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Biology and Conservation of Musteloids$
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David W. Macdonald, Chris Newman, and Lauren A. Harrington

Print publication date: 2017

Print ISBN-13: 9780198759805

Published to Oxford Scholarship Online: January 2018

DOI: 10.1093/oso/9780198759805.001.0001

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Evolution, natural history, and conservation of black-footed ferrets

Evolution, natural history, and conservation of black-footed ferrets

Chapter:
(p.340) Chapter 15 Evolution, natural history, and conservation of black-footed ferrets
Source:
Biology and Conservation of Musteloids
Author(s):

Dean E. Biggins

David A. Eads

Publisher:
Oxford University Press
DOI:10.1093/oso/9780198759805.003.0015

Black-footed ferrets were reduced to a remnant population of 10 in 1985 due to diseases (plague, canine distemper), but successful captive breeding and releases have improved the prospects for ferret recovery. Comparisons between black-footed ferrets and Siberian polecats, close relatives that can interbreed and produce fertile offspring, allow the following evolutionary speculation. Predation on ferrets and polecats tends to narrow their niches and promote specialization due to requirements for escape habitats. In Asia, that influence is countered by the larger and more diverse area of steppe and alpine meadow habitats for polecats, and by plague which causes large variation in prey abundance. In North America, the selective pressure favoring specialization in ferrets on prairie dog prey and burrows had no strong counter-force before plague invaded. Plague is an immense challenge to black-footed ferret recovery, and several management tools including vaccines and vector control may be necessary to conserve the species.

Keywords:   anti-predator, behaviour, captive breeding, disease, plague, prairie dog, predation, reintroduction, Siberian polecat

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