Section 1. Notwithstanding the provisions of Subsection 703 (5), Chapter 7 of the Delaware Code, for the calendar year 1978, the trapping season for muskrats throughout the State shall end on March 20, 1978, but in embanked meadows or marshes in New Castle County, the open season shall end on March 25, 1978. This Act is retroactive to March 10, 1978.