An Analysis of Dispersal in an Unmanipulated Population of Peromyscus leucopus

Krohne, David T.; Dubbs, Bradley A.; Baccus, Ramone

doi:10.2307/2425468

Cited by 58 publications

(34 citation statements)

References 26 publications

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“…In a dispersal study of an unmanipulated population of white-footed mice, Krohne et al (1984) found that males disperse more than females, while Root et al (1999) recorded similar results of adult male deer mice moving greater distances than females and, at 1 of their 2 trap locations, subadult males moving greater distances than adult females. In contrast, Metzgar's (1979) ratios for dispersing adult males to females were nearly equal (0.9:1.0).…”

Section: Discussionmentioning

confidence: 89%

“…Our definition of dispersal is based partly on a study of an unmanipulated population of white-footed mice (Peromyscus leucopus), which defines dispersers as mice that moved a minimum of 75 m (approximately one home range diameter) (Stickel 1968;Krohne et al 1984). Additionally, animals had to demonstrate continuous directional movement, Ն75 m from capture to capture, regardless of the time frame.…”

Section: Methodsmentioning

confidence: 99%

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Seroprevalence Against Sin Nombre Virus in Resident and Dispersing Deer Mice

Lonner

Douglass

Kuenzi

et al. 2008

Vector-Borne and Zoonotic Diseases

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Through dispersal, deer mice (Peromyscus maniculatus) enter peridomestic settings (e.g., outbuildings, barns, cabins) and expose humans and other deer mouse populations to Sin Nombre virus (SNV). In June 2004, research on deer mouse dispersal was initiated at 2 locations in Montana. During the course of the study, over 6000 deer mouse movements were recorded, and more than 1000 of these movements were classified as dispersal movements. More than 1700 individual deer mice were captured and tested for SNV, revealing an average SNV antibody prevalence of approximately 11%. Most of the dispersing and antibody-positive individuals were adult males. Among the few subadult dispersing mice discovered during the study, none were seropositive for SNV. Our results suggest that dispersal rates are higher in high abundance populations of deer mice and that during peak times of dispersal, human exposure to SNV, which commonly occurs in peridomestic settings, could increase.

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Section: Discussionmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Seroprevalence Against Sin Nombre Virus in Resident and Dispersing Deer Mice

Lonner

Douglass

Kuenzi

et al. 2008

Vector-Borne and Zoonotic Diseases

View full text Add to dashboard Cite

show abstract

“…All patches are assumed to be equal in size, appeal, and viability. Since dispersal has been found to be density-independent (Krohne et al 1984;Krohne and Miner 1985), patch size is not a contributing factor to the dynamics of the model, although in reality it may contribute to the carrying capacity of a population through resource availability (Fahrig and Merriam 1985). Pairs of patches are designated as unconnected, connected by high quality corridors, or connected by low quality corridors.…”

Section: A) Model Parametersmentioning

confidence: 99%

“…We have used the work of Krohne et al (1984) to calculate three dispersal rates based on age and season (Table 1). Juveniles had low dispersal in the spring (weeks 1 -13) and high dispersal in autumn (weeks 27-33), with moderate dispersal in between.…”

Section: A) Model Parametersmentioning

confidence: 99%

The elements of connectivity where corridor quality is variable

1990

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Small mammals in heterogeneous environments have been found to disperse along corridors connecting habitat patches. Corridors may have different survivability values depending on their size and the degree of cover they provide. This deterministic model tests the effects of varying corridor quality on the demographics of a metapopulation of Peromyscus leucopus. Two types of corridors are defined based on the probability of survival during a dispersal event.Results indicate that mortality during movement through corridors influences metapopulation demographics. We found that:1. Any connection between two isolated patches is better than no connection at all in terms of persistence and population size at equilibrium. 2. Metapopulations with exclusively high quality corridors between patches have a larger population size at equilibrium than do those with one or more tow quality corridors. 3. Increasing the number of high quality corridors between patches has a positive effect on the size of the metapopulation while increasing the number of low quality corridors has a negative effect. 4. The addition to a metapopulation of a patch connected by low quality corridors has a negative effect on the metapopulation size. This suggest the need for caution in planning corridors in a managed landscape. 5. There is no relationship between the number of corridors and the metapopulation size at equilibrium when the number of connected patches is held constant. 6. Geometrically isolated patches connected by low quality corridors are most vulnerable to local extinctions.We conclude that corridor quality is an important element of connectivity. It contributes substantially to the effects of fragmentation and should be carefully considered by landscape planners.

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“…grassy field Spermophilus beechyi, Dobson 1981 art. savanna Microtus pennsylvanicus, Baird Krohne et al 1984 art. Tamarin et al 1984 art.…”

Section: Distance Traveled By Dispersers Through the Sinkmentioning

confidence: 99%

Are small-scale landscape features important factors for field studies of small mammal dispersal sinks?

Buechner

1989

Landscape Ecol

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Interest in the influence of landscape features on animal movement has been widespread; however, few field studies of the emigration of small mammals from patches of habitat directly consider the effects of the smallscale landscape features. The simulation models of Stamps et al. (1987a, b) and Buechner (1987a, b) suggest that the size of a dispersal sink relative to the size of the source patch, the average distance traveled by dispersers in the sink, the ease with which dispersers cross the edge between the sink and a source patch, and source patch perimeter:area ratio may all be important influences on emigration rates. A review of field studies of small mammal dispersal into sinks suggests that in a substantial fraction of such studies the values of these factors fall within the ranges that the simulation models indicate have the greatest potential effect on emigration rates. New field studies of dispersal sinks that include a consideration of these factors are necessary in order to evaluate the magnitude of the impact of these factors on natural populations.

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An Analysis of Dispersal in an Unmanipulated Population of Peromyscus leucopus

Cited by 58 publications

References 26 publications

Seroprevalence Against Sin Nombre Virus in Resident and Dispersing Deer Mice

Seroprevalence Against Sin Nombre Virus in Resident and Dispersing Deer Mice

The elements of connectivity where corridor quality is variable

Are small-scale landscape features important factors for field studies of small mammal dispersal sinks?

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