Nematoda

How nematode morphology? 
• Measuring microscopic (body diameter: 0.01 to 0.05 mm, length: 0.4 to 0.5 mm) 
• elongated cylindrical shape 
• The body encased by the nematode cuticle is transparent, not segmented, beranulasi fine to coarse. 
• body cavity (pseudokoelum) containing a viscous liquid that serves as a hydrostatic skeleton. 
• In the liquid there are three main organs, namely digestive, reproductive, and tools excretion. 
• hole mouth at the anterior end. What is the nature of the internal anatomy of the nematode? 
• The organs of the digestive system of the nematode consists of: the oral cavity with stilet, usofagus, colon, and rectum. 
• The reproductive system in both sexes are similar, which is shaped like a tube. 
• nematode female reproductive system consists of two branches (didelfik) that is located opposite to each other or experiencing kemundurun into one branch (monodelfik). Each branch has four main sections, namely: ovary, oviduct, uterus and vagina. In the oviduct are responsible for maintaining the spermatheca contained sperm. Vagina boils down to the outside through the vulva body whose position is located in the ventral part of the body slightly to the middle or back (posterior). 
• male sex organs are less variable, a single genital tract consists of the testes, seminal physical, fas deferens, and tools in the form of spicules copulation with a buffer plate called the gubernaculum. 



How nematode habitat? 
• Nematodes derived from aquatic animals 
• Nematodes parasitic plants require little water film (for ease of movement) and soil water content is a major ecological factor. 
• Many species of nematodes will die if the soil becomes dry.Conversely too much water will cause the soil contains less oxygen and many of them are dead nematodes, soil structure has a significant influence on the nematodes, especially the soil pores for the movement of nematodes. 
• In general, soil lingklungan Pasiran is the best for the nematodes. How parasitasi ektoparasitik nematodes? 
• Ektoparasitik, nematodes do not enter into the plant tissue, but only stiletnya piercing cells and sucking the contents of plant tissues, the longer owned stilet increasingly in obtaining food resources. 
• Semiendoparasitik, only the body of the nematode anterior (front) that goes into the root tissue and body bagianposterior remain outside the network (in the ground).

How parasitic nematodes endoparasitik?

The whole body into the plant tissue, there are two groups of endoparasitik, among others: 
1. Migratory endoparasitic nematodes: are able to migrate (migratory) remain active and engaged in the network where he ate.

2. Sedentary endoparasitic nematodes: are sedentary (Sedentary) the nematode females will get food from one particular place, then the nematodes will lose mobility and her body then ballooned.

Posted in: Habitat,Morphology,Nematode,Pest