Types of nematodes. Broadly speaking there are freeliving nematodes and nonfree living types of nematodes. The nonfree living nematodes are herbivores and feed on plant tissues. These plant parasitic nematodes are the target of nematode based pesticides. This type of nematode is the target of gardeners who use Marigolds and other nematode different types of plant parasitic nematodes Various nematodes feed on all plant parts: roots, stems, leaves, flowers and seeds. They specialize in the use of their stylet, depending on their style of feeding. Most plant parasitic nematodes are root feeders and live in the soil. The damage caused to the aboveground plant
Plant parasitic nematodes feed on living plant tissues, using an oral stylet, a spearing device somewhat like a hypodermic needle, to puncture host cells. Many, probably all, plant nematodes inject enzymes into a host cell before feeding to partially digest the cell contents before they are sucked into the gut. different types of plant parasitic nematodes
There are seven major types of nematode feeding strategies used by plant parasitic nematodes (Table 2). Ectoparasites: The first feeding type is the ectoparasitic mode, in which the nematode remains outside of the plant and uses its stylet to feed from the cells of the plant roots (Figure 9). Plant parasitic nematodes invade the roots of plants and position themselves to divert nutrients away from the plant toward their own growth. There are two types of plant parasitic nematodes. Ectoparasites feed from the outside of plant tissue and endoparasites enter the plant tissue in order to feed. Nematodes are microscopic worms 0, 1 mm in length and they vary in population density depending on the soil type and plants being grown. There are many types of nematodes, some induce the host plant to produce nutrients which the nematodes can survive on, some enlarge the plant root structures which they then live in or some do both. different types of plant parasitic nematodes Different freeliving species feed on materials as varied as algae, fungi, small animals, Plantparasitic nematodes include several groups causing severe crop losses. Rotations of plants with nematoderesistant species or varieties is one means of managing parasitic nematode infestations. For example, marigolds, grown over one or more Nematodes are a varied and ubiquitous group, but fall into the general types of predators, saprophages, plant parasites and animal parasites. Even these categories are problematic, however, since some species occupy one niche during their juvenile stages and another at adult stages. E. g. transport of infected plant materials between different countries (international dispersal) or parts of the countries (local spread) or by farm implements between fields and cultivations within fields. Management of plant parasitic nematodes. There are several methods commonly used to control plantparasitic nematodes.