Zoology Lecture 24

What types of feeding are seen in nematodes
- Deposit feeders
- Detritivites
- Microscavangers
- Carnivors
What type of nematodes would be carnivores

Free living nematodes
Where would the physical changes associated with differnet feeding patterns

The diversity of foregut architecture
Behind the buccal cavity what is the esohpagus subdivded into?

Distinct muscular and glandular regions
Figure 16.9 shwoing differnt patterns of mouth regions specifically in hookworms, some with teeth others witha covering of sorts
What does the high body pressure cause the feeding aspects of the boyd plan of nematodes to change as

The high internal pressure of nematodes requires that the mouth region be sepeared from the body by means of muscular aspects or sphyncters of the esophagus
Figure 16.5 showing how food needs to travel down a very muscular esophogaus which totaly shuts out the environment from the body cavity
Do nematodes have special organs for circulation or gas exchange?

Nematodes have no speical organs for gas exchange or circulation
What is it then that accomplishes circulation and gas exchange in nematodes

movement of coleomic fluid accomplishes this
What happnes to many nematodes in anerobic conditions?

They shift to teir anaerobic metabolic pathway

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Zoology Lecture 24

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Zoology Lecture 24

Updated

2010-11-29T06:40:32Z

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