Structure of sex and age
Structure of sex and age - share of different age groups in the population, with division into sex. This participation is graphically represented by a scheme called the pyramid of sex and age. This parameter is on the one hand a fairly constant quality feature, on the other it is subject to strong influences of such factors as: reproduction, reproductive strategy and mortality. Evaluation of the age distribution of individuals provides a lot of information about the current condition of the population. Examination of the age structure should cover longer periods. If the population of the collarlets were examined within 48 hours after the swarming, it could turn out that there are no adult specimens in it. Such an image of the age structure would lead to false conclusions. Three periods can be distinguished in the life of each individual: Similarly, you can group individuals into juvenile, mature and aging. However, the number of age classes can be larger. It all depends on ho...