Symposium Introduction

Antibiotic form of relationships in which both interacting population, or one of them have a negative impact. Relationship predator - The victim, the parasite - the owner - these are direct food connection, essentially this type of environmental interactions, include all variants of food links.

Predation - one of the most common forms of great importance in self biocenoses. Predators known animal (and some plants), feeding on other animals, which they caught and killed.

Objects of hunting predators varied. For example, foxes eat fruit, bears gathering berries, and love of forest honey bees. Natural selection, acting population of predators increases the efficiency of searching and catching prey, produce complex behavior, such as concerted action by the pack of wolves when hunting deer. Victims in the selection process also improves tools protection and avoidance of predators.

Parasitism. Organisms may use other types, not only as a place habitat, but also as a permanent source of supply. Essentially parasitic nature have links pests with plants. There are several tens of thousands of species of parasitic forms, of which about 500 - parasites rights, therefore the study of parasites is necessary for the prevention and treatment diseases.