Moina : a model system

They won’t think before laying in this case!

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I kept a count of my cultures from day 1 till day 10 excluding few holidays in between and then made this graph via Microsoft Excel + Microsoft Powerpoint.

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Yes sir.
Will surely get in touch with them.

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What do you mean by thinking?
Is thinking inheritable?

Isnt this behavior inheritable and just a innate behavior which changes based on response to environment?

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Yes this is what I was talking about but wasn’t able to find back this reference…thanks @pratittodkar . Many questions are arising and things are getting sorted and simplified with such brain storming questions and inputs . Great work @drishtantmkawale @pratittodkar :clap::ok_hand::+1:

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Haven’t done anything like this before…good to see your efforts and determination for your model system :ok_hand::+1:

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You can also see that the tank gets ahead only after 13 September readings can that indicate something?

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Arey…
The tank was made on 13th September itself!!:laughing::joy:
I didn’t mention the date!!

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Oh that’s why. I thought that all of them were made on the same day :sweat_smile:

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Nah, MD is the date of making the cultures!

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:joy::joy::joy::joy: this is why @Arunan sir says , mention everything so that people could have a clear idea of what you are doing. Anyways fun in learning :joy::clap::ok_hand: @pratittodkar @drishtantmkawale

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Approximately around 700 moinas on Monday ??? :star_struck::astonished:What will you be doing with Soo many moinas ? How many do you require for performing your experiments?

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Something is wrong with my own Moina culture till yesterday everything was fine but suddenly today there are rotifers in it and the population seems to have been reduced by more than half. There were around 15 yesterday now only around 5 remain.:cry:

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By rotifers you mean clumps right?
So change the water and bring back the same condition.

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No I don’t mean the clumps by rotifers I mean the organism rotifers.

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Are those tiny creatures visible to your naked eyes!? :flushed:
How are you sure that rotifers only are the culprit for your decrease in numbers and that too in a single days time??

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I don’t know but I can see them being the only difference and ya we can see them with our naked eyes. I think I would need to do some water testing too to find out whats the matter.

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Yes they can be seen with the naked eye…but my question is are rotifers harmful for moinas ? Just because there is increase in rotifer number that doesn’t mean they are the only culprit for decrease in moina …okay so let’s begin corelating things …what do you think what do rotifers feed on ? (Asking because if rotifers are eating bacteria then there could be less bacteria for Moinas) …and also the main question , are you sure they are rotifers and not any tiny worms ?

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Yes they are rotifers but only a few (2-3). They eat bacteria. They don’t harm Moina directly. I don’t think the cause is rotifer though that’s the only difference I can see currently before and after disappearance of Moinas though the water is unusually a lot murky. i think it has to do something with the milk I was feeding or there must have been some changes in the water constituents.

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Just 2-3 rotifers are affecting so much that half the moina population decreased??? :fearful::thinking: Please check again , there would be tremendous…but I’m thinking about how did they come in the culture…one way could be that your culture was already having rotifers in the water you used and they started multiplying after you fed milk to them.

But the main question here is , what happened to moina because of increase in rotifers?? One is decreasing another is increasing, what relationship must be here ? Is there something which we are unaware of ? Have you covered all the points after observation ?

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