Spacing behaviour of red squirrels, Sciurus vulgaris: variation between habitats and the sexes

Wauters, Luc A.; Dhondt, André A.

doi:10.1016/s0003-3472(05)80225-8

Cited by 153 publications

(210 citation statements)

References 32 publications

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“…Female Mt. Graham red squirrels minimized overlap during all seasons including summer despite an overall increase in summer ranges; thus, intrasexual territoriality was retained throughout the year as observed in Eurasian red squirrels Sciurus vulgaris (Wauters & Dhondt 1992, Wauters et al 2001. These results support a view of social systems as variable within a species in response to environmental factors (Lott 1991).…”

Section: Discussionsupporting

confidence: 62%

Expanded home ranges in a peripheral population: space use by endangered Mt. Graham red squirrels

Koprowski¹,

King²,

Merrick³

2008

Endang. Species. Res.

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Peripheral populations are often of increased conservation value; however, knowledge of the ecological and evolutionary consequences of a peripheral location is poor. Spatial dynamics are often interpreted as strategies to maximize access to fitness-limiting resources. Red squirrels Tamiasciurus hudsonicus are territorial in western portions of their range and exhibit overlapping home ranges in eastern forests. Endangered Mt. Graham red squirrels T. hudsonicus grahamensis represent the southernmost extension of the species. We used radiotelemetry to assess space use and interindividual overlap of endangered Mt. Graham red squirrels. Squirrels maintained nearly exclusive 50% core areas; however, 95% ranges overlapped considerably, especially between males and females. Home ranges increased in summer for both males and females and may be related to sexspecific reproductive strategies. Ranges of Mt. Graham red squirrels in this peripheral population were nearly 10 times the size of red squirrels from other locations. The space use of this limital population suggests that resource availability may be substantially different than in other portions of the range.

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Section: Discussionsupporting

confidence: 62%

Expanded home ranges in a peripheral population: space use by endangered Mt. Graham red squirrels

Koprowski¹,

King²,

Merrick³

2008

Endang. Species. Res.

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“…Thus, the spatial structure and grouping of many rodents vary with season, habitat conditions, and local density of conspecifics (Jannett 1978, Busher et al 1983, Getz and Hofmann 1986, Sachser 1986, Herrera and Macdonald 1987, Madison and McShea 1987, Armitage 1988, Ferron and Quellet 1989, Zwicker 1989, Jeppsson 1990, Wolff and Cicirello 1990, Ylönen 1990, Meier 1992, Taber and Macdonald 1992, Wauters and Dhondt 1992, Perrin et al 1993, Agrell 1995, Salvioni and Lidicker 1995, Travis et al 1995, Getz and McGuire 1997, Jackson 1999. Such variation may hinder future comparative analyses as most comparative techniques assume intraspecific variation in the trait of interest to be negligible (Martins and Hansen 1996).…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

A review of the evolutionary causes of rodent group-living

Ebensperger

2001

Acta Theriol

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Ebensperger L. A. 2001. A review of the evolutionary causes of rodent group-living. Acta Theriologica 46: 115-144.I analyze and summarize the empirical evidence supporting alternative hypotheses posed to explain the evolution of rodent group-living. Eight hypotheses are considered: two rely on net fitness benefits to individuals, five rely on ecological and life-history constraints, and one uses elements of both. I expose the logic behind each hypothesis, identify its key predictions, examine how the available evidence on rodent socioecology supports or rejects its predictions, and identify some priorities for future research. I show that empirical support for most hypotheses is meager due to a lack of relevant studies. Also, empirical support for a particular hypothesis, when it exists, comes from studies of the same species used to formulate the original hypothesis. Two exceptions are the hypothesis that individual rodents live in groups to reduce their predation risk and the hypothesis that group-living was adopted by individuals to reduce their cost of thermoregulation. Finally, most hypotheses have been examined without regard to competing hypotheses and often in a restricted taxonomic context. This is clearly an unfortunate situation given that most competing hypotheses are not mutually exclusive. I suggest that in the future comparative approaches should be used. These studies should examine simultaneously the relevance of different benefits and constraints hypothesized to explain the evolution of rodent sociality.

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“…El peso corporal de los adultos puede ser usado como indicador de la calidad del hábitat. Wauters y Dhondt (1989) utilizando ardillas rojas sugieren que el peso corporal tiene una relación positiva en cuanto a la dominancia, éxito reproductivo y sobrevivencia (especialmente durante el período de hibernación), así como puede variar dependiendo de las estaciones del año y al alimento (Wauters y Dhondt 1989, 1992. El objetivo de este trabajo fue conocer el estado actual que presentan las poblaciones de X. perotensis, en tres sitios del Valle de Perote, para lo cual se analizó su densidad y estructura poblacional a lo largo de un año de muestreo.…”

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Análisis demográfico de una especie en estado crítico de conservación: la ardilla de Perote

Montero-Bagatella

González‐Romero

2014

Therya

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Spacing behaviour of red squirrels, Sciurus vulgaris: variation between habitats and the sexes

Cited by 153 publications

References 32 publications

Expanded home ranges in a peripheral population: space use by endangered Mt. Graham red squirrels

Expanded home ranges in a peripheral population: space use by endangered Mt. Graham red squirrels

A review of the evolutionary causes of rodent group-living

Análisis demográfico de una especie en estado crítico de conservación: la ardilla de Perote

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