No. Any number of people can make derivative works based on the same public domain work. If each derivative work is original , creative, authored by a human, and fixed in a tangible medium, then each creator of a derivative work can claim and register a copyright in the work he or she created. The derivative works must be original, though. If one derivative work based on a public domain work is a copy of another one, then the second derivative work does not satisfy the originality requirement for copyright protection, and only the first derivative work would receive copyright protection.
