Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru
Fasciolosis is a zoonotic disease caused by Fasciola hepatica, which is widely distributed in Peru and considered highly endemic in the Arequipa region. Despite this, records of lymnaeid snails in the area remain limited. This study aimed to identify lymnaeid vectors of F. hepatica and to determine...
| Autores principales: | , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional del Nordeste
2025
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| Materias: | |
| Acceso en línea: | https://revistas.unne.edu.ar/index.php/vet/article/view/8325 |
| Aporte de: |
| id |
I48-R154-article-8325 |
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| record_format |
ojs |
| institution |
Universidad Nacional del Nordeste |
| institution_str |
I-48 |
| repository_str |
R-154 |
| container_title_str |
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| topic |
Geographic location Lymnaeidae vector infection larvae Localización geográfica Lymnaeidae vector infección larvas |
| spellingShingle |
Geographic location Lymnaeidae vector infection larvae Localización geográfica Lymnaeidae vector infección larvas Ayaqui, R. Ticona, J. Condo, R. Ruelas-Llerena, N. Pointier, J. P. Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| topic_facet |
Geographic location Lymnaeidae vector infection larvae Localización geográfica Lymnaeidae vector infección larvas |
| author |
Ayaqui, R. Ticona, J. Condo, R. Ruelas-Llerena, N. Pointier, J. P. |
| author_facet |
Ayaqui, R. Ticona, J. Condo, R. Ruelas-Llerena, N. Pointier, J. P. |
| author_sort |
Ayaqui, R. |
| title |
Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| title_short |
Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| title_full |
Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| title_fullStr |
Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| title_full_unstemmed |
Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru |
| title_sort |
distribution of lymneids and cercaric index of fasciola hepatica in the arequipa region, peru |
| description |
Fasciolosis is a zoonotic disease caused by Fasciola hepatica, which is widely distributed in Peru and considered highly endemic in the Arequipa region. Despite this, records of lymnaeid snails in the area remain limited. This study aimed to identify lymnaeid vectors of F. hepatica and to determine their distribution across natural regions, along with their corresponding cercarial index (CI). Lymnaeid snails were manually collected from irrigation canals, wetlands, and other humid environments, identified by their small size and dextral coiling shell. A subset of 10–25 snails was immersed in water at 70°C for 30–40 seconds to facilitate soft tissue extraction. The soft bodies were then removed from the shells and preserved in 70% ethanol. Taxonomic identification was conducted at the Centre de Recherches insulaires et observatoire de L’environnement (CRIOBE), Université de Perpignan, France, based on morphological characteristics of the shell and soft body parts. Sampling locations were categorized according to natural regions: coast (≤2000 m.a.s.l.) and highlands (>2000 m.a.s.l.). Live lymnaeids were examined by compression under a compound microscope (40X and 100X magnification). The criterion for positivity was the presence of rediae and cercariae of F. hepatica. New distribution areas of lymnaeid snails were identified. On the coast, the species detected included Galba cubensis (primary vector) in the provinces of Caravelí, Camaná, Islay, and Arequipa; Pseudosuccinea columella (potential vector) in Caravelí; and G. schirazensis in Santa Rita de Siguas. In the highlands, G. truncatula was identified as the primary vector in the provinces of Caylloma, La Unión, Castilla, Condesuyos, and Arequipa. Cercarial indices were generally low, averaging 0.63% for the Arequipa region. In localities with positive vectors, the distribution was as follows: on the coast, G. cubensis in Vítor showed a CI of 2.13%; in the highlands, G. truncatula exhibited CI values of 1.20% in Huanca, 1.61% in Achoma, 2.63% in Maca, and 2.78% in Taurisma. |
| publisher |
Universidad Nacional del Nordeste |
| publishDate |
2025 |
| url |
https://revistas.unne.edu.ar/index.php/vet/article/view/8325 |
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AT ayaquir distributionoflymneidsandcercaricindexoffasciolahepaticainthearequiparegionperu AT ticonaj distributionoflymneidsandcercaricindexoffasciolahepaticainthearequiparegionperu AT condor distributionoflymneidsandcercaricindexoffasciolahepaticainthearequiparegionperu AT ruelasllerenan distributionoflymneidsandcercaricindexoffasciolahepaticainthearequiparegionperu AT pointierjp distributionoflymneidsandcercaricindexoffasciolahepaticainthearequiparegionperu AT ayaquir distribucionactualizadadelimneidosvectoresdefasciolahepaticaeindicecercaricoenlaregionarequipaperu AT ticonaj distribucionactualizadadelimneidosvectoresdefasciolahepaticaeindicecercaricoenlaregionarequipaperu AT condor distribucionactualizadadelimneidosvectoresdefasciolahepaticaeindicecercaricoenlaregionarequipaperu AT ruelasllerenan distribucionactualizadadelimneidosvectoresdefasciolahepaticaeindicecercaricoenlaregionarequipaperu AT pointierjp distribucionactualizadadelimneidosvectoresdefasciolahepaticaeindicecercaricoenlaregionarequipaperu |
