Jason Easton Medaka Project

Medaka Project • By Easton Renwick and Jason Craft

Day one 4/16

Cytopla sm

Day One • On day one our medaka was at stage 11 • Our medaka has no noticeable heartbeat • Our medaka also had no movement. • There is a large oil globule in the center of the medaka egg.

Day Two 4/17

Day Two • During day two of having the medaka it was in stage 20. • In stage 20 we noticed a little bit of growth • During this stage we still didn’t notice any type of heart beat • There is still no pigments in the egg

Day Four 4/19

Day Four • Day Four: Day four of the medaka it is in stage 26 • Today we noticed a clear heart beat in the medaka – About 85 beats per minute

• This is the first stage in which you can clearly locate the eyes (the big black dots). • We could also see the mouth in this

Day Five 4/20

Day Five • On day five of the medaka, it was in stage 28. • Our medaka had a major increase in heart beat going up to about 93 beats per minute • This is the first day we could really see the body of our medaka forming – It looks as though the medaka is curled

Day Six 4/21

Day Six • On day six the medaka was in stage 30. • Today our medaka had an increase in heartbeat to about 118 beats per second.

Day Seven Picture 4/22

Day Seven • On day seven, the medaka was on stage 32 • We found our that our medaka had about 132 beats per minute. • By this stage you can clearly see pigment in the medaka’s heart. • We could also clearly see the eyes in

Day Seven Movie

Hatched Medaka 4/27 fin

Hatching day April 27 • Today is the first day we saw our hatched medaka. • For the first time we can clearly see the fins of the fish • We can also tell that the tail was a lot longer than we originally presumed.

Requirements for life before and after hatching • Before hatching we had to make sure that were would change the water it was in. If we didn’t the water would get poisonous and our egg would die. • After it hatched we still had to change the water and unlike before we now had to feed the medaka.

Thanks for watching !

References

• http://www.embl-heidelberg.de/mepd/me