Sharksfin ppt 1 SAR 8 12f

Estimation of ratio of fin weight to body weight of sharks in the eastern Pacific Ocean in 2006: 

Estimation of ratio of fin weight to body weight of sharks in the eastern Pacific Ocean in 2006 Soon-Song Kim, Doo-Hae An, Dae-Yeon Moon and Seon Jae Hwang National Fisheries Research and Development Institute (NFRDI), Republic of Korea

The survey area: 

The survey area 9°13’S~1°36’N and 126°00’ ~138°21’W from September 20 to October 23, 2006 Korean longliner : 416 GRT Monitoring : 28 set (one set per day) No. of hooks used : 62,464 - each set : 2,240 (560 of each type)

Catch and species composition of shark species : 

Catch and species composition of shark species

Shark species : 

Shark species Bigeye thresher shark Salmon shark Blue shark Longfin mako shark

Shark species : 

Shark species Oceanic white-tip shark Smooth hammerhead shark Scalloped hammerhead shark Crocodile shark Smallmouth velvet dogfish

Catch per unit effort by bait : 

Catch per unit effort by bait

Fish condition at landing : 

Fish condition at landing

Disposal of sharks trunk : 

Disposal of sharks trunk

Disposal of sharks fin by fin type after fishing: 

Disposal of sharks fin by fin type after fishing * 2 fishes larger than 1 meter were finned. LS: large-sized shark SS: small-sized shark ○: Retain ×: Discard

Sharks finning: 

Sharks finning

Ratio of wetted fin weight to body round weight of shark: 

Ratio of wetted fin weight to body round weight of shark

Ratio of wetted fin weight to dried weight of shark: 

Ratio of wetted fin weight to dried weight of shark

Sex ratio of shark: 

Sex ratio of shark

Length distribution of sharks: 

Length distribution of sharks

Results: 

Results The catches of sharks taken on 62,464 hooks were 413 in number and 11,093kg in weight of 9 species The ratio of wetted fin weight to body round weight of sharks by species ranged from 4.1 to 8.1% and mean was 5.08%. The total ratio of wetted fin weight to dried fin weight of sharks and the ratio ranged 0.38 to 0.70 and mean value was 0.53. BW = DFW/[( Ratio of wetted fin weight to body round weight) x (Ratio of wetted fin weight to dried fin weight)]