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Increased shark bite survivability revealed by two centuries of Australian records
Tucker, J.P.; Santos, I.R.; Kelaher, B.P.; Green, M.; Clark, G.F.; Butcher, P.A. (2022). Increased shark bite survivability revealed by two centuries of Australian records. NPG Scientific Reports 12(1): 14121. https://dx.doi.org/10.1038/s41598-022-16950-5
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
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| Auteurs | | Top |
- Tucker, J.P.
- Santos, I.R.
- Kelaher, B.P.
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- Green, M.
- Clark, G.F.
- Butcher, P.A.
|
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| Abstract |
The perceived and real threat of shark bites have significant direct health and indirect economic impacts. Here we assess the changing odds of surviving an unprovoked shark bite using 200 years of Australian records. Bite survivability rates for bull (Carcharhinus leucas), tiger (Galeocerdo cuvier) and white (Carcharodon carcharias) sharks were assessed relative to environmental and anthropogenic factors. Survivability of unprovoked bull, tiger and white shark bites were 62, 75 and 53% respectively. Bull shark survivability increased over time between 1807 and 2018. Survivability decreased for both tiger and white sharks when the person was doing an in water activity, such as swimming or diving. Not unsurprisingly, a watercraft for protection/floatation increased survivability to 92% from 30%, and 88% from 45%, for tiger and white sharks respectively. We speculate that survival may be related to time between injury and treatment, indicating the importance of rapid and appropriate medical care. Understanding the predictors of unprovoked bites, as well as survivability (year and water activity), may be useful for developing strategies that reduce the number of serious or fatal human-shark interactions without impacting sharks and other marine wildlife. |
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