Hydra viridis

Images made through a microscope. All subject types.

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RogelioMoreno
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Location: Panama

Hydra viridis

Post by RogelioMoreno »

I found some of this specimen on my sample. I was curious about something left on the coverslip by the hydra after it moved from one place to other, I found that they are nematocysts used for locomotion.

#1: Plan Fluor 4/0.13 darkfield.
#2 and #3: Plan Apo 20/0.75, DIC

On #2 we can see the hydra using the nematocysts (they are sticky).
On #3 the nematocysts left by the hydra after using them.


Image

Image

Image

Rogelio

pwnell
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Location: Tsawwassen, Canada

Post by pwnell »

Very interesting.

RogelioMoreno
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Location: Panama

Post by RogelioMoreno »

Waldo, thank you.

Rogelio

carlos.uruguay
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Post by carlos.uruguay »

Marvelous document! Especially the last

uaalgae
Posts: 30
Joined: Sat Jan 07, 2012 8:51 pm
Location: Department of Biology, The University of Akron, Akron, OH.

Post by uaalgae »

I believe the nematocysts are used for defense, aren't they?
uaalgae

RogelioMoreno
Posts: 2977
Joined: Fri Nov 20, 2009 11:24 am
Location: Panama

Post by RogelioMoreno »

uaalgae,

You can read more info about the four types of nematocysts of the Hydra on the following link:

http://micro.magnet.fsu.edu/primer/tech ... cysts.html

Rogelio

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