HELP with planaria...


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HELP with planaria...

Post by zebkaiku » Mon Apr 18, 2005 12:06 am

For my bio class i need to catch and make a two headed planaria, which has proven extremely difficult so far.

quick few questions for anyone who has any information:

1. How do i catch planaria? Teacher told us to use chicken liver... but where do i put it in the pond? on the surface or toward the bottom? Also what kind of pond is the best place to look for them, im in san jose california if anyone has any real specific spots in that area it would be awsome.

2. To make a two-headed planaria i stick them on a paper towel then i put them over ice, the problem i am having is that after i cut the planaria the heads refuse together and regenerate into one single head again.. anyone have any tips? any help would be great thanks so much.


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Post by mith » Mon Apr 18, 2005 8:42 pm

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Post by biostudent84 » Tue Apr 19, 2005 1:44 am

1. Place several chicken livers in the most active pond you can find...put each chicken liver at a different depth, light concentration, etc.

2. Continue cutting the split head at the fusing point until it ceases to fuse back together.


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Post by MrMistery » Wed Apr 27, 2005 7:29 pm

Two-headed planaria? Is this possible? Please do tell me more about how this is done, if you are so kind
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Post by Canaduck_89 » Sun May 08, 2005 8:19 pm

Well, planaria can regenerate, and their ganglia is kind of split into two different parts at the posterior end. So if you cut down the middle of that (maybe you need to cut a little farther down) two heads will grow. It's also possible to cut off it's head, and it will regrow a head on one side and a tail on the other creating two planaria, you can also give it two tails and so on.

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Post by thank.darwin » Tue May 10, 2005 9:20 pm

Planaria; what wonderful organisms :D
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Catching Planaria

Post by mlg » Mon Sep 18, 2006 3:15 pm

How do you go about actually catch the planaria? Do you put the Chicken Livers in something or are they fully exposed to any and all inhabitants in the pond?

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Post by Dr.Stein » Tue Sep 19, 2006 9:04 am

Planaria inhabits clear, cold fresh water on shaded area. It prefers slowly flowing water-body e.g. stream.

Tips to fish Planaria:
- Tie some fresh liver (not only fron chicken but can be from anything) as a bait on your rope tip.
- Then leave your "special Planarian fishing rod" for some minutes. Tie the rope on something just like a cowboy tie his horse bridle so you won't lose it.
- Check whether you already got your Planaria. They will attach on your bait.
- To remove them from your bait, dip the liver on a jar contains local water, shake it gently, they will detach. Don't use tweezers, they wil hurt our delicate lovely creatures ;)
- To take care of them, keep the temperature of the water or they will be dying. You can keep them in clean refrigerator but avoid sharp smells around them coz they don't like it.

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Post by kasied07 » Sun Sep 24, 2006 7:14 pm

for your class! i wish i could do something unique like that
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Re: HELP with planaria...

Post by CollinHCA » Thu May 20, 2010 9:54 pm

[color=#40FF00]I also have to catch a planarian, i have a perfect stream in my backyard. but can someone please tell me if you HAVE to use liver, or will any meat work?

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Post by Darby » Fri May 21, 2010 9:25 pm

The thing about liver, I think, is that it's "juicy," and the planaria will pick up the "smaell" and track it to its source. They climb on it, extend their pharynx and as long as the meat moves gently, stay on it feeding.

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Re: HELP with planaria...

Post by Mickey56 » Mon Aug 29, 2011 7:52 am

you could use a planaria trap with a little piece of meat or fish as bait.

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