Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia
Removal of target catch from longlines by marine mammals, known as depredation, is a global issue creating animal welfare, socioeconomic and management concerns. The killer whale ( Orcinus orca ) is a key species of concern for longline depredation due to their global presence and ability to remove...
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ftunivtasecite:oai:ecite.utas.edu.au:141154 2023-05-15T13:59:46+02:00 Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia Cieslak, M Tixier, P Richard, G Hindell, M Arnould, JPY Lea, M-A 2021 https://doi.org/10.1016/j.fishres.2020.105748 http://ecite.utas.edu.au/141154 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.fishres.2020.105748 http://purl.org/au-research/grants/arc/LP160100329 Cieslak, M and Tixier, P and Richard, G and Hindell, M and Arnould, JPY and Lea, M-A, Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia, Fisheries Research, 233 Article 105748. ISSN 0165-7836 (2021) [Refereed Article] http://ecite.utas.edu.au/141154 Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management Refereed Article PeerReviewed 2021 ftunivtasecite https://doi.org/10.1016/j.fishres.2020.105748 2021-09-20T22:16:43Z Removal of target catch from longlines by marine mammals, known as depredation, is a global issue creating animal welfare, socioeconomic and management concerns. The killer whale ( Orcinus orca ) is a key species of concern for longline depredation due to their global presence and ability to remove large quantities of caught fish. Currently, data on whale behaviours around fishing vessels, including timing of depredation and ability to follow vessels, is not completely understood. This lack of knowledge prevents a complete assessment of depredation both spatially and temporally, which is important to reduce the chance of underestimating depredation events. Our study utilised both photo-identification and acoustics as complementary approaches to investigate depredation on the blue-eye trevalla ( Hyperoglyphe antarctica ) demersal longline fishery in Australia. Of the 14 d when depredations were recorded acoustic detection of killer whales prior to visual confirmations occurred in 13 (93 %). Photo-identification revealed individuals repeatedly interacting with the vessel, sometimes over long distances (>1000 km), with increasing inter-depredation times as the vessel travelled further. These findings suggest that killer whales move to known fishing areas well before detection from surface monitoring occurs. While this study has revealed aspects of killer whale behaviours when encountering and interacting with longline fisheries, it has highlighted how traditional monitoring methods underestimate depredation and that this aspect needs to be further investigated. Article in Journal/Newspaper Antarc* Antarctica Killer Whale Orca Orcinus orca Killer whale eCite UTAS (University of Tasmania) Fisheries Research 233 105748 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management |
spellingShingle |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management Cieslak, M Tixier, P Richard, G Hindell, M Arnould, JPY Lea, M-A Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
topic_facet |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management |
description |
Removal of target catch from longlines by marine mammals, known as depredation, is a global issue creating animal welfare, socioeconomic and management concerns. The killer whale ( Orcinus orca ) is a key species of concern for longline depredation due to their global presence and ability to remove large quantities of caught fish. Currently, data on whale behaviours around fishing vessels, including timing of depredation and ability to follow vessels, is not completely understood. This lack of knowledge prevents a complete assessment of depredation both spatially and temporally, which is important to reduce the chance of underestimating depredation events. Our study utilised both photo-identification and acoustics as complementary approaches to investigate depredation on the blue-eye trevalla ( Hyperoglyphe antarctica ) demersal longline fishery in Australia. Of the 14 d when depredations were recorded acoustic detection of killer whales prior to visual confirmations occurred in 13 (93 %). Photo-identification revealed individuals repeatedly interacting with the vessel, sometimes over long distances (>1000 km), with increasing inter-depredation times as the vessel travelled further. These findings suggest that killer whales move to known fishing areas well before detection from surface monitoring occurs. While this study has revealed aspects of killer whale behaviours when encountering and interacting with longline fisheries, it has highlighted how traditional monitoring methods underestimate depredation and that this aspect needs to be further investigated. |
format |
Article in Journal/Newspaper |
author |
Cieslak, M Tixier, P Richard, G Hindell, M Arnould, JPY Lea, M-A |
author_facet |
Cieslak, M Tixier, P Richard, G Hindell, M Arnould, JPY Lea, M-A |
author_sort |
Cieslak, M |
title |
Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
title_short |
Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
title_full |
Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
title_fullStr |
Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
title_full_unstemmed |
Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia |
title_sort |
acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in south east australia |
publisher |
Elsevier Science Bv |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.fishres.2020.105748 http://ecite.utas.edu.au/141154 |
genre |
Antarc* Antarctica Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Antarc* Antarctica Killer Whale Orca Orcinus orca Killer whale |
op_relation |
http://dx.doi.org/10.1016/j.fishres.2020.105748 http://purl.org/au-research/grants/arc/LP160100329 Cieslak, M and Tixier, P and Richard, G and Hindell, M and Arnould, JPY and Lea, M-A, Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia, Fisheries Research, 233 Article 105748. ISSN 0165-7836 (2021) [Refereed Article] http://ecite.utas.edu.au/141154 |
op_doi |
https://doi.org/10.1016/j.fishres.2020.105748 |
container_title |
Fisheries Research |
container_volume |
233 |
container_start_page |
105748 |
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1766268564611792896 |