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It was observed that the Tarebia granifera plays a significant role in the control of a Biomphalaria peregrina population introduced in a permanent water body. The densities of this planorbid, which had reached high levels, were notably reduced by two important events: an increase of the water level due to heavy rains, and the introduction of the(More)
The need to know the distribution of mollusks considered to play an important medical role in Cuba through a geographic representation motivated us to develop a software capable of acting as a system for the retrieval of geographic information in which the requested data would be presented in maps. The system has been called DMIM and it is a useful tool for(More)
Morphometrics differences of 2 species of the genus Biomphalaria in Cuba (B. havanensis and B. orbignyi) were studied. These are potential intermediate hosts of schistosomiasis whose taxonomic location has been discussed. Of the variables measured the following coefficients were compared (length of the sheath of the penis/length of prepuce, caudal(More)
Neural system characterizes information in external stimulations by spatiotemporal encoding. When stimulated by the acupuncture, the neural system can evoke irregular electrical signals. In order to reveal the underlying mechanisms about the conduction and function of acupuncture, experiments are designed that different types of manual acupuncture (MA)(More)
The anatomic description of Physa cubensis, based on specimens collected in 5 different sites in Cuba, is presented. The anatomic characteristics of the reproductive system as well as mantle digitations give ground for affirming that this is a unique species with external morphological variations and thus it should be kept under the Physa genre. Besides,(More)
A study is made in 24 bodies of water in the Isle of Youth, which are considered the most representative, since they include dams, lagoons, seasonal ponds, and marshes. The indicators of abundance and coverage of mollusks and plants, respectively, are determined. It was found that the first varies according to the second. Some vital functions of mollusks(More)
A study was carried out on the molluscacidal action of agave (Agave legrelliana) on the mollusk Biomphalaria havanensis, host of Schistosoma. Different concentrations of the plant's juice extract were tested to determine lethal doses. 3 experimental series were carried out using 144 mollusks in each. LD50 = 0.14 mL/L and LD90 = 0.47 mL/L were determined(More)
A study of the density of river mollusks in six watercress groves is made. It is seen how densities of F. cubensis, intermediate host of fascioliasis in Cuba, is maintained with relative stability. The poor effectiveness of P. duryi as an agent of biologic control is demonstrated. The high density of P. cubensis, which seems to exert a certain regulatory(More)
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