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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Hunting behaviour of the wild population of river otter (Lutra lutra) in conditions of the shallow river.
 POJEROVÁ, Lucie
Eurasian otter belongs to the group of endangered species. Its decrease was caused by the decline of suitable biotopes and the pollution of waste water. The human activity is considered to be another important reason for its decrease. Eurasian otters were hunted for their fur and for the losses on fish population. Although the number of Eurasian otter has been increasing lately, it is still important to protect these carnivorous animals. This bachelor thesis deals with the issue of foraging behaviour of the wild population of Eurasian otter. The aim of the thesis is to demonstrate the problems of otter?s foraging behaviour in shallow river; mainly the technique of this type of hunting. It was found that in the shallow river of the Lužnice River, the otters prefer rather the hunt-type of ?patch fishing?, which is usual while hunting in deep water. This kind of hunt has different characteristic since the preys are fish which are active during the daytime, contrary to inactive preys known from deep water of lakes and sea coasts. In the Lužnice River there were observed male and female otters and juvenile individuals. There was also observed the number of diving sessions during hunting session, the number of dives and hunting success set by the number of successful diving sessions.
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