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The life cycle of the nematode Angiostrongylus cantonensis involves rats as the definitive host and slugs and snails as intermediate hosts. Humans can become infected upon ingestion of intermediate or paratenic (passive carrier) hosts containing stage L3 A. cantonensis larvae. Here, we report a quantitative PCR (qPCR) assay that provides a reliable, relative measure of parasite load in intermed...

Nematode parasites of spiders and harvestmen are restricted to members of the family Mermithidae . A literature review shows that nematode parasitism of arachnids is worldwide and at least 5 1 species of spiders and harvestmen have been recorded as hosts of mermithid nematodes . Infected spiders have varied habits and it is postulated that two types of parasite life cycles probably exist and th...

This study used a partial sequence of the mitochondrial cox1 gene for reconstruction interrelationship adult and larval stages Spirometra obtained from Cerdocyon thous, Leopardus munoai, Canis familiaris, Didelphis albiventris Philodryas patagoniensis in Uruguay. The phylogenetic analysis showed that they were grouped with decipiens Americas high bootstrap support. According to recent studies, ...

Toxocara canis, the parasitic roundworm of dogs, can infect a number of paratenic hosts, such as mice and humans, due to the widespread dissemination of its ova in the environment. In these paratenic hosts, larvae have been shown to exhibit a predilection for the central nervous system, resulting in an increasing number of parasites migrating to the brain as infection progresses. In an initial ...

Amphibians (tadpoles of the frog Bombina bombina [L.] and the newt Triturus vulgaris [L.]) and aquatic insects (larvae of the alderfly Sialis lutaria [L.] [Megaloptera], dragonflies Sympetrum sanguineum [Miller] and Coenagrion puella [L.] [Odonata], and the caddisfly Oligotrichia striati [L.] [Trichoptera]) were found to serve as paratenic hosts for the third-stage larvae (L3) of the nematode A...