Abstract

Over many years of field studies (1958–2017), we determined that, under the conditions of the northern periphery of the range, the rate of sexual maturation of bank vole juveniles depends on the calendar date of birth more than on the absolute age. It was noted that individuals can reproduce as early as 25–30 days after birth. The earlier the animals are born, the faster they grow and develop and the earlier they mature and begin to reproduce. It was established that males and females born later than June do not generally mature in the year of birth and reproduce only the next spring, after wintering, and although among them there are mature individuals (mainly July broods), their number does not exceed 21%. It was found that the rapidly developing underyearlings of early broods, almost without exception participating in reproduction in the year of birth, provide population growth by the fall of the current year, and those born in the second half of summer serve as a population reserve for the next breeding season. We registered the age-related differences in the quality of the population and a clear “distribution of responsibilities” between individual generations, which are quite labile and serve as one of the most important mechanisms of population regulation. It was also noted that the fertility of adult and breeding new females depends not only on the environmental conditions, but also on their numbers in spring.

中文翻译：

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银河田鼠的繁殖生态学（Clethrionomys）glareolus Schreb。在该山脉的北部边缘：交流2.成人和青少年的性成熟与生育

摘要

在多年的现场研究（1958–2017年）中，我们确定，在该范围的北部边缘条件下，河岸田鼠青少年的性成熟率取决于出生日期而不是绝对年龄。有人指出，个体可以在出生后的25-30天之内繁殖。这些动物出生得越早，它们的生长和发育就越快，它们越早成熟并开始繁殖。可以确定，出生于六月之后的雄性和雌性通常在出生年份不成熟，并且仅在越冬后的第二个春天繁殖，尽管其中有成熟个体（主要是七月育雏），但其数量不超过21岁。 ％。人们发现，早期育雏的未成年鸽，几乎无一例外地在出生年份参与繁殖，在当年秋季之前提供种群的增长，而在夏季的下半年出生的人则作为下一个繁殖季节的种群储备。我们记录了与年龄有关的人口质量差异，以及各代人之间明确的“责任分配”，这很不稳定，是人口调节的最重要机制之一。还指出，成年雌性和育种新雌性的生育能力不仅取决于环境条件，还取决于春季的数量。我们记录了与年龄有关的人口质量差异，以及各代人之间明确的“责任分配”，这很不稳定，是人口调节的最重要机制之一。还指出，成年雌性和育种新雌性的生育能力不仅取决于环境条件，还取决于春季的数量。我们记录了与年龄有关的人口质量差异，以及各代人之间明确的“责任分配”，这很不稳定，是人口调节的最重要机制之一。还指出，成年雌性和育种新雌性的生育能力不仅取决于环境条件，还取决于春季的数量。