Saturday , April 21 2018
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Waterhyacinth

Waterhyacinth (WH), Eichhornia crassipes, is a floating macrophyte, perennial and one of the worst aquatic weed worldwide because its aggressive growing and dispersion ability. WH was brought to the whole world from South America as ornamental and thus has become an invasive species. In 1968 started the investigations in our laboratory to identify and study the insects associated with WHto initiate a biological control program in Florida, USA. 

As result of these research 6 biocontrol agents were developed and are use at present: Orthogalumna terebrantis(Acari: Galumnidae), Neochetina eichorniae (Col., Curculionidae), Neochetina bruchi (Col., Curculionidae),  Niphograpta albiguttalis (Lep., Crambidae), Xubida infusella(Lep., Crambidae) y Megamelus scutellaris(Hemip., Delphacidae).

Other insects are being studied as potential biocontrol agents: Taosa longulaTaosa sp. (Hemiptera) y Thrypticus truncatus (Diptera).

Research on waterhyacinth ecology and associated insects in wetlands of Río de la Plata.

In order to broaden waterhyacinth management strategies, plant ecology and its associated herbivores are studied. Special attention is paid to the leafhopper Taosa longula.


Staff in charge:
Alejandro Sosa
Guillermo Cabrera Walsh 
M. Cristina Hernández
otrito-okMarina Oleiro
Cooperators:
-Phil Tipping, ARS-IPRL, Ft. Lauderdale, Florida, EE.UU.
-Paul Pratt, ARS-EIWRU, Albany, California, EE.UU.
-Martin P. Hill and J. Coetzee, Rhodes Univ., South Africa.
-Angela Bownes and Costas Zachariades, PPRI, South Africa.
-Ana Marino, Univ. y Museo de La Plata,  Buenos Aires, Argentina
-Celeste Franceschini, Solange Martinez, Centro Ecol. Aplicada del Litoral, CECOAL , Corrientes, Arg.
-Raghu Sathyamurthy and Andy Sheppard, CSIRO, Australia
Alejandro and Mariel sampling at San Vicente, Buenos Aires
Cristina surveying for WH insects at Herradura Formosa
Taosa longula host specificity tests