Both nematodes and trematodes are parasitic worms that prey on various plant and animal hosts. Nematodes, also known as round worms can live freely, but many species live in animal hosts and produce severe illnesses. Nematodes can infect plants heavy crop losses. Trematodes, such as flukes known to infect animals and their life cycles typically include staying in two different ways: a primary and an intermediate host.
Body shape and Reproduction
Nematodes have a simple body shape, often called a "pipe in pipe". With a simple digestive system, which extends from the mouth at one end to the anus at the other Trematodes have shaped flat, unsegmented body usually like a leaf or an oval. Nematodes have two sexes and reproduce sexually. Except for members of the genus Schistosoma trematodes are hermaphrodites, meaning they have sexual organs of both sexes.
Nematodes lay their hosts through liplike or toothlike plates that surround their mouth. Foods into the body cavity through the processing of the muscles that surround the opening, aspirated. In some species that prey on plants, the oral cavity in a hollow javelin, plant tissue can penetrate and make life changes. Trematodes value on their hosts with two suction cups, one front and one rear part.
Nematodes can a range of serious human diseases, including ascariasis, hookworm disease, whipworm disease, trichinosis, pinworm infection and strongyloidiasis. These infections primarily affect the intestines of hosts and are most common in the impoverished areas where hygiene standards are low. Trematodes can infect the skin, intestines, liver, blood, brain, lungs and other tissues of the host, and the symptoms can be severe and potentially life threatening.
Unlike trematode parasitic nematodes are major agricultural pests. Several species attack corn, soybeans, potatoes and sugar beets, which often cause significant crop losses. Several species feed on grass gases, and some fruit and ornamental trees are vulnerable as well. Although chemical controls are rarely effective, nematodes can be controlled by rotating crops and removes the pest of its preferred host plants or by planting varieties that are resistant to nematodes. Biological control – the introduction of fungal, bacterial or insect predators – can also be used.