Ektoermiset

Ektoermiset, also known as ectotherms, are a group of animals that rely on external sources to regulate their body temperature. Unlike endotherms, which maintain a constant internal body temperature through metabolic processes, ectotherms adjust their body temperature according to their environment. This adaptation allows them to conserve energy, as they do not need to expend energy to maintain a high body temperature.

Ectotherms include a wide range of animals, such as reptiles, amphibians, fish, and some invertebrates like insects and arachnids. They exhibit various strategies to cope with temperature fluctuations. For example, reptiles and amphibians often bask in the sun to raise their body temperature and seek shade to cool down. Fish, on the other hand, use water currents to regulate their temperature.

The ability to regulate body temperature through external means has both advantages and disadvantages. On one hand, it allows ectotherms to inhabit a wide range of environments, from cold polar waters to hot deserts. On the other hand, it makes them more susceptible to temperature extremes, which can affect their metabolism, growth, and reproduction.

In summary, ektoermiset are a diverse group of animals that rely on external sources to regulate their body temperature. Their ability to adapt to various environments is a result of their unique physiological traits, which also make them vulnerable to temperature fluctuations.