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Paramecium

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Jakob Coffelt

on 30 November 2015

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Transcript of Paramecium

Paramecium
caudatum
Ecological Significance
P.
caudatum
regulates prey populations
Algae
Bacteria
Amoeba
Euglena

P.
caudatum
is a vital food source for
Nematoads
Flat Worms
Filter Feeders

Secondary Consumer
How it Aquires Energy
Interesting Facts
harbor about 700 Symbiotic Chorella spp. cells in their cytoplasm.

Thousands of trichocysts are embedded as defensive organelles against predators
Interesting facts
Oldest fossil recovered is 75 million years old.
Recovered from an amber sample, just like Jurassic Park.
They are also a model organism used by many biologists for various studies
Habitat
Margulis L. Illistated Glossary of Protoclista. (n.d) Retrieved December 2, 2014 from http://www.bio.umass.edu/biology/conn.river/parameci.html

Ecological Significance
P.
caudatum
secretes substance "P"
Mucopolysaccharide with constituents glucose and arabinose

Substance "P" causes Flocculation
Suspended particles aggregate into macromolecules and sink

Applications
Sewage Treatment
Water Purification
Water Solute Balance
Curds, C. (1963). The Flocculation of Suspended Matter by Paramecium caudatum. J Gen Microbiol., 33, 357-363.
Paramecium. (n.d.). Retrieved December 2, 2014, from http://www.fcps.edu/islandcreekes/ecology/paramecium.htm
Human Health Implications
P.
caudatum
filters harmful pathogenic fungi
Cryptococcus
neoformans

Reduce the frequency of bacteria and solutes in drinking water
Filtering effect + Release of Substance "P"

Reduce harmful algae blooms

P.
caudatum
isn't toxic to humans
Hydrochloric acid lysis membranes
Fresh water aquatic environments
Lakes, Rivers, Ponds, and ditches
Prefer stagnant, warm water where they can feed on algae, small bacteria and yeats
Margulis L. Illistated Glossary of Protoclista. (n.d) Retrieved December 2, 2014 from http://www.bio.umass.edu/biology/conn.river/parameci.html
Structural Features
Contractible Vacuoles for expelling water
Micronucleus
Macronucleus
Buccal or Oral cavity lined with cillia
Cytopharynx (throat)
Approximately 120 to 330nm in length
Distinguished by their constant oval like shape and dual nuclei

They can even live in Metropolitan areas as long as they have water containing decaying organic material
Cilia draw food down the Buccal cavity into the Cytopharnyx where it is sent into food vacuoles to be digested
Feeds on other microrganisms
Bacteria, Algae, Yeasts
Cilia
Sweeps food
Oral Groove
enters body
Food Vacoule
holds food particles
& nutrients
Cytoplasm
nutrients absorbed
Reproduction
Asexually:
Binary Fission

Frager, S., Chrisman, C., & Shakked, R. (2010). Paramecium species ingest and kill the cells of the human pathogenic fungus Cryptococcus neoformans. Med Mycol, 48(5), 775-779
Sexually: Conjugation
Reasons: Food shortage, Enviormental changes
1. Macro nuclei elongates & divides through mitosis

2. Micro nuclei divides by mitosis

3. Tranverse pinch begins to divide into daughter cells

4. completed in appox. two hours
Impact of Flocculation
Ecological
Human Facilitated
By: Jakob Coffelt
Kelsey Chand
Diana Navarrete
Cory Gall

Source: https://algaebiodiesel.wikispaces.com/Flocculation. Retrieved. December 2nd 2014
Source: http://commons.wikimedia.org/wiki/File:Activated_Sludge_1.png. Retrieved. December 2nd 2014
Kodama Y, Fujishima M. 2010. Endosymbiosis of Chlorella species to the ciliate Paramecium bursaria alters the distribution of the host's trichocysts beneath the host cell cortex. Department of Environment Science and Engineering. 248:325-337.
Margulis L. Illistated Glossary of Protoclista. (n.d) Retrieved December 2, 2014 from http://www.bio.umass.edu/biology/conn.river/parameci.html
Questions?
(perryheightsyoung.weebly.com)
Hiwatashi, Koichi. "Determination and inheritance of mating type in Paramecium caudatum." Genetics 1968; (58.3) : 373.
Schmied, J. The Characteristics of Living Things. 2013. http://www.goscienceseven.com/cells/characteristics.living.things/characteristicsoflifeparam.htm
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