Landscape Structure and Plague Occurrence in Black-tailed Prairie Dogs on Grasslands of the Western USA

Collinge, Sharon K.; Johnson, Whitney C.; Ray, Chris; Matchett, Randy; Grensten, John; Cully, Jack F.; Gage, Kenneth L.; Kosoy, Michael; Loye, Jenella E.; Martin, Andrew P.

doi:10.1007/s10980-005-4617-5

Cited by 96 publications

(121 citation statements)

References 27 publications

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“…Within years, however, significant differences in bacterial communities across prairie dog colonies are notable. Together, the temporal and spatial effects on bacterial community assembly in fleas parallel the temporal and spatial variation observed in Y. pestis and B. washoensis infection of prairie dogs (Collinge et al, 2005;Augustine et al, 2008;Bai et al, 2008). The overall lack of differentiation of bacterial communities between flea species suggests that O. hirsuta and O. t. cynomuris do not represent unique niches.…”

Section: Discussionmentioning

confidence: 66%

“…Seasonal shifts in microbial communities have been observed in soil and marine communities (Pinhassi and Hagstrom, 2000;Riemann et al, 2000;Schadt et al, 2003;Lipson and Schmidt, 2004;Bjork et al, 2008), due in large part to changing environmental conditions. Similarly, epidemics of arthropod-vectored pathogenic lineages correlate with environmental parameters (Collinge et al, 2005;Augustine et al, 2008), suggesting that environmental conditions may affect the ability of at least some community members to persist.…”

Section: Introductionmentioning

confidence: 99%

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Bacterial communities of disease vectors sampled across time, space, and species

2009

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A common strategy of pathogenic bacteria is to form close associations with parasitic insects that feed on animals and to use these insects as vectors for their own transmission. Pathogens interact closely with other coexisting bacteria within the insect, and interactions between co-occurring bacteria may influence the vector competency of the parasite. Interactions between particular lineages can be explored through measures of a-diversity. Furthermore, general patterns of bacterial community assembly can be explored through measures of b-diversity. Here, we use pyrosequencing (n ¼ 115 924 16S rRNA gene sequences) to describe the bacterial communities of 230 prairie dog fleas sampled across space and time. We use these communinty characterizations to assess interactions between dominant community members and to explore general patterns of bacterial community assembly in fleas. An analysis of co-occurrence patterns suggests non-neutral negative interactions between dominant community members (Po0.001). Furthermore, bacterial communities of fleas shift dramatically across years (phylotype-based: R ¼ 0.829, Po0.001; phylogeneticbased: R ¼ 0.612-0.753, Po0.001), but they also significantly differ across space (phylotype-based: R ¼ 0.418, Po0.001; phylogenetic-based: R ¼ 0.290-0.328, Po0.001) and between flea species (phylotype-based: R ¼ 0.160, P ¼ 0.011; phylogenetic-based: not significant). Collectively, our results show that flea-associated bacterial communities are not random assemblages; rather, an individual flea's bacterial community is governed by interactions between bacterial lineages and by the flea's place in space and time.

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Section: Discussionmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Bacterial communities of disease vectors sampled across time, space, and species

2009

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“…Our results indicated that eight metrics were significantly different between BU case villages and reference villages at the distance of 4 km, four metrics were significantly different at the distance of 2 km, while none were significantly different at the distance of 1 km, suggesting the importance of landscape heterogeneity and context at broader spatial extents, consistent with the result from a previous study. 29 Collectively, the MANOVA suggested results were different at 4 and 2 km but not significant at 1 km. Both mean and standard deviation of landscape metrics declined with increasing radii, indicating that the difference was not caused by changes in variance with scale (Supplemental Table 3).…”

Section: Discussionmentioning

confidence: 90%

Landscape Fragmentation as a Risk Factor for Buruli Ulcer Disease in Ghana

Smithwick

2016

The American Society of Tropical Medicine and Hygiene

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Abstract. Land cover and its change have been linked to Buruli ulcer (BU), a rapidly emerging tropical disease. However, it is unknown whether landscape structure affects the disease prevalence. To examine the association between landscape pattern and BU presence, we obtained land cover information for 20 villages in southwestern Ghana from high resolution satellite images, and analyzed the landscape pattern surrounding each village. Eight landscape metrics indicated that landscape patterns between BU case and reference villages were different (P < 0.05) at the broad spatial extent examined (4 km). The logistic regression models showed that landscape fragmentation and diversity indices were positively associated with BU presence in a village. Specifically, for each increase in patch density and edge density by 100 units, the likelihood of BU presence in a village increased 2.51 (95% confidence interval [CI] = 1.36-4.61) and 4.18 (95% CI = 1.63-10.76) times, respectively. The results suggest that increased landscape fragmentation may pose a risk to the emergence of BU.

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“…Community interactions and host and vector population fluctuations no doubt influence host organisms, 45,46 and therefore likely mediate plague cycles at local scales. 21,47 Studies to date linking plague occurrences to environmental correlates 21,22,[47][48][49][50][51] focused in large part on host dynamics during epizootics, limiting the possibility of characterization of areas of enzootic plague transmission.…”

Section: Discussionmentioning

confidence: 99%

“…and other social sciurids that live in colonies and exhibit local extinction on exposure to the bacterium. 6,[20][21][22][23][24][25][26] Additional potential rodent hosts are known, and plague has been proposed to be enzootic in some, although the role of deer mice ( Peromyscus spp.) as enzootic hosts was challenged recently.…”

Section: Introductionmentioning

confidence: 99%

Range-wide Determinants of Plague Distribution in North America

Maher

Ellis²,

Gage³

et al. 2010

The American Society of Tropical Medicine and Hygiene

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Abstract. Plague, caused by the bacterium Yersinia pestis , is established across western North America, and yet little is known of what determines the broad-scale dimensions of its overall range. We tested whether its North American distribution represents a composite of individual host-plague associations (the "Host Niche Hypothesis"), or whether mammal hosts become infected only at sites overlapping ecological conditions appropriate for plague transmission and maintenance (the "Plague Niche Hypothesis"). We took advantage of a novel data set summarizing plague records in wild mammals newly digitized from paper-based records at the Centers for Disease Control and Prevention to develop range-wide tests of ecological niche similarity between mammal host niches and plague-infected host niches. Results indicate that plague infections occur under circumstances distinct from the broader ecological distribution of hosts, and that plagueinfected niches are similar among hosts; hence, evidence coincides with the predictions of the Plague Niche Hypothesis, and contrasts with those of the Host Niche Hypothesis. The "plague niche" is likely driven by ecological requirements of vector flea species.

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Landscape Structure and Plague Occurrence in Black-tailed Prairie Dogs on Grasslands of the Western USA

Cited by 96 publications

References 27 publications

Bacterial communities of disease vectors sampled across time, space, and species

Bacterial communities of disease vectors sampled across time, space, and species

Landscape Fragmentation as a Risk Factor for Buruli Ulcer Disease in Ghana

Range-wide Determinants of Plague Distribution in North America

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