1998
DOI: 10.1016/s0165-7836(97)00078-7
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A study of optimum positioning of square-mesh escape panels in Irish Sea Nephrops trawls

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Cited by 26 publications
(23 citation statements)
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“…Studies have shown that the effectiveness of the square mesh panel depends on its position relative to the cod-end, but the literature is somewhat contradictory in terms of the optimum panel position. Graham and Kynoch (2001) and Graham et al (2003) suggest that the panel is more effective closer to the cod-end, Armstrong et al (1998) suggests that the panel is better placed further forward in the trawl, and O' Neill et al (2006) found that the panel was most effective in a mid-position. It is likely that these differences are largely due to the trawl design.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Studies have shown that the effectiveness of the square mesh panel depends on its position relative to the cod-end, but the literature is somewhat contradictory in terms of the optimum panel position. Graham and Kynoch (2001) and Graham et al (2003) suggest that the panel is more effective closer to the cod-end, Armstrong et al (1998) suggests that the panel is better placed further forward in the trawl, and O' Neill et al (2006) found that the panel was most effective in a mid-position. It is likely that these differences are largely due to the trawl design.…”
Section: Discussionmentioning
confidence: 99%
“…It is likely that these differences are largely due to the trawl design. Graham and Kynoch (2001) and Graham et al (2003) used a whitefish trawl, which are generally much larger, with higher headline height and longer extensions (intermediate) than Nephrops trawls, with which Armstrong et al (1998) experimented. This suggests that the square mesh panel needs to be tailored to different trawl designs and may be less universal than the grid system in its application across fisheries.…”
Section: Discussionmentioning
confidence: 99%
“…Gear trials in the North Sea (Robertson and Shanks, 1994), in Scandinavian waters (Ulmstrand and Larson, 1991) and in the Irish Sea (Briggs, 1992) showed that a square-shaped mesh escape panel fitted in the trawl (SMP) reduced discarding of undersized fish. Subsequent Irish Sea studies suggested the most effective position for a SMP is further forward from the net extension than previously thought (Armstrong et al, 1998). Despite these measures a more recent investigation estimated that over 90% of haddock and whiting catch by numbers were still being discarded dead into the Irish Sea (Allen et al, 2002;Anon., 2002Anon., , 2004.…”
Section: Introductionmentioning
confidence: 97%
“…Nevertheless, it has not been well adopted by fishermen due to the shift of knots and subsequent difficulty in repairing (Graham & Kynoch, 2001). Therefore, several studies have been carried out to increase the selectivity by applying square mesh panels to a certain portion of the codend (Armstrong, Briggs & Rihan, 1998;Broadhurst & Kennelly, 1996;Özbilgin, Tosunoğlu, Aydın, Kaykaç & Tokaç, 2005). In general, the panels placed in the upper and the front portions of the codends have shown positive effects on selectivity (Graham, Kynoch & Fryer, 2003;Metin et al, 2005).…”
Section: Introductionmentioning
confidence: 99%