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首页> 外文期刊>The Journal of Experimental Biology >Distinct physiological, biochemical and morphometric adjustments in the malaria vectors Anopheles gambiae and A. coluzzii as means to survive dry season conditions in Burkina Faso
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Distinct physiological, biochemical and morphometric adjustments in the malaria vectors Anopheles gambiae and A. coluzzii as means to survive dry season conditions in Burkina Faso

机译:疟疾普通和A.Coluzzii的不同生理,生物化学和形态学调整,作为Burkina Faso的干燥季节条件的手段

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摘要

Aestivation and dispersive migration are the two strategies evoked in the literature to explain the way in which malaria vectors Anopheles coluzzii and A. gambiae survive the harsh climatic conditions of the dry season in sub-Saharan Africa. However, the physiological mechanisms regulating these two strategies are unknown. In the present study, mosquito species were exposed to controlled environmental conditions mimicking the rainy and dry seasons of south western Burkina Faso. Survival strategies were studied through morphometric (wing length), ecophysiological (respiratory gas exchanges), biochemical (cuticular hydrocarbons composition) and molecular (AKH mRNA expression levels) parameters, variations of which are usually considered to be hallmarks of aestivation and dispersion mechanisms in various insects. Our results showed that ecophysiological and morphometric adjustments are made in both species to prevent water losses during the dry season. However, the usual metabolic rate modifications expected as signatures of aestivation and migration were not observed, highlighting specific and original physiological mechanisms sustaining survival in malaria mosquitoes during the dry season. Differences in epicuticular hydrocarbon composition and AKH levels of expression were found between the permanent and temporary A. coluzzii populations, illustrating the great phenotypic plasticity of this mosquito species. Altogether, our work underlines the diverse and complex pattern of changes occurring in the two mosquito species and at the population level to cope with the dry season and highlights potential targets of future control tools.
机译:选择和分散迁移是文献中诱发的两种策略,以解释疟疾载体罗利尼和A.Gambiae在撒哈拉以南非洲旱季生存的恶劣气候条件。然而,调节这两种策略的生理机制是未知的。在目前的研究中,蚊虫物种受到控制的受控环境条件,以模仿南部布基纳法索南部的雨季和干燥季节。通过形态测量(翼长),生态生理学(呼吸气体交换),生物化学(内氨酸烃组合物)和分子(AkH mRNA表达水平)参数研究生存策略,其变化通常被认为是各种审美和分散机制的标志昆虫。我们的研究结果表明,两种物种中的生态学和形态学调整,以防止干燥季节的水损失。然而,通常未观察到通常作为审美和迁移的签名的通常代谢率修改,突出了在干燥季节期间疟疾蚊子的生存生存的特定和原始的生理机制。在永久性和临时A.富含A.孔子群之间发现了凝结性烃组合物和AKH表达水平的差异,说明了这种蚊虫物种的巨大表型可塑性。完全是,我们的工作强调了两种蚊虫物种和人口层面发生的多样化和复杂的变化模式,以应对旱季,并突出未来控制工具的潜在目标。

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  • 作者单位

    Univ Rennes 1 CNRS Ecobio UMR 6553 Campus Beaulieu 263 Ave Gen Leclerc CS 74205 F-35042 Rennes France;

    Univ Montpellier 2 Univ Montpellier 1 MIVEGEC IRD CNRS 5290 UMR 224 911 Ave Agropolis BP 64501 F-34394 Montpellier 5 France;

    Univ Pierre &

    Marie Curie UPMC Dept Sensory Ecol Inst Ecol &

    Environm Sci Paris UMR 7618 4 Pl Jussieu Tour 44-45 3erne Etage F-75005 Paris France;

    Univ Pierre &

    Marie Curie UPMC Dept Sensory Ecol Inst Ecol &

    Environm Sci Paris UMR 7618 4 Pl Jussieu Tour 44-45 3erne Etage F-75005 Paris France;

    Univ Rennes 1 CNRS UMR Ethol Anim &

    Humaine 6552 Campus Beaulieu 263 Ave Gen Leclerc F-35042 Rennes France;

    Univ Montpellier 2 Univ Montpellier 1 MIVEGEC IRD CNRS 5290 UMR 224 911 Ave Agropolis BP 64501 F-34394 Montpellier 5 France;

    Univ Rennes 1 CNRS Ecobio UMR 6553 Campus Beaulieu 263 Ave Gen Leclerc CS 74205 F-35042 Rennes France;

    IRSS DRO 399 Ave Liberte 01 BP 545 Bobo Dioulasso Burkina Faso;

    Univ Montpellier 2 Univ Montpellier 1 MIVEGEC IRD CNRS 5290 UMR 224 911 Ave Agropolis BP 64501 F-34394 Montpellier 5 France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物学实验与生物学技术;
  • 关键词

    Aestivation; Migration; Adipokinetic hormone (AKH); Cuticular hydrocarbons; Metabolic rate;

    机译:选择;迁移;奸淫激素(AKH);有乳清烃;代谢率;

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