INVESTIGADORES
HAMANN monika Ines
artículos
Título:
Ecology of potential hosts of schistosomiasis in urban environments of Chaco. Argentina.
Autor/es:
RUMI A.; BECHARA J. A.; HAMANN M. I.; OSTROWSKI DE NÚÑEZ,M.
Revista:
MALACOLOGIA
Editorial:
Institute of Malacology
Referencias:
Lugar: Estados Unidos; Año: 2002 vol. 44 p. 273 - 288
ISSN:
0076-2997
Resumen:
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The study sites were located in urban areas of Resistencia city, Chaco Province, and the environmental variables measured we substratum (macrophytes), water quality (pH, O2, nutrients, among others), as well as other gastropods (Ancylidae, Hydrobiidae and Ampullaridae). Seasonal samplings were carried out in four distinct environments. Thirty-one quantitative samples of gastropods and environmental variable were obtained. In canonical correspondence analysis (CCA), seven environmental were retained after a stepwise forwards selection, from a total of 26, including (N-NH4+), O2 %, and the macrophytes Eichhornia crassipes, Pistia stratiotes, Panicum elephantipes, Hydrocotyle ranunculoides and Canna glauca. They explained 62% of the variation in planorbid association. Canna glauca was the most significant variable, being positively correlated with all of the species of Drepanotrema. Axis I separates B. tenagophila from B. straminea, along a gradient related to increasing O2% and P. elephantipes abundance, as well as decreasing (N-NH4+) and P. stratiotes.  Axis II separated D. lucidum, D. anatinum and D. cimex from the other planorbid species along a gradient associated with decreasing abundance of H. ranunculoides and C. glauca. Some common aquatic macrophytes, and to a lesser extent, dissolved oxygen and ammonium in water, may be useful indicators of favorable environmental conditions for potential intermediate hosts of schistosomiasis in Chaco Region.