Prediction of potential net panel selectivity in mesopelagic trawls
Permanent lenke
https://hdl.handle.net/10037/27248Dato
2022-07-17Type
Journal articleTidsskriftartikkel
Peer reviewed
Forfatter
Grimaldo, Eduardo; Herrmann, Bent; Brčić, Jure; Cerbule, Kristine; Brinkhof, Jesse; Grimsmo, Leif; Jacques, NadineSammendrag
The growing interest in harvesting mesopelagic fish species has increased the need for knowledge about how
trawls should be designed for optimizing the catch efficiency of these resources. Since the net herding efficiency
for small mesopelagic fish species is unknown, trawls targeting these species need to consider the potential net
panel selectivity along the entire trawl body. Therefore, trawl engineers and net makers who design trawls for
harvesting mesopelagic species need to know which design parameters, such as mesh size, mesh opening angles,
and trawl tapering angles, can be used along the trawl body to avoid potential net panel selectivity, thus
maximizing catch efficiency. This study addresses these knowledge gaps using an approach based on laboratory
experiments with mesopelagic fish and a simulation model that can help in predicting the potential net panel
selectivity. Three trawl designs that have been used in experimental fisheries in the Northeast Atlantic are
investigated in this study. Two of them (trawl 1 and trawl 2) had small-mesh liners in the belly and extension
piece while the third trawl didn’t. The simulation model shows that trawls with small-mesh liners in the belly
and extension piece reduces panel selectivity and can increase catch efficiency.
Forlag
ElsevierSitering
Grimaldo, Herrmann, Brčić, Cerbule, Brinkhof, Grimsmo, Jacques. Prediction of potential net panel selectivity in mesopelagic trawls. Ocean Engineering. 2022;260Metadata
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