Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau
The emergence of longline fishing for Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau over the past two decades is concomitant with the development of depredation-type interactions by sperm whales (Physeter macrocephalus). Through a unique collaboration between the French an...
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Australian Antarctic Division
2019
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Online Access: | https://eprints.utas.edu.au/31734/ https://eprints.utas.edu.au/31734/1/135125%20-%20Fisheries%20interaction%20data%20suggest%20variations%20in%20the%20distribution%20of%20sperm%20whales%20on%20the%20Kerguelen%20Plateau.pdf http://heardisland.antarctica.gov.au/research/kerguelen-plateau-symposium/the-kerguelen-plateau-marine-ecosystems-and-fisheries |
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ftunivtasmania:oai:eprints.utas.edu.au:31734 2023-05-15T16:33:55+02:00 Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau Tixier, P Welsford, DC Lea, M-A Hindell, MA Guinet, C Janc, A Richard, G Gasco, N Duhamel, G Arangio, R Villanueva, MC Suberg, L Arnould, JPY Welsford, D Dell, J Duhamel, G 2019 application/pdf https://eprints.utas.edu.au/31734/ https://eprints.utas.edu.au/31734/1/135125%20-%20Fisheries%20interaction%20data%20suggest%20variations%20in%20the%20distribution%20of%20sperm%20whales%20on%20the%20Kerguelen%20Plateau.pdf http://heardisland.antarctica.gov.au/research/kerguelen-plateau-symposium/the-kerguelen-plateau-marine-ecosystems-and-fisheries en eng Australian Antarctic Division https://eprints.utas.edu.au/31734/1/135125%20-%20Fisheries%20interaction%20data%20suggest%20variations%20in%20the%20distribution%20of%20sperm%20whales%20on%20the%20Kerguelen%20Plateau.pdf Tixier, P, Welsford, DC, Lea, M-A orcid:0000-0001-8318-9299 , Hindell, MA orcid:0000-0002-7823-7185 , Guinet, C, Janc, A, Richard, G, Gasco, N, Duhamel, G, Arangio, R, Villanueva, MC, Suberg, L and Arnould, JPY 2019 , 'Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau', in D Welsford and J Dell and G Duhamel (eds.), The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium , Australian Antarctic Division, Kingston, Tasmania, pp. 259-270 . fisheries interactions sperm whale Patagonian toothfish Kerguelen depredation Conference Publication PeerReviewed 2019 ftunivtasmania 2021-09-20T22:18:03Z The emergence of longline fishing for Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau over the past two decades is concomitant with the development of depredation-type interactions by sperm whales (Physeter macrocephalus). Through a unique collaboration between the French and the Australian fisheries operating respectively around Kerguelen, and Heard Island and McDonald Islands (HIMI), this study preliminarily investigated the spatio–temporal variations of the rate of occurrence of sperm whale depredation on the Kerguelen Plateau. Between 2011 and 2016, sperm whales depredated toothfish on 29.1% of all longline sets and over 49.4% of the fished area. The probability of vessels to experience depredation decreased with the latitude and decreased in winter. Vessels operating in Kerguelen experienced significantly higher rates of occurrence of sperm whale depredation (33.2 ± 4.5% of sets; 48.2 ± 7.2% of the area) than vessels operating in HIMI (3.1 ± 1.2% of sets; 5.4 ± 2.0% of the area) over the 2011–2016 period, but also during any season of the year. The results suggested that heterogeneity in the distribution of sperm whales is likely a key driver of depredation. The Kerguelen Plateau fisheries represent a unique opportunity to investigate the spatial factors influencing this distribution, and therefore to predict the occurrence of depredation. Conference Object Heard Island McDonald Islands Patagonian Toothfish Physeter macrocephalus Sperm whale University of Tasmania: UTas ePrints Kerguelen Heard Island Heard Island ENVELOPE(73.510,73.510,-53.117,-53.117) Heard ENVELOPE(73.510,73.510,-53.117,-53.117) McDonald Islands ENVELOPE(72.600,72.600,-53.033,-53.033) |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
fisheries interactions sperm whale Patagonian toothfish Kerguelen depredation |
