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Variation in Features of the Cranium of the Musk Deer Moschus moschiferus L. in Different Phases of the Population Cycle
Biology Bulletin ( IF 0.5 ) Pub Date : 2020-09-24 , DOI: 10.1134/s106235902004010x
V. I. Prikhod’ko

Abstract

The variation in four characters (three craniometrical and one nonmetric with supplemental bones) was investigated in 105 craniums of musk deer in different phases (depression and growth) of the population cycle from the East Sayan mountains. The duration of the cycle was 50 years, which corresponds to ten generations of animals. The results obtained show the multidirectional relation of skull sizes (craniometric variation) with phases in the population number in animals of different sexes. The variability of nonmetric characteristics of the skull is characterized by the greatest frequency of manifestation and the maximum quantity of additional bones during the phase of population depression in animals of both sexes, a gradual decrease in their quantity during the growth phase, and then complete loss of supplemental bones when there is an increase in population numbers. The revealed phene of the skull is a key cranial variation and may be used as a way for monitoring natural populations of rare and disappearing subspecies of musk deer.



中文翻译:

种群周期不同阶段的麝鹿颅骨特征变化

摘要

在东萨彦岭人口周期的不同阶段(抑郁和生长)的105个头盖骨麝香中,研究了四个字符(三个颅骨和一个非度量用补充骨骼)的变化。周期的持续时间为50年,相当于十代动物。获得的结果表明,不同性别动物的颅骨大小(颅骨测量变异)与种群数量的相位具有多向关系。头骨非度量特征的可变性的特征在于,在两性动物的种群减少阶段,出现的频率最高,附加骨骼的数量最多,在生长阶段,数量逐渐减少,然后,随着人口数量的增加,补骨完全丧失。颅骨的显露现象是关键的颅骨变异,可以用作监测麝香中稀有和消失的亚种自然种群的一种方式。

更新日期:2020-09-25
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