Are Czech last names gender specific?

[JIllenberger]

Can someone confirm whether Czech family last names are gender specific?  I have a fairly large group in my family tree and it appears the females will have a version of the last name and the men a slightly sorter version of the same name.   Date ranges are 1600-1700 and even 1800s.

For example: 
Střihavková  (female)
Střihavka (male)

or

Dubský (male)
Dubská (female)

These are only a couple examples, but there are several, also appears the maiden name is often left out of records, was that common? 

[bbart]

Hi

According to Wiki, yes, they are gender specific.
https://en.wikipedia.org/wiki/Czech_name

Scroll down to Female Surnames.

[JIllenberger]

Ah, that is very interesting, I was wondering why four generations of family named their children the exact same first names.  Thanks!