Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina

Autores
Fernández, María Virginia; Hamann, Monika Ines; Kehr, Arturo Ignacio
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In Argentina, no ecological studies have been reported on the infection parameters of Kalipharynx sp. metacercariae in planorbid snails. To this end, the aims of this study were: (i) to provide information on the population biology of Kalipharynx sp. metacercariae in the planorbid snails Biomphalaria tenagophila and B. occidentalis through the study of prevalence and intensity of larval infection during a seasonal cycle; (ii) to evaluate the effects of host shell size on prevalence and infection intensity, iii) to evaluate the effect of infection intensity on cyst size. Samples were taken between June 2010 and April 2011 (encompassing all seasons) from a subtropical permanent pond in Corrientes City, Corrientes, Argentina. A total of 362 metacercariae (n=262 and n=100; from B. tenagophila and B. occidentalis respectively) were collected from 616 snails (n=466 and n=150 from B. tenagophila and B. occidentalis respectively). The metacercarial cysts were found in the digestive gland, mantle cavity, intestine and ovotestis. B. tenagophila showed a range of infection from 1 to 60 cysts per snail (mean=4.5±SD=9.9), and cyst diameter ranging between 255 and 705μm (466.4±119); while, B. occidentalis showed a range of infection from 1 to 23 (5.5±5.6), and cyst diameter ranging between 310 to 900μm (554.5±150). Results obtained indicated that, although absent in autumn, metacercariae of Kalipharynx sp. were present most of the year in both species of Biomphalaria, showing high values in both warm-season. Furthermore, both the infection intensity and host shell size varied significantly between seasons, although no seasonal variation was observed with respect to metacercarial cyst size, suggesting the possibility of more than one peak of cercariae emergence during the year. The prevalence of infection was significantly and positively correlated with snail size in both host species (p<0.05). The smallest host size class harbouring a metacercarial infection was 7.1-8.0mm and 11.1-12.0mm in B. tenagophila and B. occidentalis, respectively. The mean intensity of infection was positively correlated with snail size, but this relation was significant only in B. tenagophila (p<0.05). However, non-significant negative correlations were observed for intensity of infection vs cyst size in both host species (p>0.05). The results of this study show a significant influence of host size on prevalence and infection intensity, and a tendency towards density-dependent reductions in the growth of cysts. This is the first study in Argentina analyzing the population biology of Kalipharynx sp. metacercariae.
Fil: Fernández, María Virginia. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
Fil: Hamann, Monika Ines. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
Fil: Kehr, Arturo Ignacio. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
Materia
LARVAL TREMATODES
KALIPHARYNX
BIOMPHALARIA
POPULATION
ARGENTINA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/890

id CONICETDig_85af370e4449eebbbd3317502a333908
oai_identifier_str oai:ri.conicet.gov.ar:11336/890
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern ArgentinaFernández, María VirginiaHamann, Monika InesKehr, Arturo IgnacioLARVAL TREMATODESKALIPHARYNXBIOMPHALARIAPOPULATIONARGENTINAhttps://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6In Argentina, no ecological studies have been reported on the infection parameters of Kalipharynx sp. metacercariae in planorbid snails. To this end, the aims of this study were: (i) to provide information on the population biology of Kalipharynx sp. metacercariae in the planorbid snails Biomphalaria tenagophila and B. occidentalis through the study of prevalence and intensity of larval infection during a seasonal cycle; (ii) to evaluate the effects of host shell size on prevalence and infection intensity, iii) to evaluate the effect of infection intensity on cyst size. Samples were taken between June 2010 and April 2011 (encompassing all seasons) from a subtropical permanent pond in Corrientes City, Corrientes, Argentina. A total of 362 metacercariae (n=262 and n=100; from B. tenagophila and B. occidentalis respectively) were collected from 616 snails (n=466 and n=150 from B. tenagophila and B. occidentalis respectively). The metacercarial cysts were found in the digestive gland, mantle cavity, intestine and ovotestis. B. tenagophila showed a range of infection from 1 to 60 cysts per snail (mean=4.5±SD=9.9), and cyst diameter ranging between 255 and 705μm (466.4±119); while, B. occidentalis showed a range of infection from 1 to 23 (5.5±5.6), and cyst diameter ranging between 310 to 900μm (554.5±150). Results obtained indicated that, although absent in autumn, metacercariae of Kalipharynx sp. were present most of the year in both species of Biomphalaria, showing high values in both warm-season. Furthermore, both the infection intensity and host shell size varied significantly between seasons, although no seasonal variation was observed with respect to metacercarial cyst size, suggesting the possibility of more than one peak of cercariae emergence during the year. The prevalence of infection