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Title: Intermediate hosts of Angiostrongylus cantonensis in Tenerife, Spain
Author: Martin-Alonso, Aarón
Abreu Yanes, Estefanía
Feliu José, Carlos
Mas-Coma, Santiago
Bargues, María Dolores
Valladares, Basilio
Foronda, Pilar
Keywords: Parasitologia
Relacions hoste-paràsit
Tenerife (Canàries)
Host-parasite relationships
Tenerife (Canary Islands)
Issue Date: 24-Mar-2015
Publisher: Public Library of Science (PLoS)
Abstract: The nematode Angiostrongylus cantonensis is the causative agent of human angiostrongy- liasis, the main clinical manifestation of which is eosinophilic meningitis. Although this para- site has been found recently in its definitive rat host in Tenerife (Canary Islands, Spain), showing a widespread distribution over the north-east part of the island, there are no avail- able data regarding which snail and/or slug species are acting as intermediate hosts on this island. Consequently, the objective of this work was to determine the possible role of three mollusc species, Plutonia lamarckii , Cornu aspersum and Theba pisana , as intermediate hosts of A . cantonensis in Tenerife. Between 2011 and 2014, 233 molluscs were collected from five biotopes where rats had been found previously to harbor either adult worms or an- tibodies against A . cantonensis , and the identification was carried out on the basis of mor- phological features and a LAMP technique. The prevalence of A . cantonensis larvae in the mollusc samples, based on morphological identification, was 19.3%, whereas 59 out of the 98 individuals (60.2%) analyzed by LAMP were positive. Positive results were obtained for the three mollusc species analyzed and two of the positive samples, both obtained from P . lamarckii , were confirmed as positive by 18S rRNA and ITS1 PCR. Sequence analysis of 18S rRNA PCR products showed 100% similarity with previously published A . cantonensis sequences. These results may be relevant from a public health point of view, since all the biotopes from which the samples were obtained were in inhabited areas or areas with human activity, but it is also important from the perspective of a possible transmission to other accidental hosts, such as dogs and horses, animals that are present in some of the areas analyzed.
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It is part of: PLoS One, 2015, vol. 10, num. 3, p. 1-10
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ISSN: 1932-6203
Appears in Collections:Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)

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