Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua)
Publication: Research - peer-review › Journal article – Annual report year: 2009
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Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua). / Herrmann, Bent; Krag, Ludvig Ahm; Frandsen, Rikke; Madsen, Niels; Lundgren, Bo; Stæhr, Karl-Johan.
In: Fisheries Research, Vol. 97, No. 1-2, 2009, p. 59-71.Publication: Research - peer-review › Journal article – Annual report year: 2009
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TY - JOUR
T1 - Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua)
A1 - Herrmann,Bent
A1 - Krag,Ludvig Ahm
A1 - Frandsen,Rikke
A1 - Madsen,Niels
A1 - Lundgren,Bo
A1 - Stæhr,Karl-Johan
AU - Herrmann,Bent
AU - Krag,Ludvig Ahm
AU - Frandsen,Rikke
AU - Madsen,Niels
AU - Lundgren,Bo
AU - Stæhr,Karl-Johan
PB - Elsevier BV
PY - 2009
Y1 - 2009
N2 - The FISHSELECT methodology. tools, and software were developed and used to measure the morphological parameters that determine the ability of cod to penetrate different mesh types, sizes, and openings. The shape of one cross-section at the cod's head was found to explain 97.6% of the mesh penetration results obtained in a laboratory experiment. Design guides predicting the 50% retention length (L50) of different mesh types, sizes, and openings were produced and compared with results from sea trials. Results show that the morphology-based simulations can be used to explain both the within-haul and the between-haul variations previously reported from sea trials. Finally, based on the results obtained, ideas to improve the size selection of cod in towed gear are presented.
AB - The FISHSELECT methodology. tools, and software were developed and used to measure the morphological parameters that determine the ability of cod to penetrate different mesh types, sizes, and openings. The shape of one cross-section at the cod's head was found to explain 97.6% of the mesh penetration results obtained in a laboratory experiment. Design guides predicting the 50% retention length (L50) of different mesh types, sizes, and openings were produced and compared with results from sea trials. Results show that the morphology-based simulations can be used to explain both the within-haul and the between-haul variations previously reported from sea trials. Finally, based on the results obtained, ideas to improve the size selection of cod in towed gear are presented.
KW - Morphology
KW - Mesh penetration
KW - FISHSELECT
KW - Atlantic cod Gadus morhua
KW - Size selectivity
U2 - 10.1016/j.fishres.2009.01.002
DO - 10.1016/j.fishres.2009.01.002
JO - Fisheries Research
JF - Fisheries Research
SN - 0165-7836
IS - 1-2
VL - 97
SP - 59
EP - 71
ER -