Strong breeding colony fidelity in northern gannets following high pathogenicity avian influenza virus (HPAIV) outbreak
Strong breeding colony fidelity in northern gannets following high pathogenicity avian influenza virus (HPAIV) outbreak
复制标题
高致病性禽流感病毒（HPAIV）爆发后北方塘鹅繁殖群体保真度高
DOI：
10.1016/j.biocon.2023.110269
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发表时间：
2023
影响因子：
5.9
通讯作者：
Grémillet D
中科院分区：
文献类型：
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作者：
Grémillet D
高致病性禽流感病毒（HPAIV）在2021-2022年期间导致欧洲最严重的海鸟大规模死亡。北方塘鹅（桑属）是受影响最严重的物种之一，2022年4月至9月期间，东北大西洋有数万人伤亡。疾病爆发可以通过减少空间一致性来改变动物的运动生态，从而增加疾病传播的可能性。为了检测运动行为的潜在变化，我们在最初的HPAIV爆发后，在三个最大的北方塘鹅繁殖地（英国苏格兰的巴斯岩;英国威尔士的格拉斯霍姆;法国布列塔尼的鲁齐奇）对繁殖中的成年塘鹅进行了GPS跟踪。我们还收集了背景流行病学信息和北方塘鹅群体在疫情期间的动态。我们的数据表明，HPAIV杀死至少50%的北方塘鹅，并建议HPAIV H5 N1抗体存在于青少年。GPS追踪成年北方塘鹅仍然忠实于他们的繁殖地，尽管HPAIV爆发，并没有前景其他繁殖殖民地。它们定期在海上觅食，与疫情爆发前的行为相似。与2019年（即HPAIV爆发前）收集的GPS跟踪数据相比，2022年HPAIV幸存的鸟类觅食努力减少，可能是种内和种间食物竞争减少的结果。在我们的研究中，HPAIV大量死亡后存活的成年北方塘鹅的繁殖群体保真度表明病毒传播的能力有限。这可能与成年人在最初疾病爆发期间的行为以及年轻人的行为形成对比。
High pathogenicity avian influenza virus (HPAIV) caused the worst seabird mass-mortalities in Europe across 2021–2022. The northern gannet (Morus bassanus) was one of the most affected species, with tens of thousands of casualties in the northeast Atlantic between April–September 2022. Disease outbreaks can modify the movement ecology of animals by diminishing spatial consistency, thereby increasing the potential for disease transmission. To detect potential changes in movement behaviour, we GPS-tracked breeding adults following the initial HPAIV outbreak, at three of the largest northern gannet breeding colonies where major mortality of adults and chicks occurred (Bass Rock, Scotland, UK; Grassholm, Wales, UK; Rouzic, Brittany, France). We also gathered background epidemiological information and northern gannet colony dynamics during the outbreak. Our data indicate that HPAIV killed at least 50 % of northern gannets, and suggest the presence of HPAIV H5N1 antibodies in juveniles. GPS-tracked adult northern gannets remained faithful to their breeding sites despite the HPAIV outbreak and did not prospect other breeding colonies. They performed regular foraging trips at sea, similar to their behaviour before the outbreak. Comparison with GPS-tracking data gathered in 2019, i.e. before the HPAIV outbreak, suggested lower foraging effort in birds which survived HPAIV in 2022, potentially as a consequence of reduced intra- and interspecific food competition. Breeding colony fidelity of surviving adult northern gannets following HPAIV mass-mortalities indicates limited capacity for viral spread during our study. This may contrast with the behaviour of adults during the initial disease outbreak, and with that of younger individuals.