Population genetic structure and natal philopatry in the widespread North American bat<i>Myotis lucifugus</i>

Dixon, Michael D.

doi:10.1644/10-mamm-a-426.1

Cited by 38 publications

(33 citation statements)

References 46 publications

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“…Our ABC results confirmed a population decline as the most likely historical scenario. Two previous studies found signals of demographic expansion in M. lucifugus in eastern Canada [22] and Minnesota, United States [46]. A small potential increase in C. adjunctus effective population size indicated in the EBSP starting 30,000 years ago is in a similar timeframe as, but is of much smaller amplitude than, the demographic expansion found in both M. lucifugus studies.…”

Section: Discussionsupporting

confidence: 48%

Range-wide genetic structure and demographic history in the bat ectoparasite Cimex adjunctus

et al. 2016

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BackgroundEvolutionary histories of parasite and host populations are intimately linked such that their spatial genetic structures may be correlated. While these processes have been relatively well studied in specialist parasites and their hosts, less is known about the ecological and evolutionary consequences of relationships between generalist ectoparasites and their hosts. The aim of this study was to investigate the genetic structure and demographic history of a bat ectoparasite, Cimex adjunctus, whose host affinity is weak but the biology of the potential hosts have been well studied. This ectoparasite has been hypothesized to rely on its hosts for dispersal due to its low inherent dispersal potential. Here we describe genetic diversity and demographic history in C. adjunctus through most of its range in North America. We investigated variation at the cytochrome c oxidase 1 mitochondrial gene and nine microsatellite markers, and tested the prediction that genetic diversity in C. adjunctus is spatially structured. We also tested the prediction that demographic history in C. adjunctus is characterized by range and demographic expansion as a consequence of post-Pleistocene climate warming.ResultsWe found stronger spatial structuring of genetic diversity in C. adjunctus than has been quantified in two of its hosts, but contrast in amount of variation explained by host association with different genetic markers (i.e., nuclear vs mitochondrial DNA). Also, C. adjunctus’ history is not primarily characterized by demographic and range expansion, as is the case with two of its key hosts.ConclusionsOur study shows different patterns of genetic structure and demographic history in C. adjunctus than have been detected in two of its key hosts. Our results suggest an effect of a loose parasite-host relationship and anti-parasitism strategies on genetic structure and post-Pleistocene recovery of population size.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-016-0839-1) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 48%

Range-wide genetic structure and demographic history in the bat ectoparasite Cimex adjunctus

et al. 2016

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“…The variation in levels of differentiation between these marker types suggest that the observed patterns of structuring may largely result from female philopatry. These findings are consistent with previous studies showing female philopatry of M. lucifugus to summering sites (Dixon 2011a;Norquay et al 2013). However, levels of mitochondrial differentiation were still fairly low, indicating that it either is unlikely that all females exhibit philopatry, and that there may be substantial movement of females, or that some colonies were established recently and not enough time has passed for the development of genetic differentiation.…”

Section: Discussionsupporting

confidence: 93%

“…Here we identified nDNA and mtDNA F ST values that were an order of magnitude higher (Burns et al 2014; nDNA F ST = 0.001, mtDNA ⌽ ST = 0.045) and identified patterns of IBD; neither Burns et al (2014) nor Miller-Butterworth et al (2014 found patterns of IBD. Although these studies and others (Lausen et al 2008;Dixon 2011aDixon , 2011b show evidence for high levels of gene flow across the range of M. lucifugus, landscape features and likely aspects of behaviour are impacting gene flow in ways that are genetically detectable and that negate full panmixia. For example, in western North America, Lausen et al (2008) found patterns of IBD in M. lucifugus within a prairie landscape along river routes and Miller-Butterworth et al (2014) attributed detectable genetic population structuring with mountain ranges.…”

Section: Discussionmentioning

confidence: 73%

“…1). Although extensively studied, only recently has DNA analysis been used to directly examine patterns of population structure throughout its range (Lausen et al 2008;Dixon 2011aDixon , 2011bMiller-Butterworth et al 2014;Burns et al 2014;Johnson et al 2015). Collectively, these studies suggest a general pattern of minimal structuring of nuclear genetic markers over distances in excess of 850 km and some mitochondrial DNA (mtDNA) structuring among summer maternity roosts, which is indicative of females exhibiting some degree of philopatry.…”

