What is the difference between Didelphic and Prodelphic?

In plant parasitic nematodes the number of ovary may be one or two. When there is one ovary that condition is known as monodelphic and when the number is two, the condition is called as didelphic. In monodelphic condition, the ovary is always, anteriorly directed, i.e Prodelphic.

What are three types of parasitic nematodes?

Animal and Human Parasitic Nematodes Nematodes parasitic on humans include ascaris, filarial nematodes, hookworms, pinworms, and whipworms.

What are common names of some parasitic nematodes?

Nematode parasites of animals occur in almost all organs of the body, but the most common sites are in the alimentary, circulatory, and respiratory systems. Some of these worms are known by such common names as hookworm, lungworm, pinworm, threadworm, whipworm, and eelworm.

What is Amphidelphic?

Amphidelphic Having two ovaries, generally one extending anteriad and the other posteriad of the vulva. See monodelphic, prodelphic, didelphic.

What is stoma in nematode?

Stoma : The anteriormost part of the digestive tract is the stoma. It varies in shape and size in different nematode groups having different food and feeding habits.

What are nematodes Deirids?

Definition of deirid : either of a pair of sensory papillae in the lateral cervical region of certain nematodes usually considered tactile organs.

What are the 6 intestinal nematodes?

Although numerous nematodes infect humans, six spend the majority of their lifecycle in the bowel lumen and are classified as intestinal nematodes: Ascaris lumbricoides; Trichuris trichiura (whipworm); Ancylostoma duodenale and Necator americanus (the two human hookworms); Enterobius vermicularis (pinworm); and …

What is bursa in nematodes?

The bursa is a lobular modification of the male posterior end in some groups of nematodes which is highly elaborated in strongylid nematodes (Fig. 1, page 192). During copulation the bursa surrounds the vulvar region of the female worm ( Nematodes/Reproductive Organs).

What is lateral ALAE?

Lateral Alae • Lateral alae may occur in males and females as lateral or sublateral extensions of the cuticle which may extend along body.

What is stylet of nematode?

At the head of a plant-parasitic nematode is a hollow mouth spear (like a hypodermic needle) called a stylet (Figure 3, 4). The nematode uses this stylet to puncture plant cells, to withdraw food and also to secrete protein and metabolites that aid the nematode in parasitizing the plant.

What are Amphids and Phasmids?

Solution : Amphids : These are the cuticular depressions present on the lips surrounding the mouth in the nematodes such as Aphasmidia animals and serve as Chemoreceptors. Phasmids : These are the well developed sensory organs and they occur in some nematodes such as phasmidia animals, Loading Books.

What is the Amphids function?

C. elegans senses chemicals in its environment using a collection of sensory neurons, the amphid neurons, whose cell bodies are located near the nerve ring in the head of the animal. Amphid neurons extend unbranched, ciliated sensory dendrites anteriorly to the tip of the animal’s nose.

What is bursa in parasite?

Why are Bursates called non Bursate nematodes?

The bursa (see Figure 6.6) is a very distinctive clasping organ situated at the posterior end of male worms belonging to particular superfamilies. The presence or absence of a male bursa enables a distinction to be made between ‘bursate’ and ‘nonbursate’ nematodes, which is a useful first step in worm identification.

What is caudal alae?

Caudal alae: cuticular extensions on either side of, or surrounding, male cloaca.

What does alae mean in anatomy?

nounWord forms: plural alae (ˈeɪliː ) zoology. a wing or flat winglike process or structure, such as a part of some bones and cartilages.

What is the function of a stylet?

In these groups the stylet is a hardened protrusible opening to the stomach. These stylets are adapted for the piercing of cell walls and usually function by providing the operative organism with access to the nutrients contained within the prey cell.

What is the use of stylet?

The stylet is a rigid but malleable introducer which fits inside the endotracheal tube and allows for manipulation of the tube shape; to facilitate passage of the tube through the laryngeal inlet.