Well I'm sorry first of all that I wasn't a member here soon enough to help you out.
I have male and female gerbils right now, and have had more in the past, and I can honestly say with my bunch at least that there's no real difference. Some people say that the females are temperamental and less loving but the worst-tempered gerbils I ever had were in fact males.
Just try to get your gerbils from a good breeder and not a pet shop if you can help it though as they will have better temperaments, whether male or female. Plus they are generally healthier and better-bred.
Good luck with your new squeakies
