Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators
Fishers aim to optimise cost-benefit ratios of their behaviour when exploiting resources. Avoidance of interactions with marine predators (i.e. their feeding on catches in fishing gear, known as depredation) has recently become an important component of their decisions. How fishers minimise these in...
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ftird:oai:ird.fr:fdi:010082239 2024-09-15T17:44:25+00:00 Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators Janc, A. Guinet, C. Pinaud, D. Richard, G. Monestiez, P. /Tixier, Paul ANTARCTIQUE CROZET KERGUELEN 2021 https://www.documentation.ird.fr/hor/fdi:010082239 EN eng https://www.documentation.ird.fr/hor/fdi:010082239 oai:ird.fr:fdi:010082239 Janc A., Guinet C., Pinaud D., Richard G., Monestiez P., Tixier Paul. Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators. 2021, [Early access], p. [14 p.] experience individual perceptions optimal foraging theory skipper behaviour sustainability of fish stocks whale-fisheries interactions text 2021 ftird 2024-08-15T05:57:40Z Fishers aim to optimise cost-benefit ratios of their behaviour when exploiting resources. Avoidance of interactions with marine predators (i.e. their feeding on catches in fishing gear, known as depredation) has recently become an important component of their decisions. How fishers minimise these interactions whilst maximising fishing success is poorly understood. This issue is addressed in a sub-Antarctic, long-line fishery confronted with extensive depredation by sperm whales Physeter macrocephalus and killer whales Orcinus orca by examining a 15-year data set. Whereas a broad range of behaviours was identified from spatio-temporal and operational descriptors, none combined high fishing success with low frequency of interactions. With experience, fishers favoured exploitation of productive patches with high frequencies of interactions over avoidance behaviours. Such decisions, although potentially optimal in the short term, are likely to intensify pressures on fish stocks and impact depredating whales. Therefore, the present study provides additional evidence to inform management decisions pertaining to the coexistence between fisheries and marine predators. Text Antarc* Antarctic Antarctique* Orca Orcinus orca Physeter macrocephalus IRD (Institute de recherche pour le développement): Horizon |
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Open Polar |
collection |
IRD (Institute de recherche pour le développement): Horizon |
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ftird |
language |
English |
topic |
experience individual perceptions optimal foraging theory skipper behaviour sustainability of fish stocks whale-fisheries interactions |
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experience individual perceptions optimal foraging theory skipper behaviour sustainability of fish stocks whale-fisheries interactions Janc, A. Guinet, C. Pinaud, D. Richard, G. Monestiez, P. /Tixier, Paul Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
topic_facet |
experience individual perceptions optimal foraging theory skipper behaviour sustainability of fish stocks whale-fisheries interactions |
description |
Fishers aim to optimise cost-benefit ratios of their behaviour when exploiting resources. Avoidance of interactions with marine predators (i.e. their feeding on catches in fishing gear, known as depredation) has recently become an important component of their decisions. How fishers minimise these interactions whilst maximising fishing success is poorly understood. This issue is addressed in a sub-Antarctic, long-line fishery confronted with extensive depredation by sperm whales Physeter macrocephalus and killer whales Orcinus orca by examining a 15-year data set. Whereas a broad range of behaviours was identified from spatio-temporal and operational descriptors, none combined high fishing success with low frequency of interactions. With experience, fishers favoured exploitation of productive patches with high frequencies of interactions over avoidance behaviours. Such decisions, although potentially optimal in the short term, are likely to intensify pressures on fish stocks and impact depredating whales. Therefore, the present study provides additional evidence to inform management decisions pertaining to the coexistence between fisheries and marine predators. |
format |
Text |
author |
Janc, A. Guinet, C. Pinaud, D. Richard, G. Monestiez, P. /Tixier, Paul |
author_facet |
Janc, A. Guinet, C. Pinaud, D. Richard, G. Monestiez, P. /Tixier, Paul |
author_sort |
Janc, A. |
title |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
title_short |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
title_full |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
title_fullStr |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
title_full_unstemmed |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
title_sort |
fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
publishDate |
2021 |
url |
https://www.documentation.ird.fr/hor/fdi:010082239 |
op_coverage |
ANTARCTIQUE CROZET KERGUELEN |
genre |
Antarc* Antarctic Antarctique* Orca Orcinus orca Physeter macrocephalus |
genre_facet |
Antarc* Antarctic Antarctique* Orca Orcinus orca Physeter macrocephalus |
op_relation |
https://www.documentation.ird.fr/hor/fdi:010082239 oai:ird.fr:fdi:010082239 Janc A., Guinet C., Pinaud D., Richard G., Monestiez P., Tixier Paul. Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators. 2021, [Early access], p. [14 p.] |
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