CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
Status of the alien pathogen Paranosema locustae (Microsporidia) in grasshoppers (Orthoptera: Acridoidea) of the Argentine Pampas
Autor/es:
BARDI, C; MARIOTTINI,Y.; PLISCHUK, S; LANGE, C.E.
Revista:
BIOCONTROL SCIENCE AND TECHNOLOGY
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Abingdon, Oxfordshire; Año: 2012 vol. 22 p. 497 - 512
ISSN:
0958-3157
Resumen:
After experimental introductions from North America in 19781982, the biocontrolagent Paranosema locustae became established in grasshopper communities of thewestern Pampas region of Argentina. The use and establishment of P. locustae inArgentina constitute both a case of neoclassical or new association biologicalcontrol (use of an alien species against native pests) and a case of pathogen15 pollution (anthropogenic introductionestablishment of an infectious disease inpopulations of native species). Since P. locustae is a multihost pathogen amonggrasshoppers, its presence in the western Pampas represents an additional factordisrupting grasshopper communities according to the differential susceptibility ofeach species and possibly threatening some species. Microscopic examination20 of 504 grasshopper samples (the mean number of individuals per sample185)belonging to 43 species from 93 localities throughout the Pampas revealed anestablishment area of approximate 90,000 km2 from about 358 North to 388 Southand from 618 East to 658 West. Field infections by P. locustae have now beendetected in 21 grasshopper species in the western Pampas. Susceptible species25 with geographic distributions mostly restricted to the establishment area and withnumerically small populations, like the melanopline Scotussa daguerrei, arepredicted to be the ones facing higher risks of negative impacts.