title: Angiostrongylus cantonensis: experimental study on the susceptibility of apple snails, Pomacea canaliculata compared to Pila polita.
abstract: Six groups (15 snails/group) of Pomacea canaliculata and Pila polita were infected orally with 0 (control), 200, 400, 800, 1600 and 3200 first-stage Angiostrongylus cantonensis larvae (L1). The respective mean+/-SD third stage larvae (L3) worm recovery 1-month post-infection (p.i.) for P. canaliculata was 0, 1.4+/-5.42 (0.7%), 0.13+/-0.35 (0.03%), 0.07+/-0.26 (0.009%), 0.07+/-0.26 (0.004%), 0, and for P. polita 0, 64.33+/-21.38 (32.25%), 115.36+/-36.82 (28.93%), 265.33+/-90.01 (33.27%), 471.33+/-92.98 (29.60%) and 849.00+/-243.23 (26.61%). The susceptibility of A. cantonensis in P. polita was dose-dependent (p<0.001). In the three groups (nine snails/group) of P. polita given 500 L1, we studied the distribution of L3 in the internal organs (i.e., foot, head+esophagus, kidney, albumin gland, mantle, intestine, digestive gland) and found the highest density after 1, 2 and 3 months p.i. in the mantle at 29.37%, 31.09% and 37.45%. The infection rate in P. canaliculata was too low to study distribution rates.
authors.affiliation: Food-Borne Parasite Research Group, Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. smarn_te@kku.ac.th
authors.forename: Smarn
authors.initials: S
authors.lastname: Tesana
authors.forename: Tuanchai
authors.initials: T
authors.lastname: Srisawangwong
authors.forename: Paiboon
authors.initials: P
authors.lastname: Sithithaworn
authors.forename: Thewarach
authors.initials: T
authors.lastname: Laha
mesh_terms: D000704:Analysis of Variance; D017185:Angiostrongylus cantonensis / Q000276:immunology / Q000502:physiology*; D000818:Animals; D004199:Disease Vectors; D007814:Larva / Q000276:immunology / Q000502:physiology; D051381:Rats; D012908:Snails / Q000145:classification / Q000276:immunology / Q000469:parasitology*; D013045:Species Specificity