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Table 3 Number of snails examined for trematode infections (in bold) and number of snails infected with different cercariae morphotypes in two communes, Nhgia Lac and Nhgia Phu, in Nam Dinh province, northern Vietnam

From: The role of rice fields, fish ponds and water canals for transmission of fish-borne zoonotic trematodes in aquaculture ponds in Nam Dinh Province, Vietnam

  Small canals Rice fields Fish ponds All habitats
Snail taxon and cercariae type No. of snails P (%) No. of snails P (%) No. of snails P (%) No. of snails P (%)
Melanoides tuberculata 2618   480   4601   7699  
 Parapleurolophocercous 348 13.3 44 9.2 292 6.3 684 8.9
 Echinostome 220 8.4 28 5.8 121 2.6 369 4.8
 Xiphidiocercariae 110 4.2 26 5.4 189 4.1 325 4.2
 Other 12 0.5 0 0.0 67 1.5 79 1.0
Other thiarids 1986   465   3705   6156  
 Parapleurolophocercous 45 2.3 0 0.0 22 0.6 67 1.1
 Echinostome 73 3.7 0 0.0 36 1.0 109 1.8
 Xiphidiocercariae 14 0.7 0 0.0 57 1.5 71 1.2
 Other 0 0.0 0 0.0 26 0.7 26 0.4
Bithynia fuchsiana 155   861   23   1039  
 Parapleurolophocercous 0 0.0 0 0.0 0 0.0 0 0.0
 Echinostome 0 0.0 9 1.0 1 4.3 10 1.0
 Xiphidiocercariae 14 9.0 50 5.8 3 13.0 67 6.4
 Other 0 0.0 2 0.2 0 0.0 2 0.2
Stenothyra messageri 1339   236   5   1580  
 Parapleurolophocercous 22 1.6 2 0.8 0 0.0 24 1.5
 Echinostome 0 0.0 0 0.0 0 0.0 0 0.0
 Xiphidiocercariae 5 0.4 0 0.0 0 0.0 5 0.3
 Other 1 0.1 0 0.0 0 0.0 1 0.1
Other species 1512   2231   1365   5108  
 Echinostome 5 0.3 26 1.2 3 0.2 34 0.7
 Xiphidiocercariae 0 0.0 1 0.0 0 0.0 1 0.0
 Other 2 0.1 3 0.1 0 0.0 5 0.1
  1. Overall prevalence of infection (P in %) is also given