European Bison (Bison Bonasus): Current State of the Species and Strategy for Its Conservation, Numéros 18 à 141
Council of Europe, 1 janv. 2004 - 82 pages
The European bison, the largest herbivore in Europe, was once widely distributed throughout western, central and south-eastern Europe. But by the end of the 19th century there were only two populations left in the the wild, this drastic decline caused by competition for food from deer, cattle grazing in forests, wars and heavy poaching. By 1945 there were only 54 animals with proven pedigrees in zoos, descended from 12 ancestor animals (of which a mere two are dominant genetically). Moves to restore the wild population began in the 1920s, and the restitution has successfully maintained the breed's purity. In 2000, there were nearly 2900 bison registered by the European Bison Pedigree Book, existing in 191 enclosed and 31 free-roaming herds. Despite this success, there remain concerns over the loss of genetic variability - the inbreeding affects life span, viability of young animals, and the interval between calving and skeletal growth - and the presence of, and susceptibility to, several diseases, including foot-and-mouth and TB. Management of the habitat and local populations of bison is necessary to maintain the optimum bison habitat. It remains an endangered species, and its full recovery and re-naturalisation in the wild cannot be guaranteed.
Avis des internautes - Rédiger un commentaire
Aucun commentaire n'a été trouvé aux emplacements habituels.
Autres éditions - Tout afficher
Acta Theriologica Action Plan animals areas Askania Nova Belarus Belousova Belovezhskaya Pushcha Bern Convention Białowieża Bialowieza Forest Bialowieza Primeval Forest Bieszczady Bieszczady Mountains Biological Biosphere Reserve bison Bison bonasus bison herds bison numbers Bison Pedigree Book Bison Specialist Group Borecka Bovidae bulls Bunevich A.N. captive Carpathians Caucasian Biosphere Reserve Caucasian Reserve caucasicus Caucasus Mountains Council of Europe E-mail EBPB ecological enclosed breeding centres English summary Europe European bison Bison European Bison Pedigree European bison populations extinction feeding forest complex Founder allele Founder genome free-living herds free-living populations free-ranging herds free-ranging populations gene pool genetic variability habitats inbreeding included Kalugin Kazmin Korochkina Krasiński Z.A. Krasiriski Lithuania Lowland line Lowland-Caucasian line natural North American bison Olech Perzanowski Poland Polish with English population of European programme protection Pucek range re-introduction region restitution Russian semi-free Sipko T.P. species subspecies Ukraine ungulates wild Wisents world population Zablotsky zubra zubrov