyzed. We recommend periodic searches of the parasite in other P. parva populations already settled in the Iberian Peninsula as well as in other fish species potentially affected.