Although these are the most common animals, their role is almost dominant. Without them, the life on Earth as we know it now would be impossible. Such importance is conditioned by the number, biomass, adaptability, behavior, small body dimensions, etc.
What gives them such a high position?
For most insects, these are wings that help them overcome various habitats and manage to escape from predators. A small body allows them more shelter and less food. Anatomy of the body also gives them great advantages (flat feet with water insects for quick swim, body glow, body shape and color similar to the environment in which they live, etc.)
Fleeing from danger, many have over time developed the ability to live in the soil. They spend most of their lives hidden from the outside world. A smaller number of insects adapted to life in water. They are mostly larvae, but there are cases when adult insects never leave the water. To survive in the new biotope, they had to evolve very quickly and “smartly” and adapt themselves to the new environment in the best possible way. To make the closest contact with the substrate, so that the water can not be taken away, some insects are spongy and abruptly flattened. Species that live in fast waters have special attachment organs, hooks on the abdomen, a special wolf hook at the end of the body, etc. Larvae of tulips live underneath the rocks of a network of nettles catching food, and thus do not risk being drowned.
Ecology of insects
The word ecology comes from the Greek word “oikos” which means habitat and “logos” – science. The prefix logo signifies that it is a scientific discipline that deals with the study of interactions between organisms in nature and the influence of external factors on their life and development. Each responds individually to the influence of an external factor. As a result of evolution, each organism requires certain conditions of life. So some insects quite normally live in extremely hot or cold areas, while other survive in water or very humid areas. Environmental conditions that affect the organisms can be abiotic (illumination, humidity, temperature, …), and biotic – an action of living organisms. Species do not react equally to changes in their habitat. This change is called ecological plasticity, which implies a degree of adaptability to newly emerging conditions and adapting to the hesitation of a factor.
Abiotic factors largely affect the distribution of species, and the length of development, and thus the number of generations per year. If the autumn is long and warm, insects will develop longer, and the number of generations can increase. The most important biotic factor is the food that determines whether the larva will develop at all in an adult, which ensures sufficient food storage in the form of fat tissue and determines the length of post-mortem development. If food is insufficient, the number of dressings increases.