Aphids, also called Aphidoidea, are a widespread group of insects found in almost all habitats. They feed on plant sap and can cause significant damage to agriculture, horticulture and ornamental plants. These small insects have soft, sap-sucking mouthparts that they use to suck the sap from the leaves, stems or flowers.
characteristics and life cycle
Aphids are often green, but there are species in other colors such as yellow, red, brown or black. They have a soft, oval body shape and are usually less than 4 mm in size. Aphids reproduce very quickly, with some species capable of explosive reproduction in a very short period of time. Most species reproduce both sexually and asexually. Their lifespan is about a month, but under favorable conditions they can reproduce rapidly in a matter of weeks.
damage to plants
Aphids can weaken plants and reduce their vitality through their diet. They take nutrients from the plants and can transmit toxins through their saliva that can lead to disease. Another problem is the secretion of honeydew, a sticky, sweet excretion product of the aphids. This honeydew promotes the growth of sooty mold fungi, which can turn the leaf surface black and impair the plant's photosynthesis.
Fighting aphids
To control aphids, it is important to take action early. Cultural practices such as removing weeds, cleaning plants regularly and removing infested plant parts can help reduce infestations. Natural enemies such as ladybirds, lacewing larvae, parasitic wasps and assassin bugs can also help keep aphid populations in check. For severe infestations, biological or chemical insecticides can be used, but it is important to ensure they are safe for the affected plants and will not harm the environment.