NMFS announces that the spiny dogfish commercial quota available to the coastal states from Maine through Florida for the semi-annual quota period, May 1, 2006 - October 31, 2006, has been harvested. Therefore, effective 0001 hours, September 25, 2006, federally permitted commercial vessels may not fish for, possess, transfer, or land spiny dogfish until November 1, 2006, when the Period 2 quota becomes available. Regulations governing the spiny dogfish fishery require publication of this notification to advise the coastal states from Maine through Florida that the quota has been harvested and to advise vessel permit holders and dealer permit holders that no Federal commercial quota is available for landing spiny dogfish in these states. This action is necessary to prevent the fishery from exceeding its Period 1 quota and to allow for effective management of this stock.