摘要
四川短尾的鼩(Anourosorex squmipes)的怀孕期在每年的4、7、9月,种群数量高峰为6月和10—11月。其种群数量的消长可分为种群潜伏期(3—4月)、盛发期(6、8、9月)、始衰期(10—11月)、凋落期(12、1、2月)以及数量间歇期(7月)和繁殖间歇期(5月)。该兽在田间是以个体群为基础的聚集型分布格局,并有高密度时低聚集和低密度时高聚集的分布特征。
Anourosorex squamipes Milne-Edwards is one cf the dominant species of small mammals in Sichuan farmlands. Its population numbers varied with seasons in a year with two peaks, e.g. spring and autumn, the latter was a little higher than the former. The increasing and decreasing rules cf population number in a year were divided into five periods, that is, potential period (March to April); active period (June, August and September); pausing period (July); rising and declining period (October to November) and ditto period (December, January and February).
The distributive pattern of this animal in the fields was aggregative as individual group, but the relationship between the aggregation and population number was negative, when the population number was higher,the aggregative force was lewer. The results indicated that no pregnant individuals of female had been found in December, January and February, and the reproduction paused in these months.
出处
《兽类学报》
CAS
CSCD
北大核心
1990年第4期294-298,共5页
Acta Theriologica Sinica
