Tuesday, September 20, 2016

Vorticella Convallaria /Eupoltes

Vorticella Convallaria
Is different from the previously seen Vorticella Nebulifera  because it doesn't have retractile granules in the endoplasm. It also has a tendency of being commutative. The zooid (body) is 30–40 μm in diameter and has a  100–200 μm tail that can tightly coil in 1/60th of a second.  An organelle called a spasmoneme (myoneme ) is responsible for the rapid coiling. The spasmoneme contains calcium that binds with spasmin forming an electrical pulse. It returns to a non excited state when the calcium and spasmin are unattached and the stalk uncoils. Much like the other they eat bacteria and small protozoans. Reproduction is also the same.
Eupoltes
Is a clear hypotrich that is 80-200µm in size. It also has a C shaped macronucleus. Euplotes is considered the most evolved and complex protozoa. They are both sexual and asexual (binary fission ) creatures. It has two types of nucleus.  One macronucleus and one or more smaller ones.  It moves by using its cirri which is essentially cilia that is fused together.


No comments:

Post a Comment