Distribution and caracterization of environments used by otters in the coastal region of Santa Catarina state, Brazil

Studies related to the distribution and characterization of environments used by otters in the coastal region of Santa Catarina State has been conducted since 1999. Three different habitats are monitored: a river, a coastal island and a freshwater lake. Characterization of otter's shelters in the three environments related to the organization and use of the internal space is realized. One of the shelters has its temperature monitored in order to describe the relation of the frequency of use by the animal. The analysis of the diet of the specie together with visual observation is used to infer about the social organization. A close relation between the shelters with the geology and vegetation is found. The main preys of the otters indicate that it is basically a lonely animal. Depending on the season it can shows a group of two to four individuals. The preliminary results can be used as an indication to future measures related to the preservation and conservation of otters in the state.