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首页> 外文期刊>Parasitology >Factors affecting Culicoides species composition and abundance in avian nests.
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Factors affecting Culicoides species composition and abundance in avian nests.

机译：影响鸟巢中Culicoides种类组成和丰度的因素。

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摘要

Mechanisms affecting patterns of vector distribution among host individuals may influence the population and evolutionary dynamics of vectors, hosts and the parasites transmitted. We studied the role of different factors affecting the species composition and abundance of Culicoides found in nests of the blue tit (Cyanistes caeruleus). We identified 1531 females and 2 males of 7 different Culicoides species in nests, with C. simulator being the most abundant species, followed by C. kibunensis, C. festivipennis, C. segnis, C. truncorum, C. pictipennis and C. circumscriptus. We conducted a medicationxfumigation experiment randomly assigning bird's nests to different treatments, thereby generating groups of medicated and control pairs breeding in fumigated and control nests. Medicated pairs were injected with the anti-malarial drug Primaquine diluted in saline solution while control pairs were injected with saline solution. The fumigation treatment was carried out using insecticide solution or water for fumigated and control nests respectively. Brood size was the main factor associated with the abundance of biting midges probably because more nestlings may produce higher quantities of vector attractants. In addition, birds medicated against haemoparasites breeding in non-fumigated nests supported a higher abundance of C. festivipennis than the rest of the groups. Also, we found that the fumigation treatment reduced the abundance of engorged Culicoides in both medicated and control nests, thus indicating a reduction of feeding success produced by the insecticide. These results represent the first evidence for the role of different factors in affecting the Culicoides infracommunity in wild avian nests.
机译：影响寄主个体间媒介分布方式的机制可能影响媒介，寄主和所传播的寄生虫的数量和进化动力学。我们研究了影响蓝山雀（Cyanistes caeruleus）巢中发现的Culicoides种类组成和丰度的不同因素的作用。我们在巢中鉴定了7种不同Culicoides物种的1531雌性和2雄性，其中C.模拟器是最丰富的物种，其次是C. kibunensis，C。festivipennis，C。segnis，C。trunco​​rum，C。pictipennis和C. 。我们进行了一次药物熏蒸实验，将燕窝随机分配给不同的处理方法，从而在熏蒸和对照巢中生成了成对的成对的药物和对照。药物对被注射在盐溶液中稀释的抗疟药Primaquine，而对照对被注射盐溶液。熏蒸处理分别使用杀虫剂溶液或水进行熏蒸和对照。繁殖体的大小是与叮咬物丰富相关的主要因素，可能是因为更多的雏鸟可能会产生更多的媒介引诱剂。此外，用药物治疗未熏蒸巢中的血寄生虫的鸟类比其他组支持了更高的C. festivipennis。另外，我们发现熏蒸处理减少了药窝和对照窝中饱食的库里科尼德的丰度，因此表明杀虫剂产生的喂食成功率降低。这些结果代表了不同因素在影响野生鸟巢中库库瓜亚种群落中的作用的第一个证据。

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