Hello!
As we all know that since covid-19 pandemic entered our beloved country India, all the schools’ colleges, and all other educational institutions are shut down, of course for the safety of students and parents as well. Everything was online …After waiting for 2 long years, at home since 2020, and also after completing covid-19 vaccination, I went to college (Elphinstone college, Mumbai) …
I still remember the date 17th February 2022 and the pleasing experience I had…
let me start with the story of me entering CUBE Chatshalla and my Homelab Experience…
On the 18th of February 2022, my senior Zahra from the third year, gave me a bottle of moina…confused …Right!! I was also confused at that time, What is this Moina and why should I take it and why should I culture it …like this several questions arose in my mind…You must be wondering what am I actually working on …Moina?? I’m working on the Powerful Model Organism - Hydra, why Powerful…because it is immortal and there are various other reasons behind it…
As I said earlier, on the 18th of February 2022, I got a bottle from my senior, I brought that bottle home and started a Home Lab for culturing Moina. There were approximately 40-50 Moina in that bottle with 125ml DC Water and 250ml was the capacity of that bottle… now we can easily visualize the bottle.
Next, I kept approximately 2 liters of tap water in open for 24 hours, so that chlorine dissolved in that will be evaporated …which we call now DC Water or De-Chlorinated water …so now we wonder, why we don’t need chlorine for our subculture thing…
Chlorine is added to disinfect the water, to make it free from other harmful bacteria which are favorable for humans to drink, so yes, Moina is not a bacteria but Moina feeds on bacteria present in water, so in turn, Moina is also affected as its food is getting killed by chlorine. That is why we need De-Chlorinated Water for culturing of Moina …all this I know now …thanks to everyday Cube Chatshalla sessions …
Before moving forward, let me tell you what is Moina in very simple words and how to identify it ?
So, if we go into very basic identification then, Moina has a jerky motion, unlike our normal fishes which have smooth motion. They are of size 1mm in length, 1mm in the sense 1/10th of a centimeter. Moina is a freshwater Crustacean (Prawn or Crab-like organisms) found in ponds, lakes, and rivers.
Crustaceans are organisms with a hard covering or shell. Also, it is commercially reared as it is a live feed for fish.
Now let us learn how I cultured Moina at home:
So first and foremost, I took two transparent bottles of 500ml capacity and filled them half i.e. 250ml of DC Water. Then I added approximately 5 Moina from the previously made Moina culture bottles that were given to me by my senior, and one drop of milk, daily. This may seem simple to you but it was complicated for me in the beginning, I used to literally torture my senior @drishtantmkawale, to guide me through this whole process, I still bother him …
After this process, I just need to put one drop of milk in all the subcultures every day. After two days, i.e. 20th February 2022 my Moina subculture showed an increase in the Moina count, I was happy that I have done all the procedures in right manner but after 7 to 8 days from my subculturing, the Moina count in my subcultures started to decrease for an unknown reason, because the decrease was only in the newly made cultures of mine, the bottles that Zahra gave me was showing increased no. of Moina even after my cultures were showing the decrease in no. …so, it was a sad moment for me, then again I went to @drishtantmkawale for help, he said this is normal as you are making subcultures for the first time and there will always be ups & downs everywhere, so @drishtantmkawale told me to make new subcultures from the parent bottles again and again the same issues arose … frankly speaking, I was so frustrated but I never gave up, again I subcultured Moina and now I have 300+ Moina in my HomeLab, after 40 days of my beginning …Thanks to @drishtantmkawale s I discussed earlier, I was culturing Moina as a feed for Hydra …So my classmates @dhanrajtribhuvan and Pritesh will be telling more about the Hydra model system…