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首頁(yè)> 外文學(xué)位 >Eco-epidemiologie de la maladie de lyme dans le sud-ouest du Quebec : Etude des facteurs environnementaux associes a son etablissement.
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Eco-epidemiologie de la maladie de lyme dans le sud-ouest du Quebec : Etude des facteurs environnementaux associes a son etablissement.

機(jī)譯：魁北克西南部萊姆病的生態(tài)流行病學(xué)：與建立萊姆病有關(guān)的環(huán)境因素的研究。

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摘要

Since the 90s in Canada, studies have identified new endemic areas for the agent of Lyme disease, Borrelia burgdorferi and the tick vector, Ixodes scapularis. These newly endemic areas for complex I. scapularis - B. burgdorferi are prime areas to study the transmission cycle in its environmental context. The main objective of this project is to study the spirochete-tick-host relationships and environmental factors involved in the transmission cycle from the data of the vector and the pathogen collected in southwestern Quebec, 2007 to 2008.;First, a description of the seasonality of ticks and associations between the vector and captured rodent hosts was performed. The identification of specific seasonality at each stage of the tick I. scapularis establishes months conducive to make the future collections of ticks. Synchronous seasonality of questing immature ticks may also be an indicator of the nature or strain of B. burgdorferi found. In addition, the association of immature ticks in different species or different classes of hosts (i.e. age, sex, reproductive status) was explored. The Peromyscus mice and adult males in particular contributed significantly to the survival and development of complex I. scapularis-B. burgdorferi. Chipmunks and squirrels also contributed to the survival and development of I. scapularis populations.;Second, the associations between vector and examined deer was described taking into account the environmental factors associated with the level of infestation and the use of deer as sentinels for the vector and the pathogen was evaluated. According to our results, the deer are effective sentinels to detect Anaplasma phagocytophilum, but seem ineffective or imprecise to detect endemic areas for complex I. scapularis-B. burgdorferi..;Finally, an analysis of the impact of the host diversity and habitat on the abundance of I. scapularis and prevalence of B. burgdorferi considering other environmental factors was performed. These analyzes were used to determine the critical factors in the establishment of complex I. scapularis-B. burgorferi and explore the relative contribution of various host species. According to our studies, the diversity of the host community and habitat influences the complex I. scapularis-B. burgdorferi. On the other hand, the climate (temperature and precipitation) plays a significant role in the establishment, survival and development of the I. scapularis populations.;This study allowed us to explore and identify various biotic and abiotic environmental factors influencing the establishment of complex I. scapularis-B. burgdorferi in southwestern Quebec. These environmental factors could be used as environmental indicators of the risk of Lyme disease in Quebec and possibly elsewhere in Canada.
機(jī)譯：自從90年代以來(lái)，加拿大的研究已經(jīng)確定了萊姆病病原體伯氏疏螺旋體和壁虱媒介I肩I的新流行區(qū)域。這些復(fù)雜的肩II。burgdorferi新近流行地區(qū)是研究其環(huán)境中傳播周期的主要地區(qū)。該項(xiàng)目的主要目的是從2007年至2008年在魁北克西南部地區(qū)采集的媒介物和病原體的數(shù)據(jù)研究傳播周期中涉及的螺旋體-t虱-宿主關(guān)系和環(huán)境因素。首先，描述季節(jié)性在載體和捕獲的嚙齒動(dòng)物宿主之間進(jìn)行tick和關(guān)聯(lián)的檢測(cè)。在the蟲(chóng)的每個(gè)階段確定特定的季節(jié)性，確定了有助于將來(lái)收集of蟲(chóng)的月份。追尋未成熟s的季節(jié)性同步也可能表明所發(fā)現(xiàn)的伯氏疏螺旋體的性質(zhì)或品系。此外，還探討了不同物種或不同類(lèi)別寄主（即年齡，性別，生殖狀況）中未成熟tick的關(guān)聯(lián)。 Peromyscus小鼠和成年雄性對(duì)復(fù)雜的肩骨I-B??的存活和發(fā)育尤其有重要作用。伯格多菲里?；ɡ跏蠛退墒笠矠榧玺~(yú)種群的生存和發(fā)展做出了貢獻(xiàn)。其次，考慮到與侵染水平相關(guān)的環(huán)境因素以及使用鹿作為媒介的前哨，描述了媒介物與受檢鹿之間的關(guān)聯(lián)。并評(píng)估了病原體。根據(jù)我們的結(jié)果，鹿是檢測(cè)吞噬性無(wú)漿細(xì)胞的有效前哨，但對(duì)于檢測(cè)復(fù)雜的肩I魚(yú)B的流行區(qū)域似乎無(wú)效或不精確。最后，在考慮其他環(huán)境因素的情況下，進(jìn)行了寄主多樣性和棲息地對(duì)肩cap魚(yú)豐度和伯氏疏螺旋體流行的影響的分析。這些分析被用來(lái)確定建立復(fù)雜的肩B骨-B的關(guān)鍵因素。 burgorferi，并探索各種寄主物種的相對(duì)貢獻(xiàn)。根據(jù)我們的研究，寄主社區(qū)和棲息地的多樣性影響復(fù)雜的肩cap魚(yú)B。伯格多菲里。另一方面，氣候（溫度和降水）在肩魚(yú)種群的建立，生存和發(fā)展中起著重要作用。這項(xiàng)研究使我們能夠探索和識(shí)別影響復(fù)合體建立的各種生物和非生物環(huán)境因素。肩cap I.在西南魁北克的burgdorferi。這些環(huán)境因素可以用作魁北克省和加拿大其他地方可能發(fā)生萊姆病風(fēng)險(xiǎn)的環(huán)境指標(biāo)。

著錄項(xiàng)

  • 作者

    Bouchard, Catherine.;

  • 作者單位

    Universite de Montreal (Canada).;

  • 授予單位 Universite de Montreal (Canada).;
  • 學(xué)科 Health Sciences Epidemiology.
  • 學(xué)位 Ph.D.
  • 年度 2014
  • 頁(yè)碼 225 p.
  • 總頁(yè)數(shù) 225
  • 原文格式 PDF
  • 正文語(yǔ)種 eng
  • 中圖分類(lèi) 腫瘤學(xué);
  • 關(guān)鍵詞

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