Search results
Results from the WOW.Com Content Network
About 90% of nematodes reside in the top 15 cm (6") of soil. Nematodes do not decompose organic matter, but, instead, are parasitic and free-living organisms that feed on living material. Nematodes can effectively regulate bacterial population and community composition—they may eat up to 5,000 bacteria per minute.
Plants are able to determine what types of herbivore species are present, and will react differently given the herbivore's traits. If certain defense mechanisms are not effective, plants may turn to attracting natural enemies of herbivore populations. For example, wild tobacco plants use nicotine, a neurotoxin, to defend against herbivores ...
The nematode is available commercially in Europe and is applied by watering onto moist soil. [40] Entomopathogenic nematodes have a limited shelf life because of their limited resistance to high temperature and dry conditions. [39] The type of soil they are applied to may also limit their effectiveness. [38]
If entomopathogenic nematodes suppress the population of insect root herbivores, they indirectly benefit plants by freeing them from grazing pressure. This is an example of a trophic cascade in which consumers at the top of the food web (nematodes) exert an influence on the abundance of resources (plants) at the bottom.
Trichostrongylus species are nematodes (round worms), which are ubiquitous among herbivores worldwide, including cattle, sheep, donkeys, goats, deer, and rabbits. [1] [2] [3] At least 10 Trichostrongylus species have been associated with human infections. [1] Infections occur via ingestion of infective larvae from contaminated vegetables or water.
A fungus of the genus Arthrobotrys, showing adhesive nets which it uses to trap nematodes. Numbered ticks are 122 μm apart. Numbered ticks are 122 μm apart. A carnivorous fungus or predaceous fungus is a fungus that derives some or most of its nutrients from trapping and eating microscopic or other minute animals . [ 1 ]
Root-knot nematodes (Meloidogyne spp.) are one of the three most economically damaging genera of plant-parasitic nematodes on horticultural and field crops.Root-knot nematodes are distributed worldwide, and are obligate parasites of the roots of thousands of plant species, including monocotyledonous and dicotyledonous, herbaceous and woody plants.
Foliar nematodes occur throughout the United States in greenhouse and nursery settings. Foliar nematodes travel in films of water, swimming up the stems of plants and entering leaf tissue through stomata. The nematodes are transmitted plant to plant by splashing, overhead irrigation, rainfall, and other forms of dripping water. They can also be ...