was significantly and positively correlated with snail size in both host species (p<0.05). The smallest host size class harbouring a metacercarial infection was 7.1-8.0mm and 11.1-12.0mm in B. tenagophila and B. occidentalis, respectively. The mean intensity of infection was positively correlated with snail size, but this relation was significant only in B. tenagophila (p<0.05). However, non-significant negative correlations were observed for intensity of infection vs cyst size in both host species (p>0.05). The results of this study show a significant influence of host size on prevalence and infection intensity, and a tendency towards density-dependent reductions in the growth of cysts. This is the first study in Argentina analyzing the population biology of Kalipharynx sp. metacercariae.Fil: Fernández, María Virginia. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;Fil: Hamann, Monika Ines. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;Fil: Kehr, Arturo Ignacio. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;Revista de Biologia Tropical2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/890Fernández, María Virginia; Hamann, Monika Ines; Kehr, Arturo Ignacio; Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina; Revista de Biologia Tropical; Revista de Biología Tropical; 61; 4; 12-2013; 1647-16560034-7744enginfo:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/24432525info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:54Zoai:ri.conicet.gov.ar:11336/890instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:43:55.031CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
title Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
spellingShingle Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
Fernández, María Virginia
LARVAL TREMATODES
KALIPHARYNX
BIOMPHALARIA
POPULATION
ARGENTINA
title_short Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
title_full Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
title_fullStr Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
title_full_unstemmed Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
title_sort Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina
dc.creator.none.fl_str_mv Fernández, María Virginia
Hamann, Monika Ines
Kehr, Arturo Ignacio
author Fernández, María Virginia
author_facet Fernández, María Virginia
Hamann, Monika Ines
Kehr, Arturo Ignacio
author_role author
author2 Hamann, Monika Ines
Kehr, Arturo Ignacio
author2_role author
author
dc.subject.none.fl_str_mv LARVAL TREMATODES
KALIPHARYNX
BIOMPHALARIA
POPULATION
ARGENTINA
topic LARVAL TREMATODES
KALIPHARYNX
BIOMPHALARIA
POPULATION
ARGENTINA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
dc.description.none.fl_txt_mv In Argentina, no ecological studies have been reported on the infection parameters of Kalipharynx sp. metacercariae in planorbid snails. To this end, the aims of this study were: (i) to provide information on the population biology of Kalipharynx sp. metacercariae in the planorbid snails Biomphalaria tenagophila and B. occidentalis through the study of prevalence and intensity of larval infection during a seasonal cycle; (ii) to evaluate the effects of host shell size on prevalence and infection intensity, iii) to evaluate the effect of infection intensity on cyst size. Samples were taken between June 2010 and April 2011 (encompassing all seasons) from a subtropical permanent pond in Corrientes City, Corrientes, Argentina. A total of 362 metacercariae (n=262 and n=100; from B. tenagophila and B. occidentalis respectively) were collected from 616 snails (n=466 and n=150 from B. tenagophila and B. occidentalis respectively). The metacercarial cysts were found in the digestive gland, mantle cavity, intestine and ovotestis. B. tenagophila showed a range of infection from 1 to 60 cysts per snail (mean=4.5±SD=9.9), and cyst diameter ranging between 255 and 705μm (466.4±119); while, B. occidentalis showed a range of infection from 1 to 23 (5.5±5.6), and cyst diameter ranging between 310 to 900μm (554.5±150). Results obtained indicated that, although absent in autumn, metacercariae of Kalipharynx sp. were present most of the year in both species of Biomphalaria, showing high values in both warm-season. Furthermore, both the infection intensity and host shell size varied significantly between seasons, although no seasonal variation was observed with respect to metacercarial cyst size, suggesting the possibility of more than one peak of cercariae emergence during the year. The prevalence of infection was significantly and positively correlated with snail size in both host species (p<0.05). The smallest host size class harbouring a metacercarial infection was 7.1-8.0mm and 11.1-12.0mm in B. tenagophila and B. occidentalis, respectively. The mean intensity of infection was positively correlated with snail size, but this relation was significant only in B. tenagophila (p<0.05). However, non-significant negative correlations were observed for intensity of infection vs cyst size in both host species (p>0.05). The results of this study show a significant influence of host size on prevalence and infection intensity, and a tendency towards density-dependent reductions in the growth of cysts. This is the first study in Argentina analyzing the population biology of Kalipharynx sp. metacercariae.
