Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets
Gillnets made of the biodegradable resin polybutylene succinate co-adipate-co-terephthalate were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon polyamide (PA) gillnets. Both types of gillnets were made of 0.55 mm Ø monofilaments. Howev...
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ftunivtroemsoe:oai:munin.uit.no:10037/19502 2023-05-15T17:43:36+02:00 Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets Grimaldo, Eduardo Herrmann, Bent Jacques, Nadine Su, Biao Vollstad, Jørgen 2020-09-24 https://hdl.handle.net/10037/19502 https://doi.org/10.1371/journal.pone.0234224 eng eng Public Library of Science PLOS ONE RFF Nord-Norge: 282512 Grimaldo Ed, Herrmann B, Jacques N, Su B, Vollstad J. Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets. PLOS ONE. 2020 FRIDAID 1833275 https://doi.org/10.1371/journal.pone.0234224 1932-6203 https://hdl.handle.net/10037/19502 openAccess Copyright 2020 The Author(s) VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1371/journal.pone.0234224 2021-06-25T17:57:43Z Gillnets made of the biodegradable resin polybutylene succinate co-adipate-co-terephthalate were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon polyamide (PA) gillnets. Both types of gillnets were made of 0.55 mm Ø monofilaments. However, since the biodegradable nets are weaker than nylon PA nets when using the same monofilament diameter, we also used biodegradable nets made of 0.60 mm Ø monofilament that had a similar tensile strength to the 0.55 mm Ø nylon PA nets. The relative catch efficiency of the different gillnet types was evaluated over the 2018 autumn fishing season for saithe and cod in northern Norway. For cod, both biodegradable gillnets (0.55 and 0.60 mm) had a significantly lower catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 62.38% (CI: 50.55–74.04) and 54.96% (CI: 35.42–73.52) compared with the nylon PA net, respectively. Similarly for saithe, both biodegradable gillnets (0.55 and 0.60 mm) had a lower estimated catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 83.40% (71.34–94.86) and 83.87% (66.36–104.92), compared with the nylon PA net, respectively. Tensile strength does not explain the differences in catch efficiency between the two gillnet types, since increasing the twine diameter of the biodegradable gillnets (to match the strength of nylon PA gillnets) did not yield similar catch efficiencies. However, the elasticity and stiffness of the materials may be responsible for the differences in catch efficiency between the nylon PA and biodegradable gillnets. Article in Journal/Newspaper Northern Norway University of Tromsø: Munin Open Research Archive Norway PLOS ONE 15 9 e0234224 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Grimaldo, Eduardo Herrmann, Bent Jacques, Nadine Su, Biao Vollstad, Jørgen Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Gillnets made of the biodegradable resin polybutylene succinate co-adipate-co-terephthalate were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon polyamide (PA) gillnets. Both types of gillnets were made of 0.55 mm Ø monofilaments. However, since the biodegradable nets are weaker than nylon PA nets when using the same monofilament diameter, we also used biodegradable nets made of 0.60 mm Ø monofilament that had a similar tensile strength to the 0.55 mm Ø nylon PA nets. The relative catch efficiency of the different gillnet types was evaluated over the 2018 autumn fishing season for saithe and cod in northern Norway. For cod, both biodegradable gillnets (0.55 and 0.60 mm) had a significantly lower catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 62.38% (CI: 50.55–74.04) and 54.96% (CI: 35.42–73.52) compared with the nylon PA net, respectively. Similarly for saithe, both biodegradable gillnets (0.55 and 0.60 mm) had a lower estimated catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 83.40% (71.34–94.86) and 83.87% (66.36–104.92), compared with the nylon PA net, respectively. Tensile strength does not explain the differences in catch efficiency between the two gillnet types, since increasing the twine diameter of the biodegradable gillnets (to match the strength of nylon PA gillnets) did not yield similar catch efficiencies. However, the elasticity and stiffness of the materials may be responsible for the differences in catch efficiency between the nylon PA and biodegradable gillnets. |
format |
Article in Journal/Newspaper |
author |
Grimaldo, Eduardo Herrmann, Bent Jacques, Nadine Su, Biao Vollstad, Jørgen |
author_facet |
Grimaldo, Eduardo Herrmann, Bent Jacques, Nadine Su, Biao Vollstad, Jørgen |
author_sort |
Grimaldo, Eduardo |
title |
Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
title_short |
Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
title_full |
Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
title_fullStr |
Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
title_full_unstemmed |
Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
title_sort |
effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets |
publisher |
Public Library of Science |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19502 https://doi.org/10.1371/journal.pone.0234224 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_relation |
PLOS ONE RFF Nord-Norge: 282512 Grimaldo Ed, Herrmann B, Jacques N, Su B, Vollstad J. Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets. PLOS ONE. 2020 FRIDAID 1833275 https://doi.org/10.1371/journal.pone.0234224 1932-6203 https://hdl.handle.net/10037/19502 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1371/journal.pone.0234224 |
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PLOS ONE |
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15 |
container_issue |
9 |
container_start_page |
e0234224 |
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