Feeding impact of the planthopperTaosa longula(Hemiptera: Dictyopharidae) on water hyacinth,Eichhornia crassipes(Pontederiaceae)
| Autor: | M. Cristina Hernández, Joaquín Sacco, Guillermo Cabrera Walsh, M. Victoria Cardo, Alejandro Sosa, Gerardo Elsesser |
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| Rok vydání: | 2013 |
| Předmět: |
Eichhornia crassipes
biology Hyacinth WATER HYACINTH BIOCONTROL Biological pest control Ecología biology.organism_classification PAIRED FEEDING TESTS Ciencias Biológicas Planthopper Agronomy Insect Science Aquatic plant HEMIPTERAN FEEDING DAMAGE Pontederiaceae Weed Nymph Agronomy and Crop Science CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Biocontrol Science and Technology. 23:160-169 |
| ISSN: | 1360-0478 0958-3157 |
| DOI: | 10.1080/09583157.2012.745483 |
| Popis: | Taosa longula Remes Lenicov (Hemiptera: Dictyopharidae), a planthopper native to South America, is a candidate for the biological control of water hyacinth, Eichhornia crassipes (Mart.) Solms-Laubach (Pontederiaceae), a serious weed worldwide. Biological control requires agents that are not only specific but also effective. Damage caused by sap-sucking insects is difficult to assess. In this work we designed an experimental and analytical procedure to evaluate the potential damage of T. longula on water hyacinth. The damage that T. longula causes to the clonal reproduction, biomass production, and growth of water hyacinth was studied through a paired greenhouse trial with floating cages. The performance of the plant, starting from two plants per treatment, was evaluated at different insect densities (5, 10, 15 and 20 nymphs per cage) until all the nymphs moulted to adults. The tests showed that individual growth and biomass production of water hyacinth was reduced due to the effect of the insect feeding above five nymphs per cage. The number of new plants produced by clonal reproduction was only significantly different above 15 nymphs per cage. These results suggest that this planthopper could be an effective agent for the biological control of water hyacinth. Fil: Sacco, Joaquín. Laboratorios Fox; Argentina Fil: Cabrera Walsh, Guillermo José. Fundación para el Estudio de Especies Invasivas; Argentina Fil: Hernández, M. Cristina. Fundación para el Estudio de Especies Invasivas; Argentina Fil: Sosa, Alejandro Joaquín. Fundación para el Estudio de Especies Invasivas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cardo, María Victoria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Elsesser, Gerardo. Universidad Maimónides; Argentina |
| Databáze: | OpenAIRE |
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