THE SURVIVAL OF MUSCULAIRE TRICHINELLA NATIVA IN SEA WATER

Abstract

Seacoasts, especially the tidewide zone, are the place of concentration for many species of animals and birds that migrate here in order to find food, which is presented in the form of sea ejections of the marine mammals’ corpses or fallen terrestrial animals here. Taking into account the environmental significance of the transmission mechanisms of Trichinella through necrophagy, it is important to know how long Trichinella larvae are able to be viable in the corpses of dead animals in the tidewide zones, i.e. in zones that are exposed to sea water. The purpose of this study was to determine the time period of preserving the viability of musculaire Trichinella when they were in sea water. The experiment was performed on a model – a guinea pig carcass, which was kept in different environment at different temperature conditions. It was found out that Trichinella larvae in the muscles of guinea pigs remained viable in sea water (experimental group) during 73 days at room temperature. In fresh water (control group) they remained viable during 23 days. Under the conditions of a domestic refrigerator, Trichinella larvae remained viable during 113 days in the experimental group, while in the control group they lived no more than 33 days from the moment of setting the experiment. The results of the bioassay tests performed on Syrian hamsters turned out to be positive in all the cases; all the animals were infected with different infection intensity