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Using native Experiential Key Species to avoid exotic            species filling the emotional void: response to Battisti\u2019s \u2018Letter from the Conservation            Front Line\u2019. <i>Anim. Conserv.<\/i>          19: 488\u2013489.","DOI":"10.1111\/acv.12313"},{"key":"5","unstructured":"5. Bertolino,                S. and              Lurz, P. W.              W.          2013. <i>Callosciurus<\/i> squirrels: Worldwide            introductions, ecological impacts and recommendations to prevent the establishment of            new invasive populations. <i>Mammal Rev.<\/i>          43: 22\u201333."},{"key":"6","unstructured":"6. Bertolino,                S.,                Colangelo,              P., Mori,                E. and                Capizzi,            D.          2015. 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Biodiversity threats from outside to inside: effects of            alien grey squirrel (<i>Sciurus carolinensis<\/i>) on helminth community of            native red squirrel (<i>Sciurus vulgaris<\/i>).              <i>Parasitol. Res.<\/i>          114: 2621\u20132628.","DOI":"10.1007\/s00436-015-4466-3"},{"key":"20","doi-asserted-by":"crossref","unstructured":"20. Romeo,              C., McInnes,                C. J.,              Dale, T.,                Shuttleworth,              C.,              Bertolino,            S., Wauters,                L. A. and                Ferrari,            N.          2018. Disease, invasions and conservation: no evidence of            squirrelpox virus in grey squirrels introduced to Italy.              <i>Anim. Conserv.<\/i>.","DOI":"10.1111\/acv.12433"},{"key":"21","doi-asserted-by":"crossref","unstructured":"21. Signorile, A.                L., Reuman,                D. C.,              Lurz, P. W.              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Interspecific competition in tree squirrels: Do introduced grey squirrels (<i>Sciurus carolinensis<\/i>) deplete tree seeds  hoarded by red squirrels (<i>S. vulgaris<\/i>)? <i>Behav. Ecol. 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