Comparative infectiousness of three passerine bird species after experimental inoculation with Mycoplasma gallisepticum
Comparative infectiousness of three passerine bird species after experimental inoculation with Mycoplasma gallisepticum
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DOI：
10.1080/03079450802499100
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发表时间：
2008-01-01
期刊：
影响因子：
2.8
通讯作者：
McCleery, Brynn V.
中科院分区：
文献类型：
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作者：
Dhondt, Andre A.;Dhondt, Keila V.;McCleery, Brynn V.
鸡毒支原体已经从各种自由生活的鸟类中分离出来，因此我们检验了除主要宿主家雀(Carpodacus Micianus)以外的鸟类物种可能在该感染的流行病学中发挥作用的假设。比较了家雀、美国金翅雀(Carduelis Tristis)和家雀(Passer Home Ticus)在结膜囊内接种鸡瘟分支杆菌后的病程，以及这三种麻雀对其他幼虫的感染程度。家雀的临床症状最轻，美洲金翅雀居中，家雀最高。在很短的时间内，家雀对幼小的家雀只有轻微的传染性，而美国金翅雀在接种后长达49天仍然具有传染性，尽管那时还没有疾病的身体迹象。我们的结论是，由于美洲金翅雀可以在不表现任何结膜炎的情况下具有传染性，而且它们经常进行长距离运动，它们可能在家雀体内鸡毒杆菌的动态中发挥着尚未被怀疑但却很重要的作用。
Mycoplasma gallisepticum has been isolated from various species of free-living birds, and we therefore tested the hypothesis that bird species other than the main host, the house finch (Carpodacus mexicanus), could play a role in the epidemiology of the infection. We compared the disease course in the house finch, American goldfinch (Carduelis tristis) and house sparrow (Passer domesticus) after inoculation into the conjunctival sac with M. gallisepticum, and also the degree to which the three species were infectious to other naive house finches. Severity of clinical signs was least in house sparrows, intermediate in American goldfinch and the highest in house finch. House sparrows were only mildly infectious to naive house finches for a short time, whereas American goldfinches remained infectious for up to 49 days post inoculation, although by then there were no physical signs of disease. We conclude that since American goldfinches can be infectious without showing any conjunctivitis, and since they often make long-distance movements, they might play an as yet unsuspected but important role in M. gallisepticum dynamics in house finches.