Occurrence and vertical transmission of avian polyomavirus and circovirus in captive and wild Passeriformes in Poland.

IF 2.3 2区 农林科学 Q1 VETERINARY SCIENCES
Aleksandra Ledwoń, Ines Szotowska, Izabella Dolka, Joanna Turniak
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引用次数: 0

Abstract

Background: Diseases caused by polyomaviruses and circoviruses in parrots were first described in the 1980s. Then they began to be diagnosed in other orders of birds, including Passeriformes, such as Atlantic canaries (Serinus canaria) and estrildid and fringillid finches. Over time, these viruses have also been found in an increasing number of captive and wild passerine species. The aim of the study was to assess the occurrence of these viruses in captive and wild Passeriformes in Poland, and the transmission of polyomaviruses and circoviruses through eggs in Atlantic canaries and Bengalese munias (Lonchura striata domestica).

Results: Nested PCR tests for avian polyomavirus (APyV) and circovirus (CV) were carried out on organ samples from 331 captive and wild birds belonging to 45 species, necropsied between 2006 and 2024. Additionally, 112 samples of eggs and dead chicks of Atlantic canaries and Bengalese munias from two aviaries with breeding problems were examined. Positive PCR results for APyV were found in 98 birds (29.6%), while CV DNA was detected in 152 birds (45.9%). In 104 wild birds examined, APyV was found in 13 (12.5%) and CV in 35 (33.7%) individuals. In 227 captive birds, APyV was found in 85 (37.4%) and CV in 117 (51.5%) individuals. Co-infections with both viruses were found in 25.1% of captive birds and 7.7% of wild birds. Negative results for both APyV and CV were found in 145 (43.8%) birds tested. In Atlantic canaries, CV DNA was identified in 79% of unfertilized eggs and 59% of embryos examined. In Bengalese munias, CV DNA was identified in 62.5% of unfertilized eggs and in all chicks examined. APyV DNA was not detected in eggs or embryos of canaries and Bengalese munias, nor in any Bengalese munia chicks or canary chicks younger than 7 days.

Conclusions: Avian polyomaviruses and circoviruses are widespread in the population of captive and wild passerines in Poland, and a higher percentage of birds are infected with circovirus than with polyomavirus. Co-infections are more commonly observed in captive passerine birds than in wild passerine birds. Vertical transmission occurs for circoviruses, but not for polyomaviruses, in Atlantic canaries and Bengalese munias.

波兰圈养和野生雀形虫中禽多瘤病毒和圆环病毒的发生和垂直传播。
背景:由多瘤病毒和圆环病毒引起的鹦鹉疾病在20世纪80年代首次被描述。然后,它们开始在其他鸟类中被诊断出来,包括雀形目,如大西洋金丝雀(Serinus canaria)和金丝雀(estrildid和fringillid)。随着时间的推移,在越来越多的圈养和野生雀形鱼物种中也发现了这些病毒。本研究的目的是评估这些病毒在波兰圈养和野生过路虫中的发生情况,以及多瘤病毒和圆环病毒通过大西洋金丝雀和孟加拉文鸟(Lonchura striata domestica)的卵传播的情况。结果:对2006 - 2024年间死亡的45种331只圈养和野生鸟类进行了禽多瘤病毒(APyV)和圆环病毒(CV)的巢式PCR检测。此外,还对两个存在繁殖问题的鸟饲养场的112只大西洋金丝雀和孟加拉文鸟的卵和死雏鸟样本进行了检测。PCR检测APyV阳性98只(29.6%),CV DNA阳性152只(45.9%)。在104只野鸟中,有13只(12.5%)携带APyV, 35只(33.7%)携带CV。在227只圈养鸟类中,APyV 85只(37.4%),CV 117只(51.5%)。25.1%的圈养鸟类和7.7%的野生鸟类同时感染了这两种病毒。145只(43.8%)家禽APyV和CV均呈阴性。在大西洋金丝雀中,79%的未受精卵和59%的胚胎被鉴定出CV DNA。在孟加拉文鸟中,在62.5%的未受精卵和所有检查的小鸡中发现了CV DNA。APyV DNA未在金丝雀和孟加拉文鸟的卵或胚胎中检测到,也未在任何孟加拉文鸟雏鸟和小于7天的金丝雀雏鸟中检测到。结论:禽多瘤病毒和圆环病毒在波兰圈养和野生雀形鸟种群中广泛存在,圆环病毒感染比例高于多瘤病毒感染比例。共同感染在圈养雀鸟中比在野生雀鸟中更常见。环状病毒在大西洋金丝雀和孟加拉文鸟中发生垂直传播,而多瘤病毒不发生垂直传播。
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来源期刊
BMC Veterinary Research
BMC Veterinary Research VETERINARY SCIENCES-
CiteScore
4.80
自引率
3.80%
发文量
420
审稿时长
3-6 weeks
期刊介绍: BMC Veterinary Research is an open access, peer-reviewed journal that considers articles on all aspects of veterinary science and medicine, including the epidemiology, diagnosis, prevention and treatment of medical conditions of domestic, companion, farm and wild animals, as well as the biomedical processes that underlie their health.
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