Nest tree and site selection of an introduced population of red-bellied squirrels (<i>Sciurus aureogaster</i>)

Palmer, Geoffrey H.; Koprowski, John L.; Pernas, Anthony J.

doi:10.1644/12-mamm-a-308.1

Cited by 7 publications

(12 citation statements)

References 26 publications

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“…Although Hurricane Andrew, a category 5 hurricane, submerged the island under a 6 m storm surge in 1992 (Ogden 1992), squirrels survived the storm ) and spread to nearby Sands Key and Old Rhodes Key, but no longer occurred on Adams Key (Palmer et al 2014). An effort to remove this introduced population from the islands of south Florida began in 2008, and 49 individuals of both color morphs had been removed from Elliott Key and Sands Key by 2012 (Pernas and Clark 2011;Palmer 2012). No fossils are known.…”

Section: Distributionmentioning

confidence: 99%

“…The exotic population of S. aureogaster in Florida inhabits tropical evergreen, broadleaf hammock forest where Bursera simaruba, Coccoloba diversifolia, Guapira discolor, Krugiodendron ferreum, Lysiloma latisiliquum, Metopium toxiferum, and Swietenia mahagoni are the most common trees (Fig. 4; Brown and McGuire 1975;Palmer et al 2007Palmer et al , 2013.…”

Section: Ecologymentioning

confidence: 99%

“…In Florida, exotic S. aureogaster feds heavily on the fruits and seeds of wild mastic (Sideroxylon foetidissimum), papaya (Carica papaya), sea grape (Coccoloba uvifera), thatch palm (Thrinax parviflora), coconut (Cocos nucifera), and Australian pine (Casuarina equisetifolia-Brown and McGuire 1975). However, nonnative plant species like papaya, coconut, and Australian pine were eradicated from the island beginning in the mid-1980s, which in turn forced squirrels to focus foraging efforts on native plant species (Palmer et al 2007(Palmer et al , 2013.…”

Section: Ecologymentioning

confidence: 99%

“…Conservation of Nature and Natural Resources (BirdLife International 2016), also appears to have some dietary overlap with the exotic population of S. aureogaster (Palmer et al 2007;Palmer 2012). In Zacatecas, the occurrence of S. aureogaster is positively associated with Peromyscus spicilegus (gleaning deermouse) and Neotoma mexicana (Mexican woodrat-Matson 1982).…”

Section: Mammalian Species 87mentioning

confidence: 99%

“…S. aureogaster builds nests that are > 30 cm in diameter and are located at heights > 6 m aboveground (Dalquest 1953;Hall and Dalquest 1963), with a mean height of 17.62 m (± 5.45 SD) in Michoacán (RamosLara and Cervantes 2007) and 7.6 m (± 0.24 SE) in Florida (Palmer et al 2013). Nests have a mean aspect of 6.56° (± 9.82° SE) around the trunk of the nest tree (Palmer et al 2013). In Michoacán, leaf nests are located in the forks and branches of trees and consist of 2 shapes: spherical and platform, respectively (Fig.…”

Section: Behaviormentioning

confidence: 99%

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Sciurus aureogaster (Rodentia: Sciuridae)

Koprowski¹,

de²,

Palmer³

et al. 2017

Mammalian Species

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Sciurus aureogaster Cuvier, 1829 is a sciurid commonly called the red-bellied squirrel. It is a medium-bodied tree squirrel quite variable in color throughout its geographic distribution; partial and complete melanism are common. One of 28 species in the genus, S. aureogaster is endemic to Mexico and Guatemala, and introduced to the Florida Keys, United States. S. aureogaster inhabits a wide variety of ecosystems and plant communities, is diurnal, arboreal, and uses leaf nests and tree cavities for nesting. S. aureogaster feeds primarily on acorns (Quercus) and pine (Pinus) seeds throughout most of its distribution, but individuals are known to damage corn and other plantation crops including cacao. Litter size ranges between 1 and 4 young. S. aureogaster is listed as "Least Concern" by the International Union for Conservation of Nature and Natural Resources.

