Individual study: Distribution and diet of reintroduced otters (Lutra lutra) on the river Ticino (NW Italy)
Prigioni C., Smiroldo G., Remonti L. & Balestrieri A. (2009) Distribution and diet of reintroduced otters (Lutra lutra) on the river Ticino (NW Italy). Hystrix, the Italian Journal of Mammalogy, 20, 45-54
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Release captive-bred individuals to re-establish or boost populations in native range
A study in 2008 along a river in northern Italy (Prigioni et al. 2009) found that the release of a pair of captive-bred Eurasian otters Lutra lutra resulted in a population that persisted for at least 11 years. Eleven years after the introduction of a pair of Eurasian otters, signs of otter presence were detected along at least three of the 10 contiguous stretches of river that were surveyed. In 1997, a pair of captive-bred otters was released at a site in an area where the species had been extirpated in the late 1980s. In June–September 2008, otter presence was monitored along 5 km of the river, in 10 stretches, each 500 m long. Monitoring entailed searches for spraints and anal secretions. Each river stretch was surveyed 8–11 times.
(Summarised by Paul Gerlach )