Importance of Land Snails in Dicrocoeliosis Epidemiology
نویسندگان
چکیده
منابع مشابه
Microbiological and Chemical Analysis of Land Snails Commercialised in Sicily
In this study 160 samples of snails belonging to the species Helix aspersa maxima and Helix aspersa muller were examined for chemical and microbiological analysis. Samples came from Greece and Poland. Results showed mean concentration of cadmium (0.35±0.036 mg/kg) and lead (0.05±0.013 mg/kg) much higher than the limit of detection. Mercury levels in both species were not detected. Microbiologic...
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The classic evolutionary hypothesis of ecological opportunity proposes that both heterogeneity of resources and freedom from enemies promote phenotypic divergence as a response to increased niche availability. Although phenotypic divergence and speciation have often been inferred to be the primary consequences of the release from competition or predation that accompanies a shift to a new adapti...
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Predator-prey interactions are major processes promoting phenotypic evolution. However, it remains unclear how predation causes morphological and behavioural diversity in prey species and how it might lead to speciation. Here, we show that substantial divergence in the phenotypic traits of prey species has occurred among closely related land snails as a result of adaptation to predator attacks....
متن کامل1. Hypometabolism in land snails: Controlled or passive phenomenon?
Hypometabolism in land snails is an adaptive mechanism enabling survival in unfavourable environmental conditions such as the cold, frost, heat and drought. Both estivation and winter torpor are evoked by changes in ambient temperature, and humidity. Moreover, winter torpor is evoked by a decrease in photoperiod. But there is a growing body of evidence that maintenance in hypometabolic state an...
متن کاملPrecise but Fortuitous Convergence in Pleistocene Land Snails from Bermuda
Two convergences between subgenera of Bermudian land snails [P. (Poecilozonites) and P. (Gastrelasmus)] were initiated when a taxon of one subgenus evolved to the very different size range of the other. Entrance into this new size range produced or required a set of correlated changes in shape, color, and thickness that resulted in very precise convergences. Some of these ancillary changes were...
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ژورنال
عنوان ژورنال: Turkish Journal of Parasitology
سال: 2017
ISSN: 1300-6320,2146-3077
DOI: 10.5152/tpd.2017.5177