Literature type: Scientific
Journal: Ornis svecica
Volume: 31 , Pages: 125–138
Full reference: Liljebäck, N., Koffijberg, K., Kowallik, C., Månsson, J. & Andersson, Å. 2021. Use of foster parents in species conservation may cause conflicting objectives: Hybridization between Lesser White-fronted Goose Anser erythropus and Barnacle Goose Branta leucopsis. Ornis svecica 31: 125–138 https://www.dx.doi.org/10.34080/OS.V31.22430
Following the use of Barnacle Geese Branta leucopsis as foster parents in a conservation program for the endangered Lesser White-fronted Goose Anser erythropus in Sweden 1981–1999, mixed breeding pairs of the two species were established in the wild. We find indications that this was related to shared moulting habits of the two species in the Bothnian Sea during late 1990s. Starting in 2003, five mixed pairs produced at least 49 free-flying hybrid offspring until 2013, when the last breeding was confirmed. Reported numbers of hybrids did not increase in parallel to the production of young hybrids over time. After 2013, the number of hybrids started to decrease in Sweden and the Netherlands. Lower numbers of hybrids than expected can partly be explained by management actions taken, but may also be associated with low survival due to genetic outbreeding. Mixed pairs and their offspring entirely adopted the migratory habits of Barnacle Geese, overlapping very little with sites used by Lesser White-fronted Geese. We find no evidence that the hybrids ever posed a serious threat to Lesser White-fronted Geese breeding in Fennoscandia.
Literature type: Scientific
Journal: Bulletin of Nizhnevartovsk State University
Volume: 2020(1) , Pages: 98–103.
Language: Russian (In Russian with English summary)Download:
Full reference: Emtsev, A. A. & Porgunyov, A. V. 2020. Additional information about the lesser white-fronted goose migration stops in the Surgut district of the Khanty-Mansiysk autonomous okrug — Ugra and the problem of species conservation. Bulletin of Nizhnevartovsk State University 2020(1): 98–103. https://www.dx.doi.org/10.36906/2311-4444/20-1/15
The analysis of the photographs sent by the hunters from Sytomino village, Khanty-Mansiysk Autonomous Okrug – Ugra, together with the further survey detected the place of migration stops of Lesser White-fronted Geese in the Middle Ob valley. The birds were staying at the small lake 3.5 km east of the village. On September 12, 2011, one wounded individual was found near the lake at the complex raised bog 9.5 km southwest of the city of Lyantor. Several ways can be suggested by us to save flying Lesser Whitefronted Geese and other species of vulnerable animals at the territory of the autonomous okrug. This will include the following measures to take: an obligatory exam for hunters to be able to identify some species of the regional fauna; large penalties for illegal hunting, more active propaganda of respect for nature and educational work and developing hunting culture. The article also covers economic and organizational issues.
Literature type: Proceedings
Journal: Ornis norvegica
Volume: 36 , Pages: 47-51.
Full reference: Yerokhov, S. 2013. The current status of the Lesser White-fronted Goose Anser erythropus in Kazakhstan: monitoring, threats and conservation measures , Proceedings of the 14th meeting of the Goose Specialist Group of the IUCN Species Survival Commission and Wetlands International. Ornis norvegica 36: 47-56.
Within the framework of the National Action Plan (hereafter NAP) for the globally threatened Lesser White-fronted Goose Anser erythropus developed in the republic of Kazakhstan between 2011 and 2012, a number of measures are planned for the forthcoming three years (2012–2014). On the basis of scientific data received on this species in the last decades, and making use of available experience from other countries, it is proposed to carry out a variety of practical activities regarding goose protection, in particular in order to reduce the negative influence of a number of anthropogenic factors upon Lesser White-fronted Goose, in particular the influence of hunting on this protected species. Considering that implementation of such plans have not previously been applied to the fauna of Kazakhstan, this NAP will serve as a model as to how to implement effective management of other species and populations in order to reduce and eliminate negative factors affecting biodiversity and habitat.
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