U.S. DEPARTMENT 

 OF COMMERCE 



WILLIAM M. DALEY 

 SECRETARY 



National Oceanic and 

 Atmospheric Administration 



D.James Baker 

 Under Secretary for 

 Oceans and Atmosphere 



National Marine 

 Fisheries Service 



Rolland A. Schmitten 

 Assistant Administrator 

 for Fisheries 



^1 ^ 



NOAA 



Technical 

 Reports NMFS 



Technical Reports of the Fishery Bulletin 



Scientific Editor 

 Dr. John B. Pearce 



Northeast Fisheries Science Center 

 National Marine Fisheries Service, NOAA 

 166 Water Street 

 Woods Hole, Massachusetts 02543-1097 



Editorial Committee 



Dr. Andrew E. Dizon National Marine Fisheries Service 

 Dr. Linda L. Jones National Marine Fisheries Service 

 Dr. Richard D. Methot National Marine Fisheries Service 

 Dr. Theodore W. Pietsch University of Washington 

 Dr. Joseph E. Powers National Marine Fisheries Service 

 Dr. Tim D. Smith National Marine Fisheries Service 



Managing Editor 

 Shelley E. Arenas 



Scientific Publications Office 



National Marine Fisheries Service, NOAA 



7600 Sand Point Way N.E. 



Seattle, Washington 981 15-0070 



The NOAA Technical Report NMFS 

 (ISSN 0892-8908) series is published by 

 the Scientific Publications Oflice, Na- 

 tional Marine Fisheries Service, NOAA, 

 7600 Sand Point Way N.E., Seattle, WA 

 98115-0070. 



The Secretary of Commerce has de- 

 termined that the publication of this se- 

 ries is necessary in the transaction of die 

 public business required by law of Uiis 

 Department. Use of funds for printing of 

 this series has been approved by the Di- 

 rector of the Office of Management and 

 Budget. 



The NOAA Technical Report NMFS series of the Fishery Bulletin carries peer-re- 

 viewed, lengthy original research reports, taxonomic keys, species synopses, flora 

 and fauna studies, and data intensive reports on investigations in fishery science, 

 engineering, and economics. The series was established in 1983 to replace two 

 subcategories of the Technical Report series: "Special Scientific Report — Fisher- 

 ies" and "Circular." Copies of the NOAA Technical Report NMFS are available free 

 in limited numbers to government agencies, both federal and state. They are also 

 available in exchange for other scientific and technical publications in the marine 



