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Biodiversidad: amenaza de enfermedades para los peces europeos
Rodolphe E Gozlan1, Sophie St-Hilaire, Stephen W Feist
1Centre for Ecology & Hydrology, Winfrith Technology Centre, Dorchester, Dorset DT2 8ZD, UK. reg@ceh.ac.uk
Nature
|June 24, 2005
Resumen
Los ciprinidos asiáticos invasores Pseudorasbora parva están causando una alta mortalidad e inhibiendo el desove en los peces europeos nativos Leucaspius delineatus. Un parásito letal y no específico transportado por los peces invasores amenaza la biodiversidad de los peces europeos y la acuicultura.
Área de la Ciencia:
- Ecología Ecología Ecología.
- Especies invasoras Biología Biología.
- Parasitología Parasitología.
Sus antecedentes:
- Las especies introducidas pueden alterar los ecosistemas nativos.
- El ciprinídeo asiático invasor Pseudorasbora parva se está extendiendo en Europa.
- El ciprinido europeo en peligro de extinción Leucaspius delineatus se enfrenta a numerosas amenazas.
Objetivo del estudio:
- Para investigar el impacto de Pseudorasbora parva en Leucaspius delineatus.
- Para identificar el mecanismo detrás de los efectos negativos de Pseudorasbora parva.
- Evaluar las implicaciones ecológicas y económicas más amplias.
Principales métodos:
- Observaciones de campo de las poblaciones de peces.
- Análisis de laboratorio de la salud de los peces y los patógenos.
- Identificación del agente infeccioso.
Principales resultados:
- La introducción de Pseudorasbora parva conduce a un aumento de la mortalidad en Leucaspius delineatus.
- El desove en Leucaspius delineatus está completamente inhibido por las especies invasoras.
- Un parásito eucariótico intracelular letal y no específico, probablemente transportado por Pseudorasbora parva, se identifica como la causa.
Conclusiones:
- El invasor Pseudorasbora parva representa una grave amenaza para el Leucaspius delineatus. en peligro de extinción.
- El parásito identificado podría reducir significativamente la biodiversidad de los peces en toda Europa.
- Las implicaciones para la acuicultura comercial debido al patógeno no específico y mortal son considerables.
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