Age-specific fecundity Ž . m reached greater values at low-salinity with the result that x in the assays at 25‰, maximum values approached three newborns per female per day, whilst at 35‰ they were of two offspring per female. Reproductive peaks appeared earlier in trials performed at high temperature: on days 2 and 3 in cultures at 208C and on days 1 and 2 in cultures at 258C