Accès ouvert

A first report of Pseudosuccinea columella (Say, 1817), an alien intermediate host for liver fluke, in Malawi

Article scientifique 2024 Anglais

Résumé

Starting in October 2021, quarterly malacological surveys have been undertaken in Malawi, with the sampling of 12 specified freshwater habitats throughout a calendar year. Each survey monitors the presence of aquatic intermediate snail hosts of medical and veterinary importance. In March 2023, the alien lymnaeid species Pseudosuccinea columella was encountered for the first time in the surveys, in Nsanje District. This species identity was later confirmed upon DNA analysis of mitochondrial ribosomal 16S sequences. In July 2023, P. columella was also noted at single sites within Mangochi and Chikwawa Districts, and again in Nsanje District, with an additional location observed. Of particular importance, our sampled location in Mangochi District was directly connected to Lake Malawi, which expands the species list of invasive molluscs in this lake. While P. columella is a well-known intermediate snail host for human and animal fascioliasis, screening collected snails for trematode cercariae, alongside molecular xenomonitoring, did not yield equivocal evidence of active fluke infection. However, the newly recognized presence of this alien intermediate snail host within Lake Malawi, and along the Shire River Valley, flags a new concern in altered local transmission potential for human and animal fascioliasis.

Citer ce document

Jones, S., Juhász, A., Makaula, P., Cunningham, L., Archer, J., Nkolokosa, C., Namacha, G., Kambewa, E., Lally, D., Kapira, D., Chammudzi, P., Kayuni, S., Musaya, J., Stothard, J. (2024). A first report of Pseudosuccinea columella (Say, 1817), an alien intermediate host for liver fluke, in Malawi. https://doi.org/10.1186/s13071-024-06241-5

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Voir l'article sur le site de la revue

Auteur(s)

S. Jones Alexandra Juhász Peter Makaula Larry J. Cunningham John Archer Clinton Nkolokosa Gladys Namacha Emma Kambewa David Lally Donales Kapira P. Chammudzi Sekeleghe A. Kayuni Janelisa Musaya J. Russell Stothard

Statistiques

Consultations : 1

Téléchargements : 0