Search results
Results from the WOW.Com Content Network
Biological pest control. Syrphus hoverfly larva (below) feed on aphids (above), making them natural biological control agents. Biological control or biocontrol is a method of controlling pests, whether pest animals such as insects and mites, weeds, or pathogens affecting animals or plants by using other organisms. [1]
The scale insect Dactylopius coccus produces the brilliant red-coloured carminic acid to deter predators. Up to 100,000 scale insects need to be collected and processed to make a kilogram (2.2 lbs) of cochineal dye. [88] A similar number of lac bugs are needed to make a kilogram of shellac, a brush-on colourant and wood finish. [89]
Defense in insects. Insects have a wide variety of predators, including birds, reptiles, amphibians, mammals, carnivorous plants, and other arthropods. The great majority (80–99.99%) of individuals born do not survive to reproductive age, with perhaps 50% of this mortality rate attributed to predation. [1] In order to deal with this ongoing ...
A pest is any living thing which humans consider troublesome to themselves, their possessions, or the environment. [1] Pests can cause issues with crops, human or animal health, buildings, and wild areas or larger landscapes. [2] An older usage of the word "pest" is of a deadly epidemic disease, specifically plague.
The microscopic mite Lorryia formosa (). The mites are not a defined taxon, but is used for two distinct groups of arachnids, the Acariformes and the Parasitiformes.The phylogeny of the Acari has been relatively little studied, but molecular information from ribosomal DNA is being extensively used to understand relationships between groups.
Invasive insects and pathogens are a serious threat to many forests in the United States and have decimated populations of several tree species, including American chestnut, American elm, eastern hemlock, whitebark pine, and the native ash species (see extended listing below). The loss of these tree species is typically rapid with both short ...
An agricultural aircraft applies low-insecticide bait against western corn rootworm. Pest control is the regulation or management of a species defined as a pest; such as any animal, plant or fungus that impacts adversely on human activities or environment. [1] The human response depends on the importance of the damage done and will range from ...
Depending on its species, a nematode may be beneficial or detrimental to plant health. From agricultural and horticulture perspectives, the two categories of nematodes are the predatory ones, which kill garden pests; and the pest nematodes, which attack plants, or act as vectors spreading plant viruses between crop plants. [63]