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 NaturalizationThis species is not yet naturalised in Belgium.
Establishment potential in Belgium : high
It is already invasive in : Italy
Invasiveness
More on naturalization and invasiveness: Finlayson's squirrel lives in deciduous and conifer forests, parks and gardens, both in suburban and rural areas.
Impacts on Species
Impacts on Ecosystems
More on impacts: Finlayson’s squirrels feed mainly on seeds, fruits, buds, and flowers, and switched from one resource to another according to availability. They have been also reported to damage trees by bark-stripping both in parks and in semi-natural forests, inflicting wounds that degrade timber quality severely and favor the penetration of insects and fungi. Damages are especially important in parks with high concentrations of animals, where they may even compromise tree survival.
References:
Aloise, G. & Bertolino, S. (2005)
Free-ranging population of the Finlayson's squirrel Callosciurus finlaysonii (Rodentia, Sciuridae) in South Italy.
Hystrix It. J. Mamm. 16(1): 70-74.
Bertolino, S & Genovesi, P. (2005)
The application of the European strategy on invasive alien species: an example with introduced squirrels.
Hystrix It. J. Mamm. (n.s.) 16 (1): 59-69
Bertolino, S. (2009)
Animal trade and non-indigenous species introduction: the world-wide spread of squirrels.
 Diversity and Distributions 15(4): 701–708.
Bertolino, S. & Lurz, P.W.W. (2012)
Callosciurus squirrels: worldwide introductions, ecological impacts and recommendations to prevent the establishment of new invasive populations.
Mammal Review, in press.
Bertolino, S., Currado, I. & Mazzoglio, P.J. (1999)
Finlayson’s (Variable) Squirrel Callosciurus
finlaysonii in Italy.
Mammalia 63: 522-525.
Bertolino, S., Mazzoglio, P.J., Vaiana, M. & Currado, I. (2004)
Activity budget and foraging behaviour of introduced Callosciurus finlaysonii (Rodentia, Sciuridae) in Italy.
Journal of Mammalogy 85: 254-259.
Bertolino,S., Currado, I., Mazzolgio, P.J. & Amori, G. (2000)
Native and alien squirrels in Italy.
Hystrix 11(2): 65-74.
Dijkstra, V. & Dekker, J. (2008)
Risico-assessment uitheemse eekhoorns.
Rapport van de Zoogdiervereniging VZZ in opdracht van Commissie Invasieve Exoten.
Kumschick, S., Alba, C., Hufbauer, R.A. & Nentwig, W. (2011)
Weak or strong invaders? A comparison of impact between the native and invaded ranges of mammals and birds alien to Europe.
 Diversity and Distributions 17: 663–672.
Mitchell-Jones, A. J., Amori, G., Bogdanowicz, W., Kryštufek, B., Reijnders, P. J. H., Spitzenberger, F., Stubbe, M., Thissen, J. B. M., Vohralík, V. & Zima, J. (1999)
The Atlas of European Mammals.
Poyser, London.
Nentwig, W., Kuhnel, E. & Bacher, S. (2009)
A Generic Impact-Scoring System Applied to Alien
Mammals in Europe.
Conservation Biology 24(1): 302–311.
Palmer, G.H., Koprowski, J.L. & Pernas, T. (2007)
Tree squirrels as invasive species: conservation an management implications.
In: G.W. Witmer et al (eds), Managing vertebrate invasive species: proceedings of an international symposium. USDA/APHIS Wildlife Services, National Wildlife Research Center, Fort Collins, Colorado, USA.
Tillon, L., Joicey, J. & Chapuis, J.L. (2007)
Les écureuils introduits en France et en Europe occidentale.
In 13ème Forum des gestionnaires: espèces exotiques envahissantes, une menace majeure pour la biodiversité.
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