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).
Ross Sea Data Collection Plan Observer Sampling Requirements
|
Additional Data Collection |
Frequency |
Instructions |
|
Toothfish otoliths |
TOA & TOP: Area 88.1 and 88.2H: 10 per set for each species, 5 per sex TOA & TOP: SSRUs 88.2C-G: 10 fish each sex per 5cm length bin from 50-180cm (up to 260 otoliths for all 5 SSRUs combined). |
Standard SISO otolith collection protocols in observer manual |
|
Macrourid biological data |
ID to species, total length, snout anus length, weight, sex, gonad stage and gonad weight |
Standard SISO biological sampling protocols in observer manual |
|
Macrourid otoliths |
5 otolith pairs every set (from fish with biological data collected, from multiple species if available) |
Standard SISO otolith collection protocols in observer manual |
|
Skate tag recaptures |
Scan every skate for tags, identify species, photograph tags, sample biologically, collect thorns and freeze with label including tag number. |
Standard skate biological sampling protocols in observer manual. Label with vessel name, haul number and date. Instructions for collection and storage of thorns can be found here. |
|
Skate biologicals |
On any retained skates (including tag recaptures) , identify to species, measure pelvic length, total length, and wingspan, weight, gonad stage and injury codes. |
Standard SISO biological sampling protocols in observer protocols |
Coordinate with NIWA (Brit [dot] Finucci [at] niwa [dot] co [dot] nz) to arrange transport of skate thorns to NIWA:
Brit Finucci
NIWA
301 Evans Bay Parade,
Hataitai, Wellington 6021
New Zealand
+6443860583
If vessels are passing through Port Stanley, samples can be passed to their agents (Roy Summers, Sulivan Shipping Ltd.) for the attention of:
Joost Pompert
Georgia Seafoods Ltd
10 Boxer Bridge Road
Stanley
Falkland Islands
+500 22616 ext 110