Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina

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Some of the Biomphalaria species living in Chaco, such as B. straminea and B. tenagophila, are natural transmitters of schistosomiasis in Brazil, while those of the genus Drepanotrema are not intermediate hosts of the disease. The aim of the present work was to analyze the importance of a selected s...

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Autores principales: Rumi, A., Bechara, J.A., Hamann, M.I., Ostrowski De Núñez, M.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2002
Materias:
Chaco Region
Gastropoda
Intermediate-hosts
Paraná River
Planorbidae
Schistosomiasis
Vector-ecology
Ancylidae
Biomphalaria
Biomphalaria straminea
Biomphalaria tenagophila
Canna glauca
Cimex
Drepanotrema
Drepanotrema cimex
Drepanotrema lucidum
Eichhornia
Eichhornia crassipes
Hydrobiidae
Hydrocotyle
Hydrocotyle ranunculoides
Panicum
Panicum elephantipes
Pistia stratiotes
Stratiotes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00762997_v44_n2_p273_Rumi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_00762997_v44_n2_p273_Rumi2023-06-12T16:45:54Z Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina Malacologia 2002;44(2):273-288 Rumi, A. Bechara, J.A. Hamann, M.I. Ostrowski De Núñez, M. Chaco Region Gastropoda Intermediate-hosts Paraná River Planorbidae Schistosomiasis Vector-ecology Ancylidae Biomphalaria Biomphalaria straminea Biomphalaria tenagophila Canna glauca Cimex Drepanotrema Drepanotrema cimex Drepanotrema lucidum Eichhornia Eichhornia crassipes Gastropoda Hydrobiidae Hydrocotyle Hydrocotyle ranunculoides Panicum Panicum elephantipes Pistia stratiotes Planorbidae Stratiotes Some of the Biomphalaria species living in Chaco, such as B. straminea and B. tenagophila, are natural transmitters of schistosomiasis in Brazil, while those of the genus Drepanotrema are not intermediate hosts of the disease. The aim of the present work was to analyze the importance of a selected set of environmental variables in explaining patterns of distributions and relative abundance of planorbid gastropod assemblages. The study sites were located in urban areas of Resistencia City, Chaco Province, and the environmental variables measured were 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 variables were obtained. In canonical correspondence analysis (CCA), seven environmental variables were retained after a stepwise forward 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 O 2% and P. elephantipes abundance, as well as decreasing [N-NH 4+] and P. stratiotes. Axis II separates D. lucidum, D. anatinum and D. cimex from the other planorbid species along a gradient associated with decreasing abundances 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. Fil:Ostrowski De Núñez, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00762997_v44_n2_p273_Rumi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Chaco Region
Gastropoda
Intermediate-hosts
Paraná River
Planorbidae
Schistosomiasis
Vector-ecology
Ancylidae
Biomphalaria
Biomphalaria straminea
Biomphalaria tenagophila
Canna glauca
Cimex
Drepanotrema
Drepanotrema cimex
Drepanotrema lucidum
Eichhornia
Eichhornia crassipes
Gastropoda
Hydrobiidae
Hydrocotyle
Hydrocotyle ranunculoides
Panicum
Panicum elephantipes
Pistia stratiotes
Planorbidae
Stratiotes
spellingShingle Chaco Region
Gastropoda
Intermediate-hosts
Paraná River
Planorbidae
Schistosomiasis
Vector-ecology
Ancylidae
Biomphalaria
Biomphalaria straminea
Biomphalaria tenagophila
Canna glauca
Cimex
Drepanotrema
Drepanotrema cimex
Drepanotrema lucidum
Eichhornia
Eichhornia crassipes
Gastropoda
Hydrobiidae
Hydrocotyle
Hydrocotyle ranunculoides
Panicum
Panicum elephantipes
Pistia stratiotes
Planorbidae
Stratiotes
Rumi, A.
Bechara, J.A.
Hamann, M.I.
Ostrowski De Núñez, M.
Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
topic_facet Chaco Region
Gastropoda
Intermediate-hosts
Paraná River
Planorbidae
Schistosomiasis
Vector-ecology
Ancylidae
Biomphalaria
Biomphalaria straminea
Biomphalaria tenagophila
Canna glauca
Cimex
Drepanotrema
Drepanotrema cimex
Drepanotrema lucidum
Eichhornia
Eichhornia crassipes
Gastropoda
Hydrobiidae
Hydrocotyle
Hydrocotyle ranunculoides
Panicum
Panicum elephantipes
Pistia stratiotes
Planorbidae
Stratiotes
description Some of the Biomphalaria species living in Chaco, such as B. straminea and B. tenagophila, are natural transmitters of schistosomiasis in Brazil, while those of the genus Drepanotrema are not intermediate hosts of the disease. The aim of the present work was to analyze the importance of a selected set of environmental variables in explaining patterns of distributions and relative abundance of planorbid gastropod assemblages. The study sites were located in urban areas of Resistencia City, Chaco Province, and the environmental variables measured were 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 variables were obtained. In canonical correspondence analysis (CCA), seven environmental variables were retained after a stepwise forward 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 O 2% and P. elephantipes abundance, as well as decreasing [N-NH 4+] and P. stratiotes. Axis II separates D. lucidum, D. anatinum and D. cimex from the other planorbid species along a gradient associated with decreasing abundances 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.
format Artículo
Artículo
publishedVersion
author Rumi, A.
Bechara, J.A.
Hamann, M.I.
Ostrowski De Núñez, M.
author_facet Rumi, A.
Bechara, J.A.
Hamann, M.I.
Ostrowski De Núñez, M.
author_sort Rumi, A.
title Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
title_short Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
title_full Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
title_fullStr Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
title_full_unstemmed Ecology of potential hosts of schistosomiasis in urban environments of Chaco, Argentina
title_sort ecology of potential hosts of schistosomiasis in urban environments of chaco, argentina
publishDate 2002
url http://hdl.handle.net/20.500.12110/paper_00762997_v44_n2_p273_Rumi
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AT hamannmi ecologyofpotentialhostsofschistosomiasisinurbanenvironmentsofchacoargentina
AT ostrowskidenunezm ecologyofpotentialhostsofschistosomiasisinurbanenvironmentsofchacoargentina
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