Martínková Natália, Baird Stuart J E, Káňa Vlastislav, Zima Jan
Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, Brno, 60365 Czechia.
RECETOX, Masaryk University, Kamenice 753/5, Brno, 62500 Czechia.
Front Zool. 2020 Sep 1;17:26. doi: 10.1186/s12983-020-00370-0. eCollection 2020.
Behaviour during hibernation contributes to energy conservation in winter. Hibernating bats select roosts with respect to physiological and environmental stressors, available local microclimate and species-specific requirements.
We found that, in the period between 1977 and 2018, hibernating and bats showed exponential population growth. The growth rates, corrected for local winter seasonal severity and winter duration, were equal to 10 and 13%, respectively. While only utilised the thermally stable and, at survey time, warmer corridors in the hibernaculum, an increasing proportion of roosted in the thermally stable corridors as their abundance increased. About 14% of all hibernating displayed solitary roosting, irrespective of other covariates. Those bats that clustered together formed progressively larger clusters with increasing abundance, particularly in cold corridors. We found no statistically significant relationship for clustering behaviour or cluster size with winter severity or winter duration.
Abundance of hibernating bats is increasing in Central Europe. As the number of bats increases, thermally unstable corridors become saturated with large clusters and the animals begin to roost deeper underground.
冬眠期间的行为有助于冬季的能量保存。冬眠蝙蝠会根据生理和环境压力源、当地现有的微气候以及物种特定需求来选择栖息地。
我们发现，在1977年至2018年期间，冬眠蝙蝠的种群呈指数增长。经当地冬季季节严重程度和冬季时长校正后的增长率分别为10%和13%。虽然[某种蝙蝠]只利用冬眠场所中温度稳定且在调查时较温暖的通道，但随着其数量增加，越来越多的[另一种蝙蝠]栖息在温度稳定的通道中。所有冬眠蝙蝠中约14%表现出单独栖息，与其他协变量无关。那些聚集在一起的蝙蝠随着数量增加形成了越来越大的群体，尤其是在寒冷的通道中。我们发现聚集行为或群体大小与冬季严重程度或冬季时长之间没有统计学上的显著关系。
中欧冬眠蝙蝠的数量正在增加。随着[某种蝙蝠]数量的增加，温度不稳定的通道被大群体填满，这些动物开始在更深的地下栖息。
