U.S. Department 

 of Commerce 



Seattle. Washington 



Volume 91 

 Number 4 

 November 1993 



Fishery 

 Bulletin 



M/n^T? ft n 0l08ica ' Moratory/ 

 Wood* Holt Ocianooraphic Institution 

 Library 



DEC 1 7 1993 



Woods Hole. MA 0254a 



Contents 



587 Alados, Consuela L., Juan Escos, and John M. 

 Emlen 



Developmental instability as an indicator of environmental stress in 

 the Pacific hake [Merluccius productus) 



594 Chang, Sukwoo 



Analysis of fishery resources, potential risk from sewage sludge 

 dumping at the deepwater dumpsite off New Jersey 



61 1 Chivers, Susan J., and Al C. Myrick Jr. 



Comparison of age at sexual maturity and other reproductive 

 parameters for two stocks of spotted dolphin, Stenella attenuate 



619 Chow, Seinen, M. Elizabeth Clarke, and Patrick J. 

 Walsh 



PCR-RFLP analysis on thirteen western Atlantic snappers (subfamily 

 Lutjaninae) a simple method for species and stock identification 



628 Edwards, Elizabeth F, and Christina Perrin 



Effects of dolphin group type, percent coverage, and fleet size on 

 estimates of annual dolphin mortality derived from 1987 U.S. tuna- 

 vessel observer data 



641 Gilpatrick Jr, James W. 



Method and precision in estimation of dolphin school size with 

 vertical aerial photography 



649 Labelle, Marc, John Hampton, Kevin Bailey, Talbot 

 Murray, David A. Fournier, and John R. Sibert 



Determination of age and growth of South Pacific albacore 

 ( Thunnus alalunga) using three methodologies 



664 Lovrich, Gustavo A., and Julio H. Vinuesa 



Reproductive biology of the false southern king crab [Paralomis 

 granulosa, Lithodidae) in the Beagle Channel, Argentina 



676 Sampson, David B. 



The assumption of constant selectivity and the stock assessment for 

 widow rockfish, Sebastes entomelas 



