家猫有世界性的分布,通常居住在城市,郊区和城郊环境对生物多样性保护也至关重要。这项研究描述了一种被定义的影响,自由漫游的猫对受到威胁的沿海海鸟的行为,澳大利亚仙女燕鸥,Nternulanerisneris,在曼杜拉,澳大利亚西南部。野生动物摄像机和直接观察夜间猫入侵燕鸥殖民地的情况,成年燕鸥的尸体被斩首,死了,受伤或失踪的燕鸥,殖民地周围的猫足迹和粪便提供了猫捕食的有力证据,这导致了嵌套行为的最初变化,最终,殖民地遗弃和111窝的繁殖失败。对于这个受威胁的物种来说,六个繁殖鸟的死亡是相当大的损失,并且有可能限制种群的增长。这项研究强调了自由漫游的猫对野生动物的重大负面影响,以及在管理物种保护的地点监测和控制猫的必要性。它还提供了强有力的证据来反对陷阱-中性-释放计划的做法,并证明了被解毒的猫可以通过捕食直接在释放后继续对野生动物产生负面影响,但也间接通过猎物行为的根本变化和父母照顾的减少。
Domestic cats have a cosmopolitan distribution, commonly residing in urban, suburban and peri-urban environments that are also critical for biodiversity conservation. This study describes the impact of a desexed, free-roaming cat on the behavior of a threatened coastal seabird, the Australian Fairy Tern, Sternula nereis nereis, in Mandurah, south-western Australia. Wildlife cameras and direct observations of cat incursions into the tern colony at night, decapitated carcasses of adult terns, dead, injured or missing tern chicks, and cat tracks and scats around the colony provided strong evidence of cat predation, which led to an initial change in nesting behavior and, ultimately, colony abandonment and the reproductive failure of 111 nests. The death of six breeding terns from the population was a considerable loss for this threatened species and had the potential to limit population growth. This study highlights the significant negative impacts of free-roaming cats on wildlife and the need for monitoring and controlling cats at sites managed for species conservation. It also provides strong evidence against the practice of trap-neuter-release programs and demonstrates that desexed cats can continue to negatively impact wildlife post-release directly through predation, but also indirectly through fundamental changes in prey behavior and a reduction in parental care.