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Section: Distributionmentioning

confidence: 99%

Section: Ecologymentioning

confidence: 99%

Section: Ecologymentioning

confidence: 99%

Section: Mammalian Species 87mentioning

confidence: 99%

Section: Behaviormentioning

confidence: 99%

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Sciurus aureogaster (Rodentia: Sciuridae)

Koprowski¹,

de²,

Palmer³

et al. 2017

Mammalian Species

View full text Add to dashboard Cite

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Climatic niche and range shifts of grey squirrels (Sciurus carolinensis Gmelin) in Europe: An invasive pest displacing native squirrels

Yang

Nie

et al. 2023

Pest Management Science

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BACKGROUNDAs an invasive pest from North America, grey squirrels (GSs; Sciurus carolinensis Gmelin) are displacing native squirrels in Europe. However, the climatic niche and range dynamics of GSs in Europe remain largely unknown. Through niche and range dynamic models, we investigated climatic niche and range shifts between introduced GSs in Europe and native GSs in North America.RESULTSGSs in North America can survive in more variable climatic conditions and have much wider climatic niche breadth than do GSs in Europe. Based on climate, the potential range of GSs in Europe included primarily Britain, Ireland, and Italy, whereas the potential range of GSs in North America included vast regions of western and southern Europe. If GSs in Europe could occupy the same climatic niche space and potential range as GSs in North America, they would occupy an area ca. 2.45 times the size of their current range. The unfilling ranges of GSs in Europe relative to those of GSs in North America were primarily in France, Italy, Spain, Croatia, and Portugal.CONCLUSIONOur observations implied that GSs in Europe have significant invasion potential, and that range projections based on their occurrence records in Europe may underestimate their invasion risk. Given that small niche shifts between GSs in Europe and in North America could lead to large range shifts, niche shifts could be a sensitive indicator in invasion risk assessment. The identified unfilling ranges of the GS in Europe should be prioritized in combating GS invasions in the future. © 2023 Society of Chemical Industry.

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Assessment of Detection Methods and Vegetation Associations for Introduced Finlayson’s Squirrels (Callosciurus finlaysonii) in Italy

Ancillotto

Notomista

Mori

et al. 2018

Environmental Management

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Managing biological invasions requires rapid, cost-effective assessments of introduced species' occurrence, and a good understanding of the species' vegetation associations. This is particularly true for species that are elusive or may spread rapidly. Finlayson's squirrel (Callosciurus finlaysonii) is native to Thailand and southeastern Asia, and two introduced populations occur in peninsular Italy. One of the two introduced populations is rapidly expanding, but neither effective monitoring protocols nor reliable information on vegetation associations are available. To fill this gap, we conducted visual surveys and hair tube sampling in a periurban landscape of southern Italy to compare the effectiveness of these two methods in assessing presence of Finlayson's squirrel. We also determined the species' association with vegetation types at detection locations and nesting sites. Both visual and hair tube sampling effectively assessed the species' presence, but hair tubes resulted in fewer false absences. Moreover, when we controlled for the costs of labor and equipment, hair tubes were 33.1% less expensive than visual sampling. Presence of squirrels and their nests was positively correlated with shrub species richness, indicating that the occurrence of forests with well-developed understory may inhibit the spread of the species.

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Nest tree and site selection of an introduced population of red-bellied squirrels (Sciurus aureogaster)

Cited by 7 publications

References 26 publications

Sciurus aureogaster (Rodentia: Sciuridae)

Sciurus aureogaster (Rodentia: Sciuridae)

Climatic niche and range shifts of grey squirrels (Sciurus carolinensis Gmelin) in Europe: An invasive pest displacing native squirrels

Assessment of Detection Methods and Vegetation Associations for Introduced Finlayson’s Squirrels (Callosciurus finlaysonii) in Italy

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