1. Observer sampling requirements for Dissostichus spp. in longline fisheries based on the data collection plan described in WG-FSA-10/32 (SC-CAMLR-XXIX, Annex 8, paragraph 5.34; SC-CAMLR-XXIX, paragraph 3.187). These sampling requirements serve as the default sampling requirements by subarea or division, unless alternative sampling requirements are agreed through the research plan review process. General sampling requirements are listed in Annex 1 of the CCAMLR Scheme of International Scientific Observation.
2. Biological measurements Type I: includes species, total length, sex and gonad stage as per CM 41-01, Annex B, paragraph 6.
3. Biological measurements Type II: includes species, total length, sex, gonad stage and total weight as per CM 41‑01, Annex B, paragraph 6.
4. Biological measurements Type III: includes otolith samples and all Type II data.
5. All recaptured toothfish should be sampled as Type III in addition to the sample number in the table.
Sample numbers in the table below indicate sampling of all fish up to the number listed in the table.
|
Fisheries in subarea/division |
Species |
Type I |
Type II |
Type III |
|---|---|---|---|---|
|
48.2, 48.5, 58.4.4a, 58.4.4b, 88.3 |
D. mawsoni |
n/a |
35 |
10 |
|
D. eleginoides |
n/a |
35 |
10 |
|
|
|
|
|
|
|
|
48.6, 58.4.1, 58.4.2, 58.4.3a |
D. mawsoni |
n/a |
35 |
10 |
|
D. eleginoides |
n/a |
35 |
10 |
|
|
|
|
|
|
|
|
88.1, 88.2 |
D. mawsoni |
n/a |
35 |
10 |
|
D. eleginoides |
n/a |
35 |
10 |
To help ensure that the work of observers is not unduly impacted by such operational changes, the sampling rate should be up to 7 fish per 1 000 hooks.
As a practical procedure to achieve the desired samples, observers should sample up to 10 fish per line for Type III (which includes all type II data plus 10 otoliths), then up to 25 fish per line for Type II, to an overall total of 35 fish per line (assuming an average line of 5 000 hooks).