tiny daphnia

another video of the culture. the green water has been cleared, so i fed them more last night. twelve hours later the water is clear again.

up near the top of the culture you can see small white fuzzy specks that almost look like a cloud. its all baby daphnids.

http://s1242.photobu...0720_104153.mp4

well, i learned a lesson today: dont put a light, even a compact florescent, on the side of a daphnid tank. i put a light on the side so that i could see them better from above and forgot about it... when i came back several hours later, nearly all of the adult daphnids(and probably many larvae) were dead at the bottom of the tank on the side the light was on. i have no idea if it was the heat that killed them or what, but im chalking this one up to lessons learned. the culture is still quite viable and there is much more in it than what i started with, so it should snap right back.

Edited by Auban, 22 July 2012 - 02:38 AM.

Hi Auban,


This is a good one:


Pennak's Freshwater Invertebrates of the United States:

Porifera to Crustacea
-- by Douglas Grant Smith

What kind of ostracods do you raise?

Cheers,
Dona

i just ordered a copy. hopefully, i will be able to ID the six or so cultures i have going on right now. i also ordered a copy of the third edition of Wetzels "Limnology, lake and river ecosystems", so i may be a bit busy reading for the next few days... or months.