Section: Introductionmentioning

confidence: 99%

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Effect of oceanic straits on gene flow in the recently endangered little brown bat (Myotis lucifugus) in maritime Canada: implications for the spread of white-nose syndrome

et al. 2015

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White-nose syndrome is rapidly spreading in eastern North America, causing mass mortality of hibernating bats. We characterized levels of genetic diversity and population structure of the little brown bat (Myotis lucifugus (Le Conte, 1831)) in eastern Canada to infer the extent to which oceanic straits may be barriers to movement. To quantify metrics of gene flow and infer movement dynamics, we genotyped 679 M. lucifugus at nine nuclear microsatellites (nDNA) and sequenced a portion of the mitochondrial DNA (mtDNA). We found high levels of genetic diversity and little population structure, with ≈13-fold higher differentiation of mtDNA than nDNA markers, suggesting that structuring patterns largely result from female philopatry. Discriminant analysis of principle components suggested that the subtle underlying structure was not concordant with sampling site. Regional differentiation (F ST , D est , Mantel test residuals) is mostly consistent with genetic isolation by distance. However, samples from Newfoundland showed genetic differentiation over and above the effects of distance, lower levels of genetic diversity, and less genetic connectivity with other sampled regions. Despite this, oceanic straits in the Gulf of Saint Lawrence do not appear to create an impenetrable barrier to movement, therefore it may be possible for white-nose syndrome to spread to Newfoundland.Résumé : Le syndrome du museau blanc se propage rapidement dans l'est de l'Amérique du Nord, entraînant une mortalité massive des chauves-souris hibernantes. Nous avons caractérisé les degrés de diversité génétique et la structure de la population du vespertilion brun (Myotis lucifugus (Le Conte, 1831)) dans l'est du Canada afin d'inférer la mesure dans laquelle les détroits océaniques pourraient constituer des barrières aux déplacements. Pour quantifier le flux génétique et inférer la dynamique des déplacements, nous avons effectué le génotypage de 679 M. lucifugus en neuf microsatellites nucléaires (ADNn) et le séquençage d'une portion d'ADN mitochondrial (ADNmt). Nous avons observé des degrés élevés de diversité génétique et peu de structure de la population, les marqueurs d'ADNmt présentant une différentiation ≈13 fois supérieure à celle des marqueurs d'ADNn, ce qui donne à penser que les motifs de structuration découlent en bonne partie de la philopatrie des femelles. L'analyse discriminante des composantes principales suggère que la subtile structure sous-jacente n'est pas reliée au lieu d'échantillonnage. La différentiation régionale (F ST , D est , résidus du test de Mantel) refléterait principalement un isolement génétique par la distance. Toutefois, des échantillons provenant de Terre-Neuve présentaient une différentiation génétique allant au-delà des seuls effets de la distance, des degrés de diversité génétique plus faibles et moins de connectivité génétique avec les autres régions échantillonnées. Les détroits océaniques dans le golfe du Saint-Laurent ne semblent néanmoins pas constituer une barrière impénétrable aux déplacements, de sor...

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“…Variation in interannual survival and recruitment among maternity colonies may signify potential behavioral, environmental, and/or inherited physiological factors relevant to surviving infection with WNS. Because female Little Brown Myotis exhibit high fidelity to natal roosts (Dixon 2011, Humphrey and Cope 1976), maternally heritable factors (e.g., immunocompetence, metabolism) that could contribute to a bat’s ability to survive WNS may be traceable to certain summer roosts and have the potential to perpetuate in persisting populations. Environmental and social variables during postnatal development can also influence many aspects of the lives of neonates, such as their symbiotic microbial fauna (Altizer et al 2003), migratory behavior (Fleming and Eby 2003), exposure to contaminants (Bayat et al 2014, Yates et al 2013), availability of prey (Clare et al 2011), and exposure to pathogens, potentially including P. destructans .…”

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confidence: 99%

Interannual Survival ofMyotis lucifugus(Chiroptera: Vespertilionidae) near the Epicenter of White-Nose Syndrome

Reichard

Fuller

Bennett

et al. 2014

Northeastern Naturalist

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Population genetic structure and natal philopatry in the widespread North American batMyotis lucifugus

Cited by 38 publications

References 46 publications

Range-wide genetic structure and demographic history in the bat ectoparasite Cimex adjunctus

Range-wide genetic structure and demographic history in the bat ectoparasite Cimex adjunctus

Effect of oceanic straits on gene flow in the recently endangered little brown bat (Myotis lucifugus) in maritime Canada: implications for the spread of white-nose syndrome

Interannual Survival ofMyotis lucifugus(Chiroptera: Vespertilionidae) near the Epicenter of White-Nose Syndrome

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