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Grilly E, Reid K, Thanassekos S. Long-distance movements of Antarctic toothfish (Dissostichus mawsoni) as inferred from tag-recapture data. J Fish Biol. 2021;doi: 10.1111/jfb.14941.
Grilly, E., Reid, K., & Thanassekos, S. (2021). Long-distance movements of Antarctic toothfish (Dissostichus mawsoni) as inferred from tag-recapture data. Journal of fish biology, . https://doi.org/10.1111/jfb.14941
Grilly, Emily, et al. "Long-distance movements of Antarctic toothfish (Dissostichus mawsoni) as inferred from tag-recapture data." Journal of fish biology vol. (2021). doi: https://doi.org/10.1111/jfb.14941
Grilly E, Reid K, Thanassekos S. Long-distance movements of Antarctic toothfish (Dissostichus mawsoni) as inferred from tag-recapture data. J Fish Biol. 2021 Nov 05; doi: 10.1111/jfb.14941. Epub 2021 Nov 05. PMID: 34739139.
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J Fish Biol. 2021 Nov 05; doi: 10.1111/jfb.14941. Epub 2021 Nov 05.

Long-distance movements of Antarctic toothfish (Dissostichus mawsoni) as inferred from tag-recapture data.

Journal of fish biology

Emily Grilly, Keith Reid, Stephane Thanassekos

Affiliations

  1. Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR).

PMID: 34739139 DOI: 10.1111/jfb.14941

Abstract

Examining the causes and consequences of animal movement is fundamental to understanding the ecology of any species. This analysis focuses on Antarctic toothfish movements in the Southern Ocean as inferred from tagging data collected from 2001 to 2019 with a focus on the characteristics of long-distance movements, defined as an individual recaptured greater than 200 km from their release location. The results of this analysis indicate that while adult Antarctic toothfish are generally quite sedentary a small proportion (~7%) move long distances; consistent with findings from previous studies examining movements of toothfish. There appears to be no relationship between time at liberty and long-distance movements, no strong influence of sex, and results indicate a distinct bias in the direction of long-distance travel from release to recapture towards a counter-clockwise direction. Frequency and scale of long-distance movements are likely influenced by localised physical oceanographic processes and life history traits. Knowledge of these movements patterns remains highly important for stock assessments and the design of spatial and temporal fisheries management regimes. This article is protected by copyright. All rights reserved.

This article is protected by copyright. All rights reserved.

Keywords: Antarctic toothfish; Southern Ocean; ecology; fisheries; movements; tag recapture

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