Natural Mosquito Repellent
Undoubtedly, the dragonfly is one of the most fascinating and curiosity-inspiring insects for humans. Not only because of its intense and vibrant color that leaves many people in awe but also because of its characteristics and functions in the environment.
Dragonflies are carnivorous predators that play a significant role in the ecosystem due to the number of mosquitoes they consume. They are harmless to humans and have never been considered a dangerous plague that needs eradication.
Let’s get to know our friend the dragonfly a little better and the roles it plays in the environment.
Morphological Characteristics of Dragonflies
Currently, more than 5,500 different species of dragonflies are known, and it is estimated that they appeared over 300 million years ago.
Morphologically, they are characterized by a slender and elongated abdomen, large and globular eyes that allow them to have a 360º field of vision.
They have six legs, each covered by tiny hairs that enable them to catch their prey. Their four wings, two on each side, are very large and striking and can measure up to 19 cm depending on the species.
As we mentioned, they are highly effective carnivorous predators, meaning they feed on other insects, mainly mosquitoes. Although small, dragonflies are excellent hunters, placing them at the top of the insect food chain. They can catch an insect during flight thanks to their agility and the tiny hairs on their legs that trap small insects.
Generally, they are native to warm climates, mainly in tropical and subtropical regions, although they can be found on every continent (except Antarctica and the North Pole). Considering the vast amount of time they have inhabited our planet, we can appreciate their great resilience and adaptability.
The Role of Dragonflies in the Environment
Primarily, the role that dragonflies play in their ecosystem greatly benefits humans. A decrease in the dragonfly population would be a risk not only to the balance of their habitat but also to our health. Therefore, it is unfeasible and unthinkable to use pest control treatments against this type of insect. They significantly help eliminate other insects that transmit diseases, such as mosquitoes.
Dragonflies consume large numbers of mosquitoes throughout their lifecycle. Both in their larval stage (when they live in water) and as adults, they are voracious eaters of mosquito larvae and adult mosquitoes. This natural predation helps control mosquito populations, reducing the spread of mosquito-borne diseases such as malaria, dengue fever, and Zika virus.
Additionally, studies have shown that thanks to dragonflies, there are areas where yellow fever or malaria infections have been reduced.
Their reproductive function is quite interesting to mention here, as they live most of their lives near water, where they form pairs to reproduce. The reproduction process of dragonflies is somewhat complex, but generally, males must fight to win over the female, and the winner must take care of his partner while she lays eggs in the water.
In conclusion, dragonflies are spectacular insects, both for the benefits they bring to the ecosystem and for their overall functionality. Their role in controlling mosquito populations makes them invaluable allies in maintaining a healthy environment.