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Large-scale movements and site fidelity of bull sharks (Carcharhinus leucas) at Reunion Island (Indian ocean)
Marc Soria
Institut de recherche pour le developpement
Corresponding Author
ORCiD: https://orcid.org/0000-0001-7409-5872
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Two bull sharks ( Carcharhinus leucas ) were tagged in coastal waters off Reunion Island in the tropical Indian Ocean and where tracked for 174 and 139 days using both popup satellite archival tags (pSAT) and acoustic tags. Both sharks spent a majority of their time inshore (58.1% and 89.9% in the male and the female respectively). The female performed short excursions. The male alternated residence time along the coast with wide ranging movements and performed one extensive open-ocean excursion near a seamount situated at more than 200 km from the island. The differences in the residency and home range of both sharks probably reflect different patterns of foraging and mating behaviors in the male and the female. These results underline the importance of developing risk-mitigation management taking into account the movements of sharks, and of double tagging in telemetry studies that attempt to measure the degree of fidelity of a species.
Keywords
acoustic telemetry, bull shark, large-scale movement, site fidelity, pSAT, Reunion island
Figure 1
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Islander974
commented on 28 January, 2020
The data from this study com from CHARC study in Réunion Island where 38 bull shark where tagged ,So why this study is only with Two bull shark ? and why did they chose in this 38 bull shark the particular one wich made a wide ranging movement (the others one not)? how and why scientist made général statement on a particular and atypic data, is this science ?
Soria
commented on 01 February, 2020
Sorry but you are completely wrong. You might be informed you about a difference between satellite tag (here minipats that was deployed on few sharks) and acoustic tags (deployed, yes, on 38 sharks) before to affirm that "scientist made general statement on a particular and atypic data, is this science"
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This is a preprint. It has not completed peer review.
Short communication
Large-scale movements and site fidelity of bull sharks (Carcharhinus leucas) at Reunion Island (Indian ocean)
Marc Soria
Institut de recherche pour le developpement
Corresponding Author
ORCiD: https://orcid.org/0000-0001-7409-5872
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 16 Jan, 2020
Community comments: 2
Metrics
Comments: 2
PDF Downloads: ...
HTML Views: ...
Subject Areas
Marine and Freshwater Ecology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Two bull sharks ( Carcharhinus leucas ) were tagged in coastal waters off Reunion Island in the tropical Indian Ocean and where tracked for 174 and 139 days using both popup satellite archival tags (pSAT) and acoustic tags. Both sharks spent a majority of their time inshore (58.1% and 89.9% in the male and the female respectively). The female performed short excursions. The male alternated residence time along the coast with wide ranging movements and performed one extensive open-ocean excursion near a seamount situated at more than 200 km from the island. The differences in the residency and home range of both sharks probably reflect different patterns of foraging and mating behaviors in the male and the female. These results underline the importance of developing risk-mitigation management taking into account the movements of sharks, and of double tagging in telemetry studies that attempt to measure the degree of fidelity of a species.
Figure 1
Figure 2
Figure 3
Islander974
commented on 28 January, 2020
The data from this study com from CHARC study in Réunion Island where 38 bull shark where tagged ,So why this study is only with Two bull shark ? and why did they chose in this 38 bull shark the particular one wich made a wide ranging movement (the others one not)? how and why scientist made général statement on a particular and atypic data, is this science ?
Soria
commented on 01 February, 2020
Sorry but you are completely wrong. You might be informed you about a difference between satellite tag (here minipats that was deployed on few sharks) and acoustic tags (deployed, yes, on 38 sharks) before to affirm that "scientist made general statement on a particular and atypic data, is this science"