IATTC Fishery Status Report 8 - Comisión Interamericana del Atún ...
IATTC Fishery Status Report 8 - Comisión Interamericana del Atún ...
IATTC Fishery Status Report 8 - Comisión Interamericana del Atún ...
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147<br />
TABLE J-3. Preliminary susceptibility attributes and proposed scoring thresholds used in the <strong>IATTC</strong> PSA.<br />
Susceptibility attribute<br />
Management strategy<br />
Areal overlap -<br />
geographical concentration<br />
index<br />
Vertical overlap with gear<br />
Seasonal migrations<br />
Schooling/Aggregation and<br />
other behavioral responses<br />
to gear<br />
Potential survival after<br />
capture and release under<br />
current fishing practices<br />
Desirability/value of catch<br />
(percent retention)<br />
Catch trends<br />
Ranking<br />
Low (1) Moderate (2) High (3)<br />
Stocks specifically named in<br />
conservation resolutions; closely<br />
monitored<br />
Management and proactive<br />
accountability measures in<br />
place<br />
Greatest bycatches outside<br />
areas with the most sets and<br />
stock not concentrated (or<br />
not rare)<br />
< 25% of stock occurs at the<br />
depths fished<br />
Seasonal migrations decrease<br />
overlap with the fishery<br />
Behavioral responses<br />
decrease the<br />
catchability of the gear<br />
Probability of survival ><br />
67%<br />
Stock is not highly valued or<br />
desired by the fishery (<<br />
33% retention)<br />
Catch-per-set increased over<br />
time<br />
Greatest bycatches outside areas<br />
with the most sets and stock<br />
concentrated (or rare), OR<br />
Greatest bycatches in areas with<br />
the most sets and stock not<br />
concentrated (or not rare)<br />
Between 25% and 50% of the<br />
stock occurs at the depths fished<br />
Seasonal migrations do not<br />
substantially affect the overlap<br />
with the fishery<br />
Behavioral responses do not<br />
substantially affect the<br />
catchability of the gear<br />
33% < probability of survival ≤<br />
67%<br />
Stock is moderately valued or<br />
desired by the fishery (33-66%<br />
retention)<br />
No Catch-per-set trend over time<br />
No management measures;<br />
stocks closely monitored<br />
Greatest bycatches in areas<br />
with the most sets and stock<br />
concentrated (or rare)<br />
> 50% of the stock occurs<br />
in the depths fished<br />
Seasonal migrations<br />
increase<br />
overlap with the fishery<br />
Behavioral responses<br />
increase the<br />
catchability of the gear<br />
Probability of survival <<br />
33%<br />
Stock is highly valued or<br />
desired by the fishery (><br />
66% retention)<br />
Catch-per-set decreased<br />
over time