spellingShingle |
fisheries interactions sperm whale Patagonian toothfish Kerguelen depredation Tixier, P Welsford, DC Lea, M-A Hindell, MA Guinet, C Janc, A Richard, G Gasco, N Duhamel, G Arangio, R Villanueva, MC Suberg, L Arnould, JPY Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
topic_facet |
fisheries interactions sperm whale Patagonian toothfish Kerguelen depredation |
description |
The emergence of longline fishing for Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau over the past two decades is concomitant with the development of depredation-type interactions by sperm whales (Physeter macrocephalus). Through a unique collaboration between the French and the Australian fisheries operating respectively around Kerguelen, and Heard Island and McDonald Islands (HIMI), this study preliminarily investigated the spatio–temporal variations of the rate of occurrence of sperm whale depredation on the Kerguelen Plateau. Between 2011 and 2016, sperm whales depredated toothfish on 29.1% of all longline sets and over 49.4% of the fished area. The probability of vessels to experience depredation decreased with the latitude and decreased in winter. Vessels operating in Kerguelen experienced significantly higher rates of occurrence of sperm whale depredation (33.2 ± 4.5% of sets; 48.2 ± 7.2% of the area) than vessels operating in HIMI (3.1 ± 1.2% of sets; 5.4 ± 2.0% of the area) over the 2011–2016 period, but also during any season of the year. The results suggested that heterogeneity in the distribution of sperm whales is likely a key driver of depredation. The Kerguelen Plateau fisheries represent a unique opportunity to investigate the spatial factors influencing this distribution, and therefore to predict the occurrence of depredation. |
author2 |
Welsford, D Dell, J Duhamel, G |
format |
Conference Object |
author |
Tixier, P Welsford, DC Lea, M-A Hindell, MA Guinet, C Janc, A Richard, G Gasco, N Duhamel, G Arangio, R Villanueva, MC Suberg, L Arnould, JPY |
author_facet |
Tixier, P Welsford, DC Lea, M-A Hindell, MA Guinet, C Janc, A Richard, G Gasco, N Duhamel, G Arangio, R Villanueva, MC Suberg, L Arnould, JPY |
author_sort |
Tixier, P |
title |
Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
title_short |
Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
title_full |
Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
title_fullStr |
Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
title_full_unstemmed |
Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau |
title_sort |
fisheries interaction data suggest variations in the distribution of sperm whales on the kerguelen plateau |
publisher |
Australian Antarctic Division |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/31734/ https://eprints.utas.edu.au/31734/1/135125%20-%20Fisheries%20interaction%20data%20suggest%20variations%20in%20the%20distribution%20of%20sperm%20whales%20on%20the%20Kerguelen%20Plateau.pdf http://heardisland.antarctica.gov.au/research/kerguelen-plateau-symposium/the-kerguelen-plateau-marine-ecosystems-and-fisheries |
long_lat |
ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(72.600,72.600,-53.033,-53.033) |
geographic |
Kerguelen Heard Island Heard Island Heard McDonald Islands |
geographic_facet |
Kerguelen Heard Island Heard Island Heard McDonald Islands |
genre |
Heard Island McDonald Islands Patagonian Toothfish Physeter macrocephalus Sperm whale |
genre_facet |
Heard Island McDonald Islands Patagonian Toothfish Physeter macrocephalus Sperm whale |
op_relation |
https://eprints.utas.edu.au/31734/1/135125%20-%20Fisheries%20interaction%20data%20suggest%20variations%20in%20the%20distribution%20of%20sperm%20whales%20on%20the%20Kerguelen%20Plateau.pdf Tixier, P, Welsford, DC, Lea, M-A orcid:0000-0001-8318-9299 , Hindell, MA orcid:0000-0002-7823-7185 , Guinet, C, Janc, A, Richard, G, Gasco, N, Duhamel, G, Arangio, R, Villanueva, MC, Suberg, L and Arnould, JPY 2019 , 'Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau', in D Welsford and J Dell and G Duhamel (eds.), The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium , Australian Antarctic Division, Kingston, Tasmania, pp. 259-270 . |
_version_ |
1766023666904072192 |