648 



Fishery Bulletin 90(4). 1992 



shark Alopias spp., pomfrets (Bramidae; species in- 

 cluded Taractichthys steindachneri, Taractes rubes- 

 cens, and Eumegistus illustris), lancetfish AiepisaurMs 

 ferox, and bigeye tuna (Fig. 4). 



Capture times 



Most of the fish (except ribbonfish Trachipterus ishi- 

 kawae and brown ray Dasyatis violacea) were caught 





o 

 e 



u 

 c 

 o 



3 



o 



so- 

 ls 



16 - 

 14 

 12 

 10 



8 



6 



4 



2 







45 



40 



35 - 



30 



25 



20 



15 



10 



5 







11 

 10 



9 



B 



7 



6 



5 



4 



3 



2 



1 







E3 Skipjack tuna 

 m Yellowfin tuna 

 EZD Spearfish 

 EIZJ Striped marlin 

 HB Bigeye tuna 



[X] Ribbonfish 



E2 Wahoo 



cm Pomfret 



I — I Mabimahi 



Kaa Lancetfish 



hm 



m. 



rx~] Brown ray 

 rrn Thresher shark 

 CZZI Blue shark 

 ^ ffhitetip shark 



Hffl 



omI 



>-. 'S Si si A jsjaj:ij3j3ja 



OS in — * fv 



Tf in ^ r^ CO CT^ 

 I I I I I I 

 rr) -t in *i3 r^ CO 



£ '* 



Figure 5 



Hook-timer data for 14 taxa caught off Hawaii, winter 1989 

 and 1990 ((.■omhined). Height of each bar represents the sum 

 of frequencies for each taxa (stacked bars). Hook timers were 

 either not triggered, triggered while the gear was being set 

 or recovered, or triggered by fish caught while gear was sink- 

 ing, settled (0.5-9. Oh before recovery), or rising. 



1/5 



o 

 c 



u 



c 



CI 



3 



cr 

 a 



u 



b 



12 



10- 

 8- 



ESa Live bigeye tuna 

 ■1 Dead bigeye tuna 



CD Live striped marlin 

 ■i Dead striped marlin 



1 



EZ2 Live spearfish 

 ^ Dead spearfish 



u 



MJ 



>> Xi 



-H tA) no 



IP ^ !~- 



^ r\j n 



Figure 6 



Condition (alive or dead) of three important species in rela- 

 tion to the elapsed time between capture and recovery as in- 

 dicated by hook timers, during a study off Hawaii, winter 1989 

 and 1990 (combined). 



