Soybean+Cyst+Nematode

The second stage juvenile is the mobile and infective stage, worm-like in appearance and unable to be seen with the naked eye. It penetrates the roots and punctures the cells with a spear-like structure (stylet), then migrates toward food-conducting tissues where it feeds.
 * Common Names:** Soybean Cyst Nematode
 * Scientific Name:** //Heterodera glycines//
 * Phyla:** Nematoda
 * Class:** Chromadorea
 * Size:** About 32 of an inch. Can be seen with an unaided eye.
 * Description of Habitat:** On any vegetation plantation.
 * Living Requirements:** They live and thrive on farmer's crops.
 * Life Cycle of Animal:** Six stages are involved in the life cycle of this nematode: an egg stage, four juvenile (larval) stages, and the adult stage.




 * Male and Female Differences:** Females are usually larger than the males.
 * Interesting Facts:**
 * Unlike other nematodes, you can actually see this nematode without a microscope.
 * The female can produce 50 to several hundred eggs, the majority of which remain inside the female body. Others are deposited in a gelatinous mass in the soil. After the female dies, the body remains intact and hardens into a tough leathery sac known as a cyst. Eggs and juveniles can persist in these cyst bodies for several years until they are stimulated to hatch in the presence of host plants.
 * As in other species of Heterodera, physiological races or biotypes have been identified for the soybean cyst nematode. These races differ in ability to develop on different soybean varieties. Therefore, in any program of control or breeding for resistance, the question of race must be considered.
 * Human Impact:** Soybean varieties with resistance to soybean cyst nematode have been developed and are available to growers.



//**Work Cited**//
 * Zookeeper: James Kanthachack**
 * []
 * []
 * []