HD3557 Genetische monitoring otters (BO-11-011.01-092)

  • Kuiters, Loek (Project Leader)

Project: LNV project

Project Details


The Eurasian otter is a strictly protected species (Annex II, Habitats Directive) which is monitored since its reintroduction in the Netherlands in 2002 (population size, distribution area and mortality). This is done by using genetic techniques. It makes possible sound estimates of population size and allows monitoring of the genetic status of the population and the rate of inbreeding. Based on this information the most suitable protective measures can be taken.  

Genetic monitoring is carried out by isolating DNA-material from freshly dropped spraints (faeces). These are collected between October and February. Moreover, Alterra collects all dead found otters (ca. 25-30 each year) and assesses the causes of mortality. In case of traffic collission (ca. 80% of casualties), the location is documented as precise as possible. With this information an overview is made of all important bottlenecks along roads where mitigating measures should be taken.

Effective start/end date1/01/1431/12/14


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