This document summarizes a study on the ghost fishing of traps with and without escape gaps for catching portunid crabs. Researchers deployed three types of traps - conventional traps without escape gaps, traps with rectangular escape gaps, and traps with circular open holes - in underwater clusters and monitored them for periods of 2-10 weeks. They found that traps without escape gaps caused significantly more damage to non-target species compared to traps with escape mechanisms. Traps with escape gaps also caught fewer non-target species while not significantly reducing the overall catch of target portunid crabs.

1. ResumeJurnal
Relative Ghost Fishing of Portunid Traps
With and Without Escape Gaps
MattK.Broadhursta,b&RussellB.Millar
By: Ega Husna Anistia

2. Apa Itu?
Gambar 2. blue swimmer crab
Sumber : www.manettas.com.au
PORTUNIDAE
Gambar 1. trap
Sumber : broadhurst and Millar (2018)
TRAPS
Gambar 3. escape gaps
Sumber : broadhurst and Millar (2018)
ESCAPE GAPS

3. Gambar 4. trap
Sumber : broadhurst and Millar (2018)
CARA OPERASI >

4. < Cara Operasi
Gambar 5. Cluster
Sumber : broadhurst and Millar (2018)
SHORT
1-2 Minggu
MEDIUM
4-6 Minggu
LONG
8-10 Minggu

5. HASIL > Kerusakan Bubu (%)
20.5
4.5
0
0
5
10
15
20
25
Konvensional Escape Gaps Open Hole

6. HASIL > Total Hasil Tangkapan (%)
70
9
6 3 3
P. armantus Yellowfin Bream
fanbelly leatherjacket hairyback crab
S. serrata

7. HASIL > Hasil Tangkapan

8. HASIL > Hasil Tangkapan

9. HASIL > Kerusakan Tangkapan

10. HASIL > Kerusakan Tangkapan

12. Daftar Pustaka
JURNAL
Broadhurst, M. K. Dan Millar, R. B. 2018. Relative Ghost Fishing
of Portunid Traps With and Without Escape Gaps.
Fisheries Research. 208 : 202-209.
GAMBAR
Broadhurst, M. K. Dan Millar, R. B. 2018. Relative Ghost Fishing
of Portunid Traps With and Without Escape Gaps.
Fisheries Research. 208 : 202-209.
Manettas Seafood Market. https://www.manettas.com.au
/product/blue-swimmer-crab-green-raw-sydney/
(Diakses tanggal 21/09/2018 pukul 05.23 WIB)