Browsing Artikler, rapporter og annet (Norges fiskerihøgskole) by Author "Arregi, Luis"
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Escape of hake (Merluccius merluccius), horse mackerel (Trachurus trachurus) and blue whiting (Micromesistius poutassou) in codends with shortened lastridge ropes
Cuende, Elsa; Sistiaga, Manu; Herrmann, Bent; Basterretxea, Mikel; Arregi, Luis (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-02)Diamond meshes in trawl codends have limited openness, which reduces escape opportunities for roundfish. Shortening the lastridge ropes (LR) attached to codend selvedges can increase the availability of open meshes resulting in higher chances of escape. However, this availability does not imply optimal mesh openness, nor does it guarantee use. We estimate the escape probability of hake, horse mackerel ... -
Optimizing size selectivity and catch patterns for hake (Merluccius merluccius) and blue whiting (Micromesistius poutassou) by combining square mesh panel and codend designs
Cuende, Elsa; Sistiaga, Manu; Herrmann, Bent; Arregi, Luis (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-20)Gear modifications in fisheries are usually implemented to obtain catch patterns that meet management objectives. In the Basque bottom trawl fishery, gear regulations include the use of a square mesh panel (SMP) placed at the top panel of the extension piece of the trawl to supplement diamond mesh codend selectivity. However, the catch patterns obtained with this combination have raised concern ... -
Prediction of square mesh panel and codend size selectivity of blue whiting based on fish morphology
Cuende, Elsa; Arregi, Luis; Herrmann, Bent; Sistiaga, Manu; Aboitiz, Xabier (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-24)Square mesh panels (SMPs) are selective devices used extensively to supplement codend size selectivity in trawl fisheries. Therefore, predictions of the effect of mesh size in both SMPs and codends on size selectivity are valuable. Here, we established a framework to predict the size selection of blue whiting through different SMPs and diamond mesh codends based on the morphological characteristics ...