Males are aggressive overall, they eat aggressively and swim aggressively. They pay no heed to babies, and injure them probably without even realizing or noticing. An injured baby shrimp is a dead baby shrimp.
Wow I never knew that!
But do you really physically remove the males for the time being? I mean it would be a pita. Plus while males are removed others females can't get berried. Plus what I notice about shrimp, females start berrying after one another like a chain reaction.