Population density
Many authors seem to agree that the optimum
ratio of water volume per larva is about 4 ml.
However, Bar-Zeev's results (1956) seem to show
that there may not be any unfavourable influence
caused by a very high population density.
This may mean that a high density does not
affect larval development as long as there is sufficient
food, but not so much as to cause excessive scum
formation. However, it would be profitable to
investigate the actual nutritive value of the microorganisms
propagating in the breeding medium, as
well as the food-chain problem between mosquito
larvae and micro-organisms.