Can the Standard Ices Co-Ordinated Ibts-Mik Survey Provide Reliable Data on Herring Recruitment and Spawning Locations in the North Sea?
Recently an MIKey-M net (20cm ring-net: 335 µm) attached to the MIK ring, was developed to sample ichthyoplankton. In addition to catching small herring larvae, the MIKey-M gives the possibility of undertaking winter spawning sampling on the IBTS.
In this study the catchability of fish eggs and herring larvae are compared between gears. This examines the utility of the IBTS-MIK survey to provide a reliable index of recruitment for the North Sea herring stock and the possibility of providing data for determining spawning locations.