Symposium Introduction

Competition - a form of negative relationships between species. Charles Darwin thought the competition one of the most important parts of the struggle for existence, which plays a major role in the evolution of species. The competition - this relationship that emerged between species with similar ecological requirements. When these species occur together, each of them is in disadvantage because the presence of another reduces the possibility of the capture of resources, shelters and other means of livelihood, which has habitat. Competition - the only form of environmental relations which affect both the interacting partners.

Forms of competitive interaction may be very diverse: from direct physical struggle to co-existence. Nevertheless, sooner or later competitor displaces the other.

The reasons for the displacement of one species by another may be different. In plants suppression of competition is a result of interception of nutrients and soil moisture, root system and sunlight - sheet apparatus and as a result of highly toxic compounds.

In animals, there are cases of direct attack of one species to another competition. For example, larvae and egg parasites diachasoma tryonhi opius humilis, found themselves in a host egg, come together to fight and kill the opponent before you start eating.