The objective of this research was to describe the structure of larval digenean communities in the freshwater snail Chilina dombeyana in Lake Mascardi, an oligotrophic Andean Patagonian lake. In total, 1,923 snails were collected during 2 sampling periods. Specimens were examined, and 8 digenean species were identified, all with allogenic life cycles. The snail infracommunities nearly always occurred as single-species infections, distributed mainly in the hepatopancreas. The double infections (0.2%) were always prepatent, and involved a schistosome and the notocotylid Catatropis chilinae. The overall prevalence, the prevalence of C. chilinae, and total species prevalence (without C. chilinae) significantly increased with snail size. Catatropis chilinae was the dominant species in all months and across all snail size classes. Maximum richness (6) was reached in the size class between 16 and 18 mm. Diversity indices, i.e., the Shannon-Wiener Index and the reciprocal of the Simpson Index, increased with snail size only during the second sampling period. No robust evidence of antagonistic interactions was found in the digenean community of C. dombeyana from Lake Mascardi.
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April 2008
ECOLOGY-EPIDEMIOLOGY-BEHAVIOR|
April 01 2008
Larval Digenean Community Parasitizing the Freshwater Snail, Chilina dombeyana (Pulmonata: Chilinidae) in Patagonia, Argentina, with Special Reference to the Notocotylid Catatropis chilinae
Verónica R. Flores;
Verónica R. Flores
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina. [email protected]
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Liliana G. Semenas
Liliana G. Semenas
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina. [email protected]
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J Parasitol (2008) 94 (2): 305–313.
Citation
Verónica R. Flores, Liliana G. Semenas; Larval Digenean Community Parasitizing the Freshwater Snail, Chilina dombeyana (Pulmonata: Chilinidae) in Patagonia, Argentina, with Special Reference to the Notocotylid Catatropis chilinae. J Parasitol 1 April 2008; 94 (2): 305–313. doi: https://doi.org/10.1645/GE-1152.1
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