I have no answer to that - me no scientist, don't even have a degree... But at Shark Savers, we have & are amending the data we are using... Do remember that Dr Clarke made that study 12years ago & the shark fins in the HK trade are mostly from 14 species of sharks... If anyone is keen, can actually download the FishStat Plus - Universal software for fishery statistical time series from http://www.fao.org/fishery/statistics/software/fishstat/en Maybe choose the data-set: Fisheries Commodities Production and Trade? (but it doesn't give the breakdown of species of sharks etc)
Today, I am just interested to share this awful story happening in Lombok, Indonesia... Dolphins die for Soup http://www.paulhiltonphotography.com/index.php/field-notes/
Tuesday February 28, 2012
"Presently there is an on-going battle between the shark fin industry and conservationists. Below is another dark side to the shark fin trade that we rarely see.
Despite legislation that prohibits the killing of dolphins and whales, small cetaceans are still caught in Lombok, Indonesia. Though some are eaten, many of these dolphins end up back on the hook, as bait for more lucrative targets."
"Back at the market I continued watching the longliners unload. At one point the whole beach around me was covered in thresher sharks. Later a full-grown spinner dolphin, followed by a juvenile, was dumped in the water. But then, to make things worse, a badly decomposed pilot whale joined the carcasses. The boats had no gill nets onboard and as dolphins rarely get caught on longline hooks, preferring to take free schooling fish as food, it’s likely that these animals had been specifically targeted, killed by harpoon or homemade explosives. We visited the market 10 times from early in 2010 and in late 2011 and dolphins were landed 70 percent of the time."