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Providing evidence to improve practice

Individual study: Demographic and genetic evaluation of an American marten reintroduction

Published source details

Swanson B.J., Peters L.R. & Kyle C.J. (2006) Demographic and genetic evaluation of an American marten reintroduction. Journal of Mammalogy, 87, 272-280


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Translocate to re-establish or boost populations in native range Terrestrial Mammal Conservation

A study in 2001–2003 in woodland across Peninsula Michigan, USA (34) found that translocated American martens Martes americana established a population. Ninety-four trapped martens had a sex ratio of 1.5 males for each female (1.9:1 considering just adults). This was not significantly different from the ratio of 2:1 which authors stated that for trapped animals, indicated that the harvest was sustainable. The age ratio was 3.3 juveniles (≤1.5 years old) for each adult (≥2.5 years old) female. This also was not significantly different from the ratio of 3:1, stated as indicating a sustainable harvest. Translocations into five areas in Peninsula Michigan, where martens had been extirpated, occurred in 1955–1957, 1968–1970 and 1979. These involved 276 martens. In 1989–1992, sixty-six martens were translocated internally within Peninsula Michigan. Marten trapping was permitted in limited areas from 2000. Sex and age data were determined for 94 martens obtained from commercial trappers in 2001–2003.

(Summarised by Casey Johnson )