Natural enemies of water hyacinth in the Argentine northeast and the possibilities of its applications to theirs biological control.
In the lentic shallow water bodies related to the Paraná and Paraguay rivers, the water hyacinth (Eichhornia crassipes) forms dense populations that may cover the entire surface of the water, determining strong limnological changes with severe negative impacts on other aquatic communities. Lower tem...
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| Autores principales: | , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
2025
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/eco/article/view/8460 |
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| Sumario: | In the lentic shallow water bodies related to the Paraná and Paraguay rivers, the water hyacinth (Eichhornia crassipes) forms dense populations that may cover the entire surface of the water, determining strong limnological changes with severe negative impacts on other aquatic communities. Lower temperatures and hydrological factors—particularly river floods—regulate the areal cover and density of such populations. However, as the progressive damming of the rivers reduces the impact of floods, the large populations of water hyacinth may represent a real risk to biological productivity, water quality, navigation, recreational activities, and several other practical purposes.
This paper deals with the evolution of the plants and the associated fauna in natural populations of water hyacinth in some ponds and oxbows related to the Paraná River in Chaco Province (Argentina), over the course of an annual cycle, with the aim of contributing to the development of biological control methods. Vegetal and animal fluctuations are discussed in order to determine the quantitative damage to the plant, along with some observations on the biology of potential control agents. |
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