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Tardigrade Testing

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by

Eli Kwiatkowski

on 17 January 2013

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Transcript of Tardigrade Testing

Tardigrade Testing THE MIGHTY TARDIGRADE EXTREME FACTS Food w Also know as moss piglets

In their tun state they can withstand:
Being boiled in alcohol

Lack of oxygen

Many noxious chemicals

Direct exposure to the vacuum of outer space

6x the atmospheric pressure We put one of the vials of living tardigrades in the freezer at 12:08 Our experiment Tardigrades are extremophiles which allows them to live in environments that would normally kill most animals

Can survive 500,000 Rad's (50,000 is lethal to humans)

Can survive in the vacuum of outer space

Pressures six times greater than the bottom of the deepest oceans

Certain species been found to survive from -272°C (almost absolute zero), to as high as 151° C Water bears feed on the fluids of plant and animal cells. They have stylets (the mouth of tardigrades) which allow them to pierce plant cells or animal body walls. A sucking passage from the nose and mouth to the esophagus allows them to eat the internal contents of their food. Some species of water bears are known to eat entire live organisms, such as rotifers and other tardigrades. This is a rotifer that was in its tun state. We saw it under the microscope. This was the first
one we saw, it changed state in about 40 minutes. And took it out at 2:38 They thawed in 10 minutes The first tardigrade emerged from its tun state in 12 minutes e left our second vial in the freezer for 18 hours after the vial thawed, we saw the first tardigrade in 30 minutes Results Vial 1 Vial 2 In freezer for 2 hours and 30 min In freezer for 18 hours After thawing 12 minutes to emerge
from tun state 30 minutes to emerge
from tun state Other observations Rotifers came out of their tun state faster than the tardigrades In vial 1 there was a higher percentage of living creatures
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