Shark Depredation and Unwanted Bycatch in Pelagic Longline
Shark Depredation and Unwanted Bycatch in Pelagic Longline
Shark Depredation and Unwanted Bycatch in Pelagic Longline
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<strong>Shark</strong> <strong>Depredation</strong> <strong>and</strong> <strong>Unwanted</strong> <strong>Bycatch</strong> <strong>in</strong> <strong>Pelagic</strong> Longl<strong>in</strong>e Fisheries<br />
3. Without shark regulations would you be better off<br />
economically?<br />
Yes 8<br />
No 6<br />
4. Without regulations do you th<strong>in</strong>k sharks would be worse<br />
off?<br />
Yes 8<br />
No 5<br />
5. If you could avoid shark capture altogether (or mostly)<br />
would you be better off economically than if you could<br />
fully utilize the sharks that you do catch?<br />
Yes 3<br />
No 11<br />
6. In your experience are sharks nowadays more or less<br />
abundant – all species?<br />
More 3<br />
Less 3<br />
Same 8<br />
7. Is shark damage to your gear a concern?<br />
Yes 12<br />
No 2<br />
8. If of concern, is this mostly for the extra time <strong>and</strong> effort to<br />
repair or replace gear, or for the actual cost of gear, (hooks<br />
l<strong>in</strong>e, swivels) lost to sharks?<br />
Gear 4<br />
Time 4<br />
Both 6<br />
9. Would your preference be, if possible:<br />
(a) To avoid shark bycatch ?<br />
(b) To not avoid it, (if free to fully utilise them?)<br />
Avoid 3<br />
Not 11<br />
10. Is the <strong>in</strong>come to your boat from sharks shared <strong>in</strong> the same<br />
way as all <strong>in</strong>come generated?<br />
Yes 8<br />
No 6<br />
11. Would this be the case if you were free to make use of all<br />
sharks caught?<br />
Yes 14<br />
No 0<br />
12. Do you fish differently (bait type, tim<strong>in</strong>g, position of sets)<br />
because there is greater <strong>in</strong>centive for you to avoid shark<br />
capture?<br />
Yes 11<br />
No 3<br />
13. Do you fish <strong>in</strong> any way that you th<strong>in</strong>k m<strong>in</strong>imises the<br />
numbers of sharks that you catch?<br />
Yes 13<br />
No 1<br />
14. Are there any th<strong>in</strong>gs you consider may further reduce<br />
shark captures or improve your efficiency <strong>in</strong> deal<strong>in</strong>g with<br />
the ones that are caught?<br />
Yes 0<br />
No 14<br />
15. Do you use devices designed specifically to help release<br />
bycatch such as sharks?<br />
Yes 7<br />
No 5<br />
16. Are you aware of devices that are not <strong>in</strong> use that may<br />
be effective for discard<strong>in</strong>g sharks?<br />
Yes 0<br />
No 14<br />
17. Provided appropriate regulations <strong>in</strong> relation to retention<br />
<strong>and</strong> use of sharks were <strong>in</strong> place, do you th<strong>in</strong>k that the option<br />
of <strong>in</strong>corporat<strong>in</strong>g a wire trace at the hook would potentially<br />
be advantageous or not:<br />
a) to economic impact of sharks?<br />
b) to ultimate conservation outcome to a shark that is caught?<br />
Yes<br />
No<br />
a) 6 8<br />
b) 3 11<br />
18. Do you th<strong>in</strong>k that any impression ga<strong>in</strong>ed of<br />
distribution <strong>and</strong> abundance from shark capture rates by<br />
fish<strong>in</strong>g vessels <strong>in</strong> your fishery is realistic?<br />
Yes 1<br />
No 12<br />
Uncerta<strong>in</strong> 1<br />
19. If shark flesh has little or no economic value do you th<strong>in</strong>k<br />
that deriv<strong>in</strong>g <strong>in</strong>come from parts such as f<strong>in</strong>s or oil alone is<br />
legitimate?<br />
Yes 9<br />
No 5<br />
50