Lebedev B I
Folia Parasitol (Praha). 1982;29(2):97-105.
Parasitic animals make up one fifth to one fourth of all known animal species. There are many correct definitions of the parasitism, but the determinations as a qualitatively specific form of existence of organisms are logically well-grounded only within the concepts of symbiosis. The parasitism opposes with the predatoriness which cannot be ascribed to symbiotic types of vital activity. The problems of the population and niche are discussed in the present paper. An analysis is given of the parasitological niche the parameters of which coincide with the phenomena characteristic for the specificity. A somewhat changed definition of parasitism is proposed. The applicability of some biological concepts (theory of r and K selection, theory of granular environment) to parasitic organisms is considered.
寄生动物占已知动物物种总数的五分之一到四分之一。关于寄生现象有许多正确的定义，但作为生物体一种定性的特定存在形式，只有在共生概念范围内其判定才在逻辑上有充分依据。寄生现象与捕食现象相对，捕食现象不能归因于共生类型的生命活动。本文讨论了种群和生态位的问题。分析了寄生虫生态位，其参数与特异性特征现象相符。提出了一个略有变化的寄生现象定义。考虑了一些生物学概念（r和K选择理论、颗粒环境理论）对寄生生物的适用性。
