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首页> 外文期刊>Journal of Natural History: An International Journal of Systematics and General Biology >Relationship between environmental conditions and host-seeking activity of Ochlerotatus albifasciatus (Diptera: Culicidae) in an agroecosystem and in an urban area in Chubut, Central Patagonia, Argentina
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Relationship between environmental conditions and host-seeking activity of Ochlerotatus albifasciatus (Diptera: Culicidae) in an agroecosystem and in an urban area in Chubut, Central Patagonia, Argentina

机译：阿根廷巴塔哥尼亚中部丘布特市农业生态系统和市区环境条件与拟南芥（Ochlerotatus albifasciatus）的寄主活动之间的关系

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摘要

Ochlerotatus albifasciatus is associated with aquatic environments that are frequently flooded. Awareness of blood hematophagic activity of female mosquitoes is particularly important in species which are vectors of human disease and domestic animals. The study of host-seeking activity allows us to infer the risk of transmission of these parasites. The objective of this work was to study in an agro-ecosystem and urban area of central Argentine Patagonia the relationship between the circadian rhythm of activity of host-seeking of Oc. albifasciatus, and environmental variables. During January 2003, 99 human bait catches were carried out, of which 77.8% registered at least one individual of Oc. albifasciatus. Generalised linear models were used to evaluate the relationship between Oc. albifasciatus biting activity rate and capture time, environmental humidity, air temperature, sunshine degree, wind speed, habitat type and proximity of larval habitat. The model that best explained the variation in biting activity rate included the capture time, environmental humidity, air temperature, sunshine degree and wind speed as predictor variables. Host-seeking activity was higher in the evening than in the morning or afternoon, and it was positively related to mean air temperature and environmental relative humidity (RH), but negatively to sunshine degree and wind speed. The combination of these characteristics (wind speed less than 20 km/h, environmental temperature greater than 26 degrees C, sunshine less than 40% and (RH) greater than 50%) would provide favourable conditions to allow seeking activity and to feed on the host. The dispersion of this mosquito could be among environmental patches that present these characteristics.
机译：Ochlerotatus albifasciatus与经常被淹没的水生环境有关。意识到雌性蚊子的血液噬血活性在作为人类疾病和家畜媒介的物种中尤为重要。对寻求宿主活动的研究使我们能够推断出这些寄生虫传播的风险。这项工作的目的是研究农业生态系统和阿根廷中巴塔哥尼亚中部城市地区的Oc寻求寄主活动的昼夜节律之间的关系。 albifasciatus和环境变量。在2003年1月，共进行了99次人为诱饵捕捞，其中77.8％的人至少注册了1名Oc。白bi使用广义线性模型评估Oc之间的关系。蚊子咬人活动率和捕获时间，环境湿度，气温，日照度，风速，栖息地类型和幼虫栖息地的接近程度。最能说明咬人活动率变化的模型包括捕获时间，环境湿度，气温，日照度和风速作为预测变量。晚上的寄主寻找活动高于早晨或下午，并且与平均气温和环境相对湿度（RH）正相关，而与日照度和风速负相关。这些特征的组合（风速小于20 km / h，环境温度大于26摄氏度，日照小于40％和（RH）大于50％）将提供有利的条件，使人们能够寻求活动并以其为食主办。这种蚊子的散布可能在具有这些特征的环境斑块中。

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