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2025-06-17T05:00:51Z |
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2025-06-17T05:00:51Z |
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I48-R154-article-83252025-06-06T22:16:42Z Distribution of lymneids and cercaric index of Fasciola hepatica in the Arequipa Region, Peru Distribución actualizada de limneidos vectores de Fasciola hepatica e índice cercárico en la región Arequipa, Perú Ayaqui, R. Ticona, J. Condo, R. Ruelas-Llerena, N. Pointier, J. P. Geographic location Lymnaeidae vector infection larvae Localización geográfica Lymnaeidae vector infección larvas Fasciolosis is a zoonotic disease caused by Fasciola hepatica, which is widely distributed in Peru and considered highly endemic in the Arequipa region. Despite this, records of lymnaeid snails in the area remain limited. This study aimed to identify lymnaeid vectors of F. hepatica and to determine their distribution across natural regions, along with their corresponding cercarial index (CI). Lymnaeid snails were manually collected from irrigation canals, wetlands, and other humid environments, identified by their small size and dextral coiling shell. A subset of 10–25 snails was immersed in water at 70°C for 30–40 seconds to facilitate soft tissue extraction. The soft bodies were then removed from the shells and preserved in 70% ethanol. Taxonomic identification was conducted at the Centre de Recherches insulaires et observatoire de L’environnement (CRIOBE), Université de Perpignan, France, based on morphological characteristics of the shell and soft body parts. Sampling locations were categorized according to natural regions: coast (≤2000 m.a.s.l.) and highlands (>2000 m.a.s.l.). Live lymnaeids were examined by compression under a compound microscope (40X and 100X magnification). The criterion for positivity was the presence of rediae and cercariae of F. hepatica. New distribution areas of lymnaeid snails were identified. On the coast, the species detected included Galba cubensis (primary vector) in the provinces of Caravelí, Camaná, Islay, and Arequipa; Pseudosuccinea columella (potential vector) in Caravelí; and G. schirazensis in Santa Rita de Siguas. In the highlands, G. truncatula was identified as the primary vector in the provinces of Caylloma, La Unión, Castilla, Condesuyos, and Arequipa. Cercarial indices were generally low, averaging 0.63% for the Arequipa region. In localities with positive vectors, the distribution was as follows: on the coast, G. cubensis in Vítor showed a CI of 2.13%; in the highlands, G. truncatula exhibited CI values of 1.20% in Huanca, 1.61% in Achoma, 2.63% in Maca, and 2.78% in Taurisma. La fasciolosis es una zoonosis causada por Fasciola hepatica, de amplia distribución en el Perú y particularmente endémica en Arequipa. En esta región, los reportes de limneidos son escasos. Se realizó el estudio en la región Arequipa, con el objetivo de identificar los limneidos vectores de F. hepatica, su distribución de acuerdo con la región natural y el índice cercárico (IC). Se colectaron limneidos, de forma manual en acequias, bofedales o lugares húmedos, reconocidos por su tamaño pequeño y su conchilla dextrógira. Una parte (10-25 caracoles) fue introducida en agua a 70 °C por 30-40 segundos. Posteriormente, se extrajo el cuerpo blando de la conchilla y esta fue fijada en etanol 70%. La identificación taxonómica basada en caracteres morfológicos de las partes blandas y conchilla fue realizada en el Centre de Recherches insulaires et observatoire de L´environnement (CRIOBE), Université de Perpignan, Francia. Las localidades se clasificaron según región natural: costa (hasta 2.000 m s. n. m.) y sierra (sobre 2.000 m s. n. m.). Los limneidos vivos fueron examinados por aplastamiento en microscopio compuesto. El criterio de positividad fue la observación de redias y cercarias compatibles con F. hepatica. Se detectaron nuevas áreas de distribución de limneidos. Las especies identificadas en la costa fueron Galba cubensis vector primario en las provincias de Caravelí, Camaná, Islay y Arequipa; Pseudosuccinea columella vector potencial en Caravelí y G. schirazensis en Santa Rita de Siguas. En la sierra se identificó a G. truncatula como vector primario en las provincias de Caylloma, La Unión, Castilla, Condesuyos y Arequipa. Los índices cercáricos en general fueron bajos con 0,63% para la región Arequipa y por localidades con vectores positivos distribuidos en la costa (G. cubensis) 2,13% en Vítor; y en la sierra (G. truncatula) en Huanca 1,20%, Achoma 1,61%, Maca 2,63% y Taurisma 2,78%. Universidad Nacional del Nordeste 2025-06-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/8325 10.30972/vet.3628325 Revista Veterinaria; Vol. 36 Núm. 2 (2025); 1-9 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/8325/7894 https://creativecommons.org/licenses/by-nc/4.0 |