The prevalence of beak and feather disease virus infection in wild populations of parrots and cockatoos in New Zealand
The prevalence of beak and feather disease virus infection in wild populations of parrots and cockatoos in New Zealand
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DOI：
10.1080/00480169.2007.36774
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发表时间：
2007-01-01
影响因子：
1.4
通讯作者：
Gartrell, B. D.
中科院分区：
文献类型：
--
作者：
Ha, H. J.;Anderson, I. L.;Gartrell, B. D.
目的：确定新西兰野生鹦鹉和凤头鹦鹉中喙羽病病毒（BFDV）感染的流行情况。东方玫瑰茄2004年4月至2006年2月，在Te Puke，惠灵顿和达尼丁，用雾网捕获了162只扁尾凤头鹦鹉（Platycercus eximius），（Cacatua galerita，n= 255），于2001年11月至2004年9月间进行宠物交易。使用已建立的聚合酶链反应（PCR）测试，从这两个物种的羽毛进行了测试BFDV。对部分东方玫瑰茄进行了尸检，并使用常规组织学方法检查了24只BFDV阳性鸟类的组织中是否存在特征性包涵体。东部玫瑰茄，24/162（14.8%）为BFDV阳性，真实患病率的95%置信区间（CI）估计为8.6- 20.4%，不同地区之间存在差异。东方玫瑰茄是阳性的BFDV显示没有临床或组织学的疾病或包涵体的迹象。结论：新西兰东部野生玫瑰茄和硫冠凤头鹦鹉中BFDV的高感染率对新西兰本地鹦鹉的保护和野生鹦鹉和凤头鹦鹉的出口具有重要意义。建议对新西兰野生外来鹦鹉进行BFDV的血清学研究和病毒基因型的分子生物学研究，以进一步确定新西兰野生外来鹦鹉和凤头鹦鹉群体中该病的起源和流行病学。
AIM: To determine the prevalence of beak and feather disease virus (BFDV) infection in exotic parrots and cockatoos in the wild in New Zealand.METHODS: Eastern rosellas (Platycercus eximius, n= 162) were caught from Te Puke, Wellington and Dunedin, using mistnets, between April 2004 and February 2006, and sulphurcrested cockatoos (Cacatua galerita, n= 255) were captured for pet-trading from November 2001 to September 2004. Feathers from both species were tested for BFDV, using an established polymerase chain reaction (PCR) test. Post-mortem examinations were conducted on some of the eastern rosellas, and selected tissues from 24 birds positive for BFDV were examined using routine histological methods for the presence of characteristic inclusion bodies.RESULTS: Of the eastern rosellas, 24/162 (14.8%) were positive for BFDV, and the 95% confidence interval (CI) for true prevalence was estimated as 8.6-20.4%, which varied between regions. Eastern rosellas that were positive for BFDV showed no clinical or histological signs of disease or inclusion bodies. Of the sulphur-crested cockatoos, 70/255 (28%) were positive for BFDV, and the 95% CI for true prevalence was calculated as 22-33%.CONCLUSIONS: The surprisingly high prevalence of BFDV in wild eastern rosellas and sulphur-crested cockatoos has serious implications for the conservation of native parrots and the export of wild-trapped parrots and cockatoos from New Zealand. Serological studies for BFDV in wild exotic parrots, and molecular studies of virus genotype, are recommended to further characterise the origin and epidemiology of the disease in populations of wild exotic parrots and cockatoos in New Zealand.