Caudal fin in the white shark,Carcharodon carcharias (Lamnidae): A dynamic propeller for fast, efficient swimming

2005 ◽  
Vol 264 (2) ◽  
pp. 233-252 ◽  
Author(s):  
Theagarten Lingham-Soliar
Keyword(s):  
White Shark ◽  
Carcharodon Carcharias ◽  
Caudal Fin

Further evidence of pigmentation change in white sharks, Carcharodon carcharias

2012 ◽  
Vol 63 (12) ◽  
pp. 1215 ◽  
Author(s):  
Rachel Robbins ◽  
Andrew Fox
Keyword(s):  
Site Fidelity ