当前位置: X-MOL 学术J. Mammal. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dispersal patterns of a recovering brown bear (Ursus arctos) population in a human-dominated landscape
Journal of Mammalogy ( IF 1.7 ) Pub Date : 2021-01-30 , DOI: 10.1093/jmammal/gyaa173
Alexandros A Karamanlidis 1, 2 , Alexander Kopatz 3 , Miguel de Gabriel Hernando 1, 4
Affiliation  

Despite increasing habitat fragmentation, large carnivore populations in parts of Europe have been recovering and expanding into human-dominated areas. Knowledge of animal dispersal patterns in such areas is important for their conservation, management, and coexistence with humans. We used genetic data based on 15 microsatellite markers from 312 individuals (98 females, 214 males) to assess kinship and dispersal patterns during the recovery and spatial expansion of a wild brown bear (Ursus arctos) population (2003–2010) in the human-dominated landscape of Greece. We hypothesized that bear dispersal in Greece was sex-biased, with females being more philopatric and males dispersing more frequently and over greater distances. Dispersal indeed was sex-biased, with males dispersing more frequently and farther than females. Overall, females were found to be philopatric; males also appeared to be philopatric, but to a lesser degree. However, a high proportion of females displayed dispersal behavior, which may be indicative of a pre-saturation stage of the population in that part of the country. Our results indicate that dispersal may be due to evading competition and avoiding inbreeding. We also documented long-distance dispersal of bears, which is considered to be indicative of a spatially expanding population. Our results highlight the value of using noninvasive genetic monitoring data to assess kinship among individuals and study dispersal patterns in human-dominated landscapes. Brown bears remain threatened in Greece; we therefore recommend systematic genetic monitoring of the species in combination with careful habitat management to protect suitable habitat (i.e., dispersal corridors) and ultimately ensure co-existence with humans and survival of brown bears in the country.

中文翻译:

在人类主导的景观中恢复的棕熊(Ursus arctos)种群的分散模式

尽管栖息地日益破碎化,欧洲部分地区的大型食肉动物种群一直在恢复并扩展到人类主导的地区。了解这些地区的动物传播模式对于它们的保护、管理和与人类的共存非常重要。我们使用基于 312 只个体(98 只雌性,214 只雄性)的 15 个微卫星标记的遗传数据来评估野生棕熊(Ursus arctos)人口(2003-2010)在希腊的人类主导的景观中。我们假设希腊的熊的扩散是有性别偏见的,雌性更亲近,而雄性则更频繁地散布更远的距离。分散确实是有性别偏见的,雄性比雌性分散得更频繁,也更远。总体而言,女性被发现是爱恋的;男性似乎也有亲情,但程度较轻。然而,高比例的女性表现出分散行为,这可能表明该地区人口处于预饱和阶段。我们的结果表明,分散可能是由于逃避竞争和避免近亲繁殖。我们还记录了熊的长距离扩散,这被认为是种群空间扩张的表现。我们的结果强调了使用非侵入性基因监测数据来评估个体之间的亲属关系和研究人类主导景观中的分散模式的价值。棕熊在希腊仍然受到威胁;因此,我们建议对该物种进行系统的遗传监测,并结合仔细的栖息地管理,以保护合适的栖息地(即散播走廊),并最终确保该国棕熊与人类共存和生存。
更新日期:2021-01-30
down
wechat
bug