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FIRST REPORT OF THE NAMATODE CRUZIA TENTACULATA USING MOLLUSCS AS NATURAL INTERMEDIATE HOSTS, BASED ON MORPHOLOGY AND GENETIC MARKERS
18S rRNA
Strongyluris sp
Achatina fulica
Latipes erinaceus
Thaumastus taunaisii
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Resumo em Inglês
The life cycles of many parasitic nematodes include terrestrial gastropods as intermediate hosts. O Over the past few decades, a number of cases of parasitism between molluscs and medically important nematodes have been reported in Brazil, in particular, those involving the invasive giant African gastropod, Achatina fulica, and zoonoses caused by the nematodes Angiostrongylus cantonensis and Angiostrongylus costaricensis, the etiological agents of neuroangiostrongyliasis and abdominal angiostrongyliasis, respectively. In the present study, larvae found infecting A.fulica, Latipes erinaceus, and Thaumastus taunaisii, from two localities in the Brazilian state of Rio de Janeiro were characterized using light and scanning electron microscopy, and sequences of the 18S rRNA and MT-CO1 genes. Genetic markers allowed to identify the larvae collected in the present study Cruzia tentaculata, whose adults parasitize didelphid marsupials in the Americas. These findings indicate that both native and non-native gastropods may act as intermediate hosts
and represent a previously unnoticed heteroxenous life cycle of C. tentaculata.
Palavras-chave em inglês
MT-CO118S rRNA
Strongyluris sp
Achatina fulica
Latipes erinaceus
Thaumastus taunaisii
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