Document Detail


Parasitic infections in mixed system-based heliciculture farms: dynamics and key epidemiological factors.
MedLine Citation:
PMID:  23279777     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
SUMMARY Heliciculture is an excellent alternative to obtain edible snails but its viability is seriously threatened by pathogens. A parasitological survey was conducted in 3 mixed system-based heliciculture farms in Galicia (NW Spain), with the species Tetrahymena rostrata, Tetrahymena limacis, Tetratrichomonas limacis, Cryptobia helicogenae, Brachylaima aspersae (metacercariae and sporocysts), Alloionema appendiculatum, Nemhelix bakeri, and Riccardoella limacum being commonly found infecting Helix aspersa aspersa (petit-gris) snails. With the exception of C. helicogenae, N. bakeri, and B. aspersae sporocysts, all species were also detected in Helix aspersa maxima (gros-gris) snails, although generally with lower parameters. Most monoxenous infections, and consequently multiple parasitism, exhibited a rising trend during the first 2 months of intensive mating, with tendencies being slowed down or even reversed during the third month as a result of accumulated mortality and a sampling-derived reduction in host density. No parasites were vertically transmitted and infections were initially acquired from invading gastropod and micromammal reservoirs during fattening. Finally, artificial hibernation reduced significantly the prevalence of most species. These results confirm the importance of parasites in heliciculture and emphasize the need to prevent the entry of wild reservoirs into the farms and to rapidly remove the carcasses of dead snails from the reproduction units and fattening pens.
Authors:
P Segade; J García-Estévez; C Arias; R Iglesias
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-2
Journal Detail:
Title:  Parasitology     Volume:  -     ISSN:  1469-8161     ISO Abbreviation:  Parasitology     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401121     Medline TA:  Parasitology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-16     Citation Subset:  -    
Affiliation:
Laboratorio de Parasitología, Facultad de Biología, Edificio de Ciencias Experimentales, Campus de Lagoas-Marcosende s/n, Universidad de Vigo, 36310 Vigo, Spain.
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