13 research outputs found

    Full-factor GLMM Output for VK5 <i>An</i>. <i>coluzzii</i>.

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    Effect of egg development (eggs vs no eggs), oocyst number, and their interactions on oocyst size. In this model, egg development and oocyst number were considered as fixed effects whereas parasite isolate, mosquito generation, and mosquito ID were set as random effects. Significant effects are in bold. (XLSX)</p

    Full-factor GLMM Output for <i>An</i>. <i>coluzzii</i>.

    No full text
    Effect of treatment (dsGFP vs dsEcR), oocyst number, egg number, and their interactions on oocyst size. In this model, treatment, oocyst number and egg number were considered as fixed effects whereas parasite isolate and mosquito ID were set as random effects. Significant effects are in bold. (XLSX)</p

    <i>P</i>. <i>falciparum</i> oocyst growth is negatively linked to egg development.

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    (A) In An. coluzzii controls (dsGFP-injected), egg numbers are negatively associated with oocyst size, but this association is lost following dsEcR treatment (GLMM, LRT). (B) In An. gambiae, egg numbers are negatively associated with oocyst size in both control and dsEcR conditions (GLMM, LRT), but (C) this association differentially varies across oocyst density in control and dsEcR females (3-way interaction, treatment*egg#*oocyst#, GLMM, LRT, X21 = 8.57, p = 0.003). Lines across egg numbers and oocyst size graphically represent the model-based analysis that was performed, which used nested individual oocyst measurements. Shading shows 95% confidence interval. N = sample size, or number of mosquitoes. Number of individual oocyst measurements including in analysis were: An. coluzzii controls = 926, An. coluzzii dsEcR = 1003, An. gambiae controls = 669, An. gambiae dsEcR = 760.</p

    Additional infection data for colony mosquitoes and VK5-<i>An</i>. <i>coluzzii</i>.

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    (A) The majority of VK5-An. coluzzii females that were provided a parasite-infected (p1-p6) blood meal, failed to develop any eggs. (B) Oocyst prevalence (P) and intensity for individual infections with VK5-An. coluzzii. (C) Mean oocyst size per VK5-An. coluzzii female for each infection with a different parasite isolate (P#). Mean oocyst sizes are shown for simplicity, but all analyses were done with all individual oocyst measurements nested by mosquito. N = sample size. P# = parasite isolate. (TIF)</p

    Egg development for individual infections.

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    (A-B) The effects of EcR-silencing on egg development across individual infections for (A) An. coluzzii (unpaired t-test and Mann-Whitney) and (B) An. gambiae (unpaired t-test and Mann-Whitney) compared to controls (Cntrl). N = sample size. p# = parasite isolate. (TIF)</p

    Oocyst prevalence and intensity for individual infections.

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    (A-B) The effects of EcR-silencing on the prevalence (Fisher’s Exact) and intensity (unpaired t-test and Mann-Whitney) of oocysts across individual infections for (A) An. coluzzii and (B) An. gambiae, compared to dsGFP-injected (Cntrl) females. P = oocyst prevalence. N = sample size. p# = parasite isolate. (TIF)</p

    Full-factor GLMM Output for <i>An</i>. <i>gambiae</i>.

    No full text
    Effect of treatment (dsGFP vs dsEcR), oocyst number, egg number, and their interactions on oocyst size. In this model, treatment, oocyst number and egg number were considered as fixed effects whereas parasite isolate and mosquito ID were set as random effects. Significant effects are in bold. (XLSX)</p

    <i>An</i>. <i>coluzzii</i> and <i>An</i>. <i>gambiae</i> females were infected with <i>P</i>. <i>falciparum</i> field isolates following <i>EcR</i>-silencing.

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    (A-B)An. coluzzii and An. gambiae females were injected with either dsGFP (Cntrl) or dsEcR and then infected with P. falciparum field isolates originating from six different gametocyte carriers (designated patient, p#). (A) Two batches of An. coluzzii females were infected with parasites from p1, p2, and p3. (B) Three batches of An. gambiae females were infected with parasites from p1, p3, p4, p5, and p6. (C) In An. coluzzii, dsEcR-injections did not reduce cumulative egg development to the level of statistical significance (Mann-Whitney). (D) In An. gambiae, EcR-silencing did result in a significant reduction in cumulative egg numbers compared to controls (unpaired t-test). (E-F) In both species, (E) An. coluzzii and (F) An. gambiae, dsEcR-injections had no effect on cumulative oocyst prevalence (Fisher’s Exact) or intensity (unpaired t-test and Mann-Whitney). P next to pie charts = prevalence. N = sample size. p# = parasite isolate.</p
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