Download FAR 2015/40 A survey of the Foveaux Strait oyster (Ostrea chilensis) population (OYU 5) in commercial fishery areas and the status of bonamia (Bonamia exitiosa) in February 2014

The 2014 bonamia survey was the first in new time-series of surveys has incorporated a fully randomised, two-phase sampling design and a standard survey area comprised 14 of the 26 stock assessment survey strata from 2012. The recruit-sized oyster population declined 21.8%. Summer mortality comprised of 39.4 million new clocks (6.8%) before the survey and 67.1 million oysters (11.5%) post-survey. Pre-recruits declined by 50.1%, and small oysters 65.4%. A downward trend in the stock is expected.