For everybody wondering about the e-mails I've sent with the professor (who is also a biochemist) who has been posting research on roaches since 1966, I will copy those below.  Granted, there are over 4,800 species of roaches and no single person has researched them all to any great degree, so take away what you will from the questions and answers below.  I personally have a small breeder colony that I've had less than two months, so I am not an authority on roaches of any species.  I'm simply a