Population analyses of Amblyomma maculatum ticks and Rickettsia parkeri using single-strand conformation polymorphism

Ferrari, F.A.G.; Goddard, Jerome; Caprio, Michael A.; Paddock, Christopher D.; Mixson‐Hayden, Tonya; Varela‐Stokes, Andrea S.

doi:10.1016/j.ttbdis.2013.04.010

Cited by 6 publications

(7 citation statements)

References 32 publications

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“…A robust test of this possibility will require markers with a faster mutation rate, such as microsatellites. (Hilburn and Sattler, 1986b;Mixson et al, 2006;Reichard et al, 2005;Trout et al, 2010), Amblyomma dissimile (Lampo et al, 1998), Amblyomma dubitatum , Amblyomma maculatum (Ferrari et al, 2013;Ketchum et al, 2009), Amblyomma triste (Guglielmone et al, 2013), and Amblyomma variegatum (Beati et al, 2012). In general these studies indicate that Amblyomma ticks exhibit low genetic variation and high levels of gene flow.…”

Section: Rhipicephalus Microplusmentioning

confidence: 69%

Thirty years of tick population genetics: A comprehensive review

Araya-Anchetta

Busch

Scoles

et al. 2015

Infection, Genetics and Evolution

110

109

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Population genetic studies provide insights into the basic biology of arthropod disease vectors by estimating dispersal patterns and their potential to spread pathogens. In wingless vectors, such as ticks, gene flow will be defined in large part by the mobility of their hosts. However, tick behaviors and life cycle strategies can limit their dispersal even on highly mobile hosts and lead to an increase in genetic structure. In this review we synthesize the published literature from three decades of tick population genetic studies. Based on studies from 22 tick species (including representatives from Amblyomma, Bothriocroton, Dermacentor, Ixodes, Ornithodoros, and Rhipicephalus), observed levels of population genetic structure in ticks varied from no structure to very high levels. In about half of the species (including representatives from Amblyomma, Bothriocroton, Dermacentor, and Ornithodoros), tick genetic structure appeared to be determined primarily by the movement capacity of hosts, with low gene flow observed in ticks that use smaller bodied less mobile hosts and high gene flow in ticks using highly mobile hosts. In a number of other species (primarily from Ixodes, Ornithodoros, and Rhipicephalus), behavioral limitations to gene flow appeared to result in greater genetic structure than expected based upon host movement capability alone. We also discuss the strengths and limitations of genetic markers and their applicability to ticks and suggest possible analyses when planning population genetic studies for ticks.

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Section: Rhipicephalus Microplusmentioning

confidence: 69%

Thirty years of tick population genetics: A comprehensive review

Araya-Anchetta

Busch

Scoles

et al. 2015

Infection, Genetics and Evolution

110

109

View full text Add to dashboard Cite

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“…Only sites with very few individuals sampled, all from Mississippi, exhibited evidence of significant gene flow among populations (Table 2), which may be a statistical artifact of small sample size. Previous studies of A. maculatum populations have shown polyphyletic haplotypes and implicated multiple introductions in the genetic diversity observed (Ferrari et al 2013, Ketchum et al 2009). Ferrari et al (2013) have suggested that observed A. maculatum inter-population gene flow could be facilitated by long-distance anthropogenic movements of cattle or by migratory birds.…”

Section: Discussionmentioning

confidence: 88%

“…We identified 36 unique haplotypes that were not heteroplasmic (Genbank accession numbers TBD), several of which had been partially sequenced by other researchers (Black and Piesman 1994, Ketchum et al 2009, Ferrari et al 2013). To construct our phylogenic trees, we used only our complete 416 bp sequences, thus conserving all variable sites within our analyses (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Comparative population genetics of two invading ticks: Evidence of the ecological mechanisms underlying tick range expansions

Nadolny

Gaff

Carlsson

et al. 2015

Infection, Genetics and Evolution

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Two species of ixodid tick, Ixodes affinis Neumann and Amblyomma maculatum Koch, are simultaneously expanding their ranges throughout the mid-Atlantic region of the US. Although we have some understanding of the ecology and life history of these species, the ecological mechanisms governing where and how new populations establish and persist are unclear. To assess population connectivity and ancestry, we sequenced a fragment of the 16S mitochondrial rRNA gene from a representative sample of individuals of both species from populations throughout the eastern US. We found that despite overlapping host preferences throughout ontogeny, each species exhibited very different genetic and geographic patterns of population establishment and connectivity. Ixodes affinis was of two distinct mitochondrial clades, with a clear geographic break separating northern and southern populations. Both I. affinis populations showed evidence of recent expansion, although the southern population was more genetically diverse, indicating a longer history of establishment. Amblyomma maculatum exhibited diverse haplotypes that showed no significant relationship with geographic patterns and little apparent connectivity between sites. Heteroplasmy was also observed in the 16S mitochondrial rRNA gene in 3.5% of A. maculatum individuals. Genetic evidence suggests that these species rely on different key life stages to successfully disperse into novel environments, and that host vagility, habitat stability and habitat connectivity all play critical roles in the establishment of new tick populations.

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“…Remarkably, several studies have reported little genetic variability and high levels of gene flow among expanding populations of A. maculatum [ 29 ]. Ferrari et al [ 30 ] suggested expansion of this tick along a migrating front rather than as long-standing sporadic, isolated populations. Nadolny et al [ 31 ] used genetic analysis to track the ancestry of newly established populations.…”

Section: Selected North American Ticks and Range Expansionmentioning

confidence: 99%

Range Expansion of Tick Disease Vectors in North America: Implications for Spread of Tick-Borne Disease

Sonenshine

2018

IJERPH

342

261

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Ticks are the major vectors of most disease-causing agents to humans, companion animals and wildlife. Moreover, ticks transmit a greater variety of pathogenic agents than any other blood-feeding arthropod. Ticks have been expanding their geographic ranges in recent decades largely due to climate change. Furthermore, tick populations in many areas of their past and even newly established localities have increased in abundance. These dynamic changes present new and increasing severe public health threats to humans, livestock and companion animals in areas where they were previously unknown or were considered to be of minor importance. Here in this review, the geographic status of four representative tick species are discussed in relation to these public health concerns, namely, the American dog tick, Dermacentor variabilis, the lone star tick, Amblyomma americanum, the Gulf Coast Tick, Amblyomma maculatum and the black-legged tick, Ixodes scapularis. Both biotic and abiotic factors that may influence future range expansion and successful colony formation in new habitats are discussed.

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Population analyses of Amblyomma maculatum ticks and Rickettsia parkeri using single-strand conformation polymorphism

Cited by 6 publications

References 32 publications

Thirty years of tick population genetics: A comprehensive review

Thirty years of tick population genetics: A comprehensive review

Comparative population genetics of two invading ticks: Evidence of the ecological mechanisms underlying tick range expansions

Range Expansion of Tick Disease Vectors in North America: Implications for Spread of Tick-Borne Disease

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