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Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study — Europe PMC PMID:37856523

Source: Europe PMC (en)
Original: https://europepmc.org/article/MED/37856523
DOI: 10.1371/journal.pone.0292727
License (as archived): CC0-1.0
Archived: 2026-10-07T12:01:14.820Z
SHA-256 of the archived text: 80e8b794ca08ad09ac2cecc7f2c8325df86b75914ce162c30bfed007b879b2d0
Stable URL of this page: https://metraipolis.com/documento/dc_3be1972fe438

How to cite

Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study — Europe PMC PMID:37856523 — Europe PMC (en), https://europepmc.org/article/MED/37856523 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_3be1972fe438 (Metraipolis archive dc_3be1972fe438, sha256 80e8b794ca08ad09ac2cecc7f2c8325df86b75914ce162c30bfed007b879b2d0)

BibTeX

@misc{dc3be1972fe438,
  title = {Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study — Europe PMC PMID:37856523},
  howpublished = {Europe PMC (en)},
  url = {https://europepmc.org/article/MED/37856523},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_3be1972fe438; sha256 80e8b794ca08ad09ac2cecc7f2c8325df86b75914ce162c30bfed007b879b2d0},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: Europe PMC (en), https://europepmc.org/article/MED/37856523. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The threat of population declines caused by pelagic longline fisheries in the Atlantic has increased the concern to find strategies that minimize the bycatch and mortality of non-target marine animals. Gear modification, such as the use of circle hooks instead of conventional J-hooks, has been identified as an effective bycatch reduction strategy in different pelagic longline fisheries around the world. This study aimed to verify the effectiveness of the use of circle hooks by quantifying catch rates, relative size selectivity, and anatomical hooking position for the most common target species (swordfish, Xiphias gladius, and blue shark, Prionace glauca), and some bycatch species (loggerhead sea turtles, Caretta caretta, and shortfin mako, Isurus oxyrinchus) caught by the Azorean longline fishing fleet. The trial was conducted for five consecutive years (2000-2004) using eight different types of hooks. In general, the blue shark catches using circle hooks were significantly higher compared to J (Mustad 9/0). The circle hooks also showed high probabilities of catching juvenile blue sharks. Conversely, the circle hooks were efficient in reducing the loggerhead sea turtle bycatch and were related to fewer catches of small sea turtle individuals. The use of circle hooks was also associated with reduced swordfish catches compared to J (Mustad 9/0), and the effect of hook types on length at capture was only significant for Circle (L. & P. 18/0-CLP18) and Ringed Tuna (RT). No significant differences were observed comparing hook type to either catch rates or size selectivity for shortfin mako. Additionally, circle hooks were more likely to lodge in the mouth than in deeper anatomical positions, when compared to J (Mustad 9/0), for the four species analysed. The present study demonstrated that the use of circle hooks could mitigate the impact of the pelagic longline fisheries in the Azores by decreasing the bycatch of sea turtles and reducing animal injuries caused by deep hooking.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (retro-catalogo: tutto il sottoinsieme open access di Europe PMC con licenza libera).
Pubblicazione: PloS one, 2023 (prima pubblicazione 2023-10-19).
Identificativi: PMID 37856523 · PMCID PMC10586631 · DOI 10.1371/journal.pone.0292727.
Descrittori MeSH principali: Sharks; Turtles.
Pagina: https://europepmc.org/article/MED/37856523 — https://doi.org/10.1371/journal.pone.0292727. Autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza dell'articolo dichiarata da Europe PMC: CC0 (la versione è indicata dall'editore sulla pagina). Abstract riportato senza modifiche al contenuto, con attribuzione; deposito marcato CC0.
Letto il 2026-10-07T11:31:06.862Z tramite l'API REST ufficiale di Europe PMC (EMBL-EBI), nel rispetto del robots.txt e del crawl-delay.