Fil: Fernández, María Virginia. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
Fil: Hamann, Monika Ines. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
Fil: Kehr, Arturo Ignacio. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Nordeste. Centro de Ecologia Aplicada del Litoral (i); Argentina;
description In Argentina, no ecological studies have been reported on the infection parameters of Kalipharynx sp. metacercariae in planorbid snails. To this end, the aims of this study were: (i) to provide information on the population biology of Kalipharynx sp. metacercariae in the planorbid snails Biomphalaria tenagophila and B. occidentalis through the study of prevalence and intensity of larval infection during a seasonal cycle; (ii) to evaluate the effects of host shell size on prevalence and infection intensity, iii) to evaluate the effect of infection intensity on cyst size. Samples were taken between June 2010 and April 2011 (encompassing all seasons) from a subtropical permanent pond in Corrientes City, Corrientes, Argentina. A total of 362 metacercariae (n=262 and n=100; from B. tenagophila and B. occidentalis respectively) were collected from 616 snails (n=466 and n=150 from B. tenagophila and B. occidentalis respectively). The metacercarial cysts were found in the digestive gland, mantle cavity, intestine and ovotestis. B. tenagophila showed a range of infection from 1 to 60 cysts per snail (mean=4.5±SD=9.9), and cyst diameter ranging between 255 and 705μm (466.4±119); while, B. occidentalis showed a range of infection from 1 to 23 (5.5±5.6), and cyst diameter ranging between 310 to 900μm (554.5±150). Results obtained indicated that, although absent in autumn, metacercariae of Kalipharynx sp. were present most of the year in both species of Biomphalaria, showing high values in both warm-season. Furthermore, both the infection intensity and host shell size varied significantly between seasons, although no seasonal variation was observed with respect to metacercarial cyst size, suggesting the possibility of more than one peak of cercariae emergence during the year. The prevalence of infection was significantly and positively correlated with snail size in both host species (p<0.05). The smallest host size class harbouring a metacercarial infection was 7.1-8.0mm and 11.1-12.0mm in B. tenagophila and B. occidentalis, respectively. The mean intensity of infection was positively correlated with snail size, but this relation was significant only in B. tenagophila (p<0.05). However, non-significant negative correlations were observed for intensity of infection vs cyst size in both host species (p>0.05). The results of this study show a significant influence of host size on prevalence and infection intensity, and a tendency towards density-dependent reductions in the growth of cysts. This is the first study in Argentina analyzing the population biology of Kalipharynx sp. metacercariae.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/890
Fernández, María Virginia; Hamann, Monika Ines; Kehr, Arturo Ignacio; Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina; Revista de Biologia Tropical; Revista de Biología Tropical; 61; 4; 12-2013; 1647-1656
0034-7744
url http://hdl.handle.net/11336/890
identifier_str_mv Fernández, María Virginia; Hamann, Monika Ines; Kehr, Arturo Ignacio; Biology of Kalipharynx sp. (Trematoda: Digenea) metacercariae in Biomphalaria (Gasteropoda: Planorbidae) from Northeastern Argentina; Revista de Biologia Tropical; Revista de Biología Tropical; 61; 4; 12-2013; 1647-1656
0034-7744
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/24432525
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Revista de Biologia Tropical
publisher.none.fl_str_mv Revista de Biologia Tropical
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842268632155947008
score 13.13397