Functional connectivity of the white-footed mouse in Southern Quebec, Canada

Marrotte, Robby R.; Gonzalez, Andrew; Millien, Virginie

doi:10.1007/s10980-017-0559-y

Cited by 12 publications

(13 citation statements)

References 76 publications

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“…R I/E > 1 would indicate that the rate of immigration in a population is higher than the emigration rate and vice versa for R I/E < 1. Finally, we note that the results of the divMigrate analysis do not necessarily represent actual migration but rather estimate the probability of the exchange of genes between two sampling locations (Marrotte et al 2017;Bohling et al 2019). Further, relative migration rates are estimated across all pairs of included populations and do not account for spatial context or distance between them.…”

Section: Estimating Directional Migration Ratesmentioning

confidence: 99%

Genetic analysis of red deer (Cervus elaphus) administrative management units in a human-dominated landscape

et al. 2020

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Red deer (Cervus elaphus) throughout central Europe are influenced by different anthropogenic activities including habitat fragmentation, selective hunting and translocations. This has substantial impacts on genetic diversity and the long-term conservation of local populations of this species. Here we use genetic samples from 480 red deer individuals to assess genetic diversity and differentiation of the 12 administrative management units located in Schleswig Holstein, the northernmost federal state in Germany. We applied multiple analytical approaches and show that the history of local populations (i.e., translocations, culling of individuals outside of designated red deer zones, anthropogenic infrastructures) potentially has led to low levels of genetic diversity. Mean expected heterozygosity was below 0.6 and we observed on average 4.2 alleles across 12 microsatellite loci. Effective population sizes below the recommended level of 50 were estimated for multiple local populations. Our estimates of genetic structure and gene flow show that red deer in northern Germany are best described as a complex network of asymmetrically connected subpopulations, with high genetic exchange among some local populations and reduced connectivity of others. Genetic diversity was also correlated with population densities of neighboring management units. Based on these findings, we suggest that connectivity among existing management units should be considered in the practical management of the species, which means that some administrative management units should be managed together, while the effective isolation of other units needs to be mitigated.

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Section: Estimating Directional Migration Ratesmentioning

confidence: 99%

Genetic analysis of red deer (Cervus elaphus) administrative management units in a human-dominated landscape

et al. 2020

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“…Most studies consider connectivity as an individual-level process or as a structural feature of landscapes (see review in Wade, McKelvey & Schwartz, 2015). The outcome of connectivity for small mammals may better be conceptualized as occurring over multiple generations of successful dispersers (Marrotte et al, 2017). Although tree voles are occasionally observed in young forests (Forsman et al, 2016;Linnell et al, 2017) no empirical evidence of gene flow occurring through matrix for the species currently exists.…”

Section: Discussionmentioning

confidence: 99%

“…Although multi‐generation connectivity via gene flow has rarely been empirically tested for small mammals, a model of gene flow for a generalist mouse species Peromyscus leucopus suggested that several generations of successful dispersal of at least 80 m facilitated gene flow (Marrotte, Gonzalez & Millien, ). Given limited information about dispersal and settlement by tree voles, a plausible first step in assessing connectivity may be to assume a similar scenario: that multiple successive dispersal events facilitate connectivity.…”

Section: Methodsmentioning

confidence: 99%

Landscape connectivity and conservation prioritization for an old forest species with limited vagility

Linnell

Lesmeister

2019

Animal Conservation

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Old forests are often patchily distributed in contemporary forested landscapes leading to conservation concerns for species dependent on these forest types. In the absence of broad‐scale recovery of old forests, conservation initiatives have emphasized connecting forested landscapes to facilitate movement of genes or individuals. We assessed forest connectivity for a low‐vagile arboreal rodent (red tree vole; Arborimus longicaudus), an obligate of old forests within a distinct population segment that is a candidate for listing under the US Endangered Species Act in the northern Oregon Coast Range (USA). Within the distinct population segment, old forests (>80 years old) have contracted by >80% in the previous century, comprise 10.9% of the contemporary landscape and reside in a matrix of young forests (20–80 years old). We combined complimentary graph and circuit theory metrics into spatial conservation prioritization to provide insights into the composition and function of the contemporary forested landscape and to identify potential conservation and research priorities for this area. Given average distances from patches of old forests (3.4 km), we predicted that connectivity can only be achieved if red tree voles move and settle iteratively through young forest matrix, which is suboptimal habitat. We found that the top 1% conservation priorities were a series of small, spatially central patches and several large patches located where old forest cover was most extensive. Most of these patches were in protected reserves. Up to 30% of the top 10% prioritization were forests outside of reserves, highlighting the potential for these forests to contribute to landscape connectivity for this low‐vagile species that is dependent on old forest.

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“…This fragmentation decreases mammalian and plant biodiversity, while increasing the density of tick reservoirs [ 26 , 27 , 28 , 29 ]. The white-footed mouse is a species highly influenced by these changes and tends to cluster in transitional zones, spreading rapidly in southern Québec where high-density populations are found in these fragmented regions [ 26 , 28 , 30 , 31 ]. The risk of human exposure to ticks in these types of areas is greater, both in terms of the dispersion of its reservoirs but by also through more frequent contact related to recreational or professional human activities [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling Spatiotemporal Patterns of Lyme Disease Emergence in Québec

Tutt-Guérette¹,

Yuan²,

Szaroz

et al. 2021

IJERPH

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Lyme disease is a growing public health problem in Québec. Its emergence over the last decade is caused by environmental and anthropological factors that favour the survival of Ixodes scapularis, the vector of Lyme disease transmission. The objective of this study was to estimate the speed and direction of human Lyme disease emergence in Québec and to identify spatiotemporal risk patterns. A surface trend analysis was conducted to estimate the speed and direction of its emergence based upon the first detected case of Lyme disease in each municipality in Québec since 2004. A cluster analysis was also conducted to identify at-risk regions across space and time. These analyses were reproduced for the date of disease onset and date of notification for each case of Lyme disease. It was estimated that Lyme disease is spreading northward in Québec at a speed varying between 18 and 32 km/year according to the date of notification and the date of disease onset, respectively. A significantly high risk of disease was found in seven clusters identified in the south-west of Québec in the sociosanitary regions of Montérégie and Estrie. The results obtained in this study improve our understanding of the spatiotemporal patterns of Lyme disease in Québec, which can be used for proactive, targeted interventions by public and clinical health authorities.

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Functional connectivity of the white-footed mouse in Southern Quebec, Canada

Cited by 12 publications

References 76 publications

Genetic analysis of red deer (Cervus elaphus) administrative management units in a human-dominated landscape

Genetic analysis of red deer (Cervus elaphus) administrative management units in a human-dominated landscape

Landscape connectivity and conservation prioritization for an old forest species with limited vagility

Modelling Spatiotemporal Patterns of Lyme Disease Emergence in Québec

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