We can also do regeneration studies with hydra as this system is very simple .Try cutting the hydra and see which parts regenerate the entire body with tentacles
1 Like
According to me mean by method is protocol to culture hydra
2 Likes
Yes so that’s what I have stated in my post @mohd.arifshaikh aren’t you convinced with my protocol? Please share your protocol too if you have better than this.
1 Like
Ma’am actually all the people in Hydra group as far as I know here in CUBE are doing only regeneration studies (amputing them and checking which part grows and why ?) ,There is no other study being done except this on Hydra …this is the only reason I asked all of you to put in your inputs and we all can start a new study on Hydra .
3 Likes
Are you talking about this 
protocol??
Protocol to culture hydra:
Step 1: Take approx 80ml De Chlorinated water in a 100ml Beaker.
Step 2: With the help of droper transfer hydras in that Beaker.
Step 3: Feed moinas to hydras by the ratio of 2:1 i.e 2 moinas per hydra by dropper
Step 4: After that by muslin cloth cover the beaker.
Clean the beaker everyday by removing the debris (dead moinas) using a dropper.
2 Likes
I would like the names of people in charge of Hydra model system and the location of CUBE with which they are coordinating for the wiki of all model organisms that we have at CUBE.
Check the wiki at:
3 Likes
@Sjuday2527 why not look at literature and find out what all studies can be done with hydra?
As we have hydra culture we can develop it.
Are there any stem cell research which can be done with simple model like hydra?
Can we understand areas like cancer with this simple looking organism?
How does the hydra sense it’s prey? is it by olfaction or water motion or light or some other method?
4 Likes
Simple and brain storming question sir 
will read about it and will revert back …
Hydra are members of a family of radially symmetric animals (Cnidaria), all of which use specialized cnidocytes (cells present on their tentacles) to catch prey. This family also includes well-known creatures such as jellyfish and corals, which, like other cnidarians, have the simple design of a mouth surrounded by tentacles. Hydra tentacles contain barbed, poison containing cnidocytes that they use to stun animals like the water flea, Daphnia , before eating them alive, and to protect themselves from attack by other animals.
https://www.sciencedaily.com/releases/2012/03/120305081421.htm
3 Likes
But is it only light?
In which case it should fire cnidocytes every time there is a passing shadow, a very energy wasteful process.
1 Like
Sorry sir but can you please explain this, I didn’t get you 
Sir Hydras have very thin tentacles that drift with the currents and sense any movement that touches them. But I don’t know what is causing such movement and how… Ithink when there is any change in the water current , the cnidocytes present on the surface of tentacles sense the intensity of force which has now changed because of the change in water current. So maybe based on the intensities which the cnidocytes are sensing they may react to it.
This is just a mere thought,
1 Like
The opsin protein is sensitive to light. So whenever there is change from light to dark or vice-versa it will react. However a change in light intensity in this case a reduction in intensity is not a guarantee of passing prey. If the hydra keeps firing it will waste a lot of energy.
What experiment can be designed to findout the hydra’s mechanism of identifying prey?
2 Likes
HYDRA REPORT
20-9-19
Soon after the day of making these 5 beaker cultures, I observed my Hydras so as to see whether there is any change or growth or increase in number of Hydras or not,etc. I was amazed seeing that just after one day of making culture I got to see budding occurring in my hydras. 
Which certainly means they were growing happily 
the 5 beakers are labeled as HC1, HC2…HC5. As mentioned earlier there were 3hydras in each.
So , on 20th September I observed that in,
HC1:-
Out of the 3hydras 2 showed budding
The third was fine showing movements but hadn’t started budding yet.
HC2:-
Out of the 3 Hydras in this beaker , only one showed budding with that too with an extremely small bud ,rest too being the same as the previous day.
HC3:-
In this one , I saw all the 3 Hydras floating on the surface of water and amongst those 3, two were having buds with tentacles.
HC4:-
Here in this beaker , I saw one Hydra with a bud at the bottom attached to the base of beaker
And the rest two were floating on the surface. Amongst both one was having a small bud while the another was same as previous day.
HC5:-
In this beaker all the tree showed no buds and we’re same as the previous day.
I’ll check tomorrow and see whether the buds have detached from the parent or not, and will also see it budding has occurred in those Hydras in which no bud was seen.
Pitch in guys and ask more questions (when does it float, how often does it eat, is hydra having a digestive system,etc) to get many doubts clarified. @drishtantmkawale @jtd @pratittodkar @Akshitha
5 Likes
Rod and cone cells in the human retina contain proteins called opsins that change shape when light strikes them. This causes another type of protein, an ion channel, to generate an electrical signal along nerves connecting the eye to the brain – a process called phototransduction.Hydras have the same types of opsins and ion channels as we do.
Well , I’m not sure at present how would I do but yes definitely I’ll see upon this and will work out on it. Any ideas for the design @drishtantmkawale @pratittodkar and all
4 Likes
Do they fire the poison every time there is a change from light to dark or just every time there is darkness? Is the poison acidic or basic and what’s it’s pH? What is the minimum water level that hydra’s need to survive? How much poison will they secrete in a single instance?
3 Likes
But hydras have no brain. Do they have nerves?
2 Likes
What are your future plans with these hydra?