U.S. Department 
of Commerce 
Seattle, Washington 
Volume 99 
Number 3 
July 2001 
Fishery 
Bulletin 
Contents 
Articles 
389-398 Andrews, Allen H., Erica J. Burton, Kenneth H. Coale, 
Gregor M Cailliet, and Roy E. Crabtree 
Radiometric age validation of Atlantic tarpon. Megalops atlanticus 
399-409 Colura, Robert L., and Britt W. Bumguardner 
Effect of the salt-box catch-bycatch separation procedure, as used by 
the Texas shrimp industry, on short-term survival of bycatch 
410-419 Gillanders, Bronwyn M. 
Trace metals in four structures of fish and their use for estimates of 
stock structure 
420-431 Hanrahan, Brian, and Francis Juanes 
Estimating the number of fish in Atlantic bluefin tuna ( Thunnus 
thynnus thynnus) schools using models derived from captive school 
observations 
The conclusions and opinions expressed 
in Fishery Bulletin are solely those of the 
authors and do not represent the official 
position of the National Marine Fisher- 
ies Service (NOAA) or any other agency 
or institution. 
The National Marine Fisheries Service 
(NMFS) does not approve, recommend, or 
endorse any proprietary product or pro- 
prietary material mentioned in this pub- 
lication. No reference shall be made to 
NMFS, or to this publication furnished by 
NMFS, in any advertising or sales pro- 
motion which would indicate or imply 
that NMFS approves, recommends, or 
endorses any proprietary product or pro- 
prietary material mentioned herein, or 
which has as its purpose an intent to 
cause directly or indirectly the advertised 
product to be used or purchased because 
of this NMFS publication. 
432-442 Lucena, Flavia M., and Carl M. O'Brien 
Effects of gear selectivity and different calculation methods on 
estimating growth parameters of bluefish, Pomatomus saltatrix (Pisces: 
Pomatomidae), from southern Brazil 
443-458 McBride, Richard S., Timothy C. MacDonald, 
Richard E. Matheson Jr., David A. Rydene, and 
Peter B. Hood 
Nursery habitats for ladyfish, Elops saurus, along salinity gradients in 
two Florida estuaries 
459-464 McFarlane, Gordon A., and Jacquelynne R. King 
The validity of the fin-ray method of age determination for lingcod 
(Ophiodon elongatus ) 
