Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua)

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalFisheries Research
Volume97
Issue number1-2
Pages (from-to)59-71
ISSN0165-7836
DOIs
Publication statusPublished - 2009

Keywords

  • Morphology
  • Mesh penetration
  • FISHSELECT
  • Atlantic cod Gadus morhua
  • Size selectivity

Cite this

@article{4ae57294505e4d8c891cf297ef25e726,
title = "Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua)",
abstract = "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.",
keywords = "Morphology, Mesh penetration, FISHSELECT, Atlantic cod Gadus morhua, Size selectivity",
author = "Bent Herrmann and Krag, {Ludvig Ahm} and Rikke Frandsen and Niels Madsen and Bo Lundgren and Karl-Johan St{\ae}hr",
year = "2009",
doi = "10.1016/j.fishres.2009.01.002",
language = "English",
volume = "97",
pages = "59--71",
journal = "Fisheries Research",
issn = "0165-7836",
publisher = "Elsevier",
number = "1-2",

}

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.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Prediction of selectivity from morphological conditions: Methodology and a case study on cod (Gadus morhua)

AU - Herrmann, Bent

AU - Krag, Ludvig Ahm

AU - Frandsen, Rikke

AU - Madsen, Niels

AU - Lundgren, Bo

AU - Stæhr, Karl-Johan

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

M3 - Journal article

VL - 97

SP - 59

EP - 71

JO - Fisheries Research

JF - Fisheries Research

SN - 0165-7836

IS - 1-2

ER -