Literature type: Scientific
Journal: Conservation Genetics
Volume: 8 , Pages: 197-207.
DOI: 10.1007/s10592-006-9162-5
Language:
English
Full reference: Ruokonen, M., Andersson, A.-C. & Tegelström, H. 2007. Using historical captive stocks in conservation. The case of the lesser white-fronted goose. Conservation Genetics 8: 197-207. https://www.dx.doi.org/10.1007/s10592-006-9162-5
Keywords: Hybrid, Captive, Supplementation, Reintroduction, Lesser white-fronted goose, Anser erythropus
Abstract:
Many captive stocks of economically or otherwise valuable species were established before the decline of the wild population. These stocks are potentially valuable sources of genetic variability, but their taxonomic identity and actual value is often uncertain. We studied the genetics of captive stocks of the threatened lesser white-fronted goose Anser erythropus maintained in Sweden and elsewhere in Europe. Analyses of mtDNA and nuclear microsatellite markers revealed that 36% of the individuals had a hybrid ancestry. Because the parental species are closely related it is unlikely that our analyses detected all hybrid individuals in the material. Because no ancestral polymorphism or introgression was observed in samples of wild populations, it is likely that the observed hybridisation has occurred in captivity. As a consequence of founder effect, drift and hybridisation, captive stocks were genetically differentiated from the wild populations of the lesser white-fronted goose. The high level of genetic diversity in the captive stocks is explained at least partially by hybridisation. The present captive stocks of the lesser white-fronted goose are considered unsuitable for further reintroduction, or supplementation: hybridisation has involved three species, the number of hybrids is high, and all the investigated captive stocks are similarly affected. The results highlight the potential shortcomings of using captive-bred individuals in supplementation and reintroduction projects, when the captive stocks have not been pedigreed and bred according to conservation principles.
Literature type: Book Chpt
Language:
English
Full reference: Vasiliev, V.V., Gauzer, M.E., Rustamov, E.A. & Belousova, A.V. 2006. The Lesser White-fronted Goose Anser erythropus in the south-east Caspian region of Turkmenistan. , Waterbirds around the world. Eds. G.C. Boere, C.A. Galbraith & D.A. Stroud. The Stationery Office, Edinburgh, UK. pp. 629-632.
Keywords: Turkmenistan, Caspian Sea, winter count, mid-winter, survey
Abstract:
The south-east Caspian region of Turkmenistan is an important staging and wintering area for the globally threatened Lesser White-fronted Goose Anser erythropus. During the period 1975-2003, surveys carried out in late autumn and mid-winter recorded Lesser White-fronted Geese at a total of 14 sites. The numbers of geese fluctuated widely from a maximum of 1 850 individuals in November 1999 to none in several years. The most important sites were the Turkmenbashi, Balkan, Mihkailovskiy and Severo-Cheleken Bays in the central part of the Caspian coast of Turkmenistan, and the delta of the Atrek River in the southern part. Changes in the distribution and numbers of geese have occurred as a result of habitat degradation or alteration and other anthropogenic pressures, especially hunting. Various measures are proposed for the protection and management of the Lesser White-fronted Goose in Turkmenistan, and it is suggested that these measures could be used in the development of an international action plan for the conservation of the species in the Caspian region as a whole.
Literature type: General
Language:
English
Full reference: Morozov, V.V. 2006. The Lesser White-fronted Goose Anser erythropus at the verge of the millennium. Waterbirds around the world. Eds. G.C. Boere, C.A. Galbraith & D.A. Stroud. The Stationery Office, Edinburgh, UK. pp. 380-381.
Keywords: population status, world population, Russia
Literature type: Book Chpt
Language:
English
Full reference: Andersson, Å. & Larsson, T. 2006. Reintroduction of Lesser White-fronted Goose Anser erythropus in Swedish Lapland. , In: Boere, G.C., Galbraith, C.A. & Stroud, D.A. Waterbirds around the world. The stationary office, Edinburgh, UK. Pp. 635-636.
Keywords: reintroduction
Literature type: Rep.article
Language:
English
Full reference: Timonen, S. & Tolvanen, P. 2004. Field survey of Lesser White-fronted Goose at the Kola Peninsula, north-western Russia, in June 2001. , In: Aarvak, T. & Timonen, S. (eds.). Fennoscandian Lesser White-fronted Goose conservation project. Report 2001-2003. WWF Finland Report No 20 & Norwegian Ornithological Society, NOF Rapportserie Report No 1-2004: pp. 30-32.
Keywords: Annual report, monitoring
Literature type: Rep.article
Language:
English
Full reference: Tar, J. 2004. Migration of Lesser White-fronted Goose in Hungary and protection of their Hungarian staging sites , In: Aarvak, T. & Timonen, S. (eds.). Fennoscandian Lesser White-fronted Goose conservation project. Report 2001-2003. WWF Finland Report No 20 & Norwegian Ornithological Society, NOF Rapportserie Report No 1-2004: pp. 33-35.
Keywords: Annual report, monitoring
Literature type: Scientific
Journal: Conservation Genetics
Volume: 5 , Pages: 501-512.
DOI: 10.1023/B:COGE.0000041019.27119.b4
Language:
English
Full reference: Ruokonen, M., Kvist, L., Aarvak, T., Markkola, J., Morozov, V.V., Øien, I.J., Syroechkovsky Jr., E.E., Tolvanen, P. & Lumme, J. 2004. Population genetic structure and conservation of the lesser white-fronted goose (Anser erythropus). Conservation Genetics 5: 501-512. https://www.dx.doi.org/10.1023/B:COGE.0000041019.27119.b4
Keywords: Anser erythropus, lesser white-fronted goose, Palearctic, management unit, population genetic Structure
Abstract:
The lesser white-fronted goose is a sub-Arctic species with a currently fragmented breeding range, which extends from Fennoscandia to easternmost Siberia. The population started to decline at the beginning of the last century and, with a current world population estimate of 25,000 individuals, it is the most threatened of the Palearctic goose species. Of these, only 30–50 pairs breed in Fennoscandia. A fragment of the control region of mtDNA was sequenced from 110 individuals from four breeding, one staging and two wintering areas to study geographic subdivisions and gene flow. Sequences defined 15 mtDNA haplotypes that were assigned to two mtDNA lineages. Both the mtDNA lineages were found from all sampled localities indicating a common ancestry and/or some level of gene flow. Analyses of molecular variance showed significant structuring among populations (φ ST 0.220, P < 0.001). The results presented here together with ecological data indicate that the lesser white-fronted goose is fragmented into three distinctive subpopulations, and thus, the conservation status of the species should be reconsidered.
Literature type: Rep.article
Language:
English
Full reference: Mineev, O.Y. & Mineev, Y.N. 2004. Distribution of Lesser White-fronted Goose in the Malozemelskaya Tundra in Northern Russia. , In: Aarvak, T. & Timonen, S. (eds.). Fennoscandian Lesser White-fronted Goose conservation project. Report 2001-2003. WWF Finland Report No 20 & Norwegian Ornithological Society, NOF Rapportserie Report No 1-2004: pp. 44-46.
Keywords: Annual report, monitoring
Literature type: Rep.article
Language:
English
Full reference: Markkola, J., Luukkonen, A. & Leinonen, A. 2004. The spring migration of the Lesser White-fronted Goose on Bothnian Bay coast, Finland, in 2001-2003. , In: Aarvak, T. & Timonen, S. (eds.). Fennoscandian Lesser White-fronted Goose conservation project. Report 2001-2003. WWF Finland Report No 20 & Norwegian Ornithological Society, NOF Rapportserie Report No 1-2004: pp. 14-18.
Keywords: Annual report, monitoring, Finland
Literature type: Rep.article
Language:
English
Full reference: Luukkonen, A. & Markkola, J. 2004. The autumn migration survey of Lesser White-fronted Goose in Bothnian Bay area, Finland, in 2002. , In: Aarvak, T. & Timonen, S. (eds.). Fennoscandian Lesser White-fronted Goose conservation project. Report 2001-2003. WWF Finland Report No 20 & Norwegian Ornithological Society, NOF Rapportserie Report No 1-2004: p. 29.
Keywords: Annual report, monitoring
Number of results: 176