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Survey Protocol for the Removal of Allowable Numbers of Northern Abalone, Haliotis kamtschatkana, for use as Broodstock in Aquaculture in British Columbia

Document format: pdf

Publisher: Fisheries and Oceans Canada

Creation date: 2002

A survey protocol and methodology to determine abalone abundance has been in use for the last three years. The present paper reviews the data collected during 6 surveys for broodstock purposes and uses these data to determine the appropriate level of removal. The proposed survey protocol and broodstock removal considerations are discussed.

These surveys provide little evidence of recovery of abalone populations. During abalone broodstock collections, more abalone were harvested than the allowable 1 percent of the calculated population under the initial protocol at several sites.

As part of a precautionary approach, the recommended maximum number of abalone to be removed for broodstock is 1 percent of the lower 90 percent confidence limit on the estimated population in the size range of 81-120 mm shell length. Abalone is a threatened species and all removal of abalone from the wild should be carefully considered.

Key Words: Canada • Abalone • Broodstock • DFO