Movements and site fidelity of harbour seals (Phoca vitulina) in Kattegat, Denmark, with implications for the epidemiology of the phocine distemper virus
Movements and site fidelity of harbour seals (Phoca vitulina) in Kattegat, Denmark, with implications for the epidemiology of the phocine distemper virus
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DOI：
10.1093/icesjms/fss144
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发表时间：
2013-01-01
影响因子：
3.3
通讯作者：
Olsen, Morten T.
中科院分区：
文献类型：
--
作者：
Dietz, Rune;Teilmann, Jonas;Olsen, Morten T.
在丹麦卡特加特中部的安霍尔特岛捕获并标记了27只海豹，那里是1988年和2002年猪瘟热病毒(PDV)爆发的中心，导致50%-60%的人口死亡。卫星标记显示，来自安霍尔特的海豹在卡特加特广泛移动，最大距离为249公里。总体而言，与男性相比，女性旅行的区域更广[90%的核心家园(KHR)女性，5189公里(2)；男性，3293公里(2))。KHR计算的一岁海豹(6414千米(2))大于亚成体(2534千米(2))，也大于成年海豹(1713千米(2))，显示出很强的位点保真度，表明外引位点之间的基因流动有限。距离的移动和家的范围大小在秋季增加，在2-3月达到顶峰，并在整个春季减少。在春季的繁殖季节，安霍尔特周围的所有海豹都非常静止。1988年和2002年，当安霍尔特港海豹在4月份聚集在该岛时，发生了PDV疫情。安霍尔特海豹也被证明与赫塞洛、L索和瑞典西海岸的受感染海豹位置有接触，尽管这种接触发生在有记录的夏季疫情之前的冬季。
Twenty-seven harbour seals were caught and tagged at the island of Anholt in central Kattegat, Denmark, the epicentre of the phocine distemper virus (PDV) outbreaks in 1988 and 2002 that killed 50-60% of the populations. The satellite tagging shows that harbour seals from Anholt moved widely across Kattegat with a maximum distance of 249 km from the tagging haul-out site. Overall, females travelled over a wider area compared with males [90% kernel home range (KHR) females, 5189 km(2); males, 3293 km(2)). KHR calculated for yearlings (6414 km(2)) is larger than for subadults (2534 km(2)), which again is larger than for adult seals (1713 km(2)), showing a strong site fidelity, indicating limited gene flow between haul-out sites. Distances moved and home range sizes increased across autumn, peaked in February-March, and decreased through spring. During the breeding season in spring, all seals were very stationary around Anholt. The onset of the PDV epizootics in 1988 and 2002 took place when the Anholt harbour seals congregate on the Island during April. Anholt seal were also documented to have contact with infected seal locations at Hesselo, L so, and the Swedish west coast, although this contact takes place during winter prior to the documented summer outbreaks.