Do colonies of water daphnia prevent mosquito larvae

[SteveMid]

I have a tub outside in the garden with rain water in that originally I used to use to occasionally harvest mosquito larvae to feed my aquarium fish. A couple of years ago I put a culture of water daphnia in it and have farmed these ever since. They live through the winter and bloom to a larger population in spring and summer. However, since I added the daphnia I have not seen a single mosquito larvae. There are midge larvae in there but never a mosquito larvae. Is this a known phenomenon? Surely something is putting the mosquitos off laying their eggs?

 

[Fishfur]

It’s not something I’ve ever heard of. Daphnia are filter feeders so they shouldn’t have any effect on skeeter larvae, which breathe air rather than water & generally the insects are not fussy about water so long as it’s quiet & still.

It may be something else that’s different about the water conditions that’s making the tub unattractive to the skeeters.