The study involved horseflies in England... not tse-tse flies in Africa. As far as the effect of 'such diseases' on a zebra's fecundity, I have no idea. For al

The study involved horseflies in England... not tse-tse flies in Africa. As far as the effect of 'such diseases' on a zebra's fecundity, I have no idea. For all we know, a feverish lethargic zebra is EASIER for a stallion to mount than a healthy zebra. Nobody knows. The study, incidentally, did not deal with the types of flies accustomed to biting zebras. I have every reason to think a typical African biting fly would have no problem alighting on a zebra... it's what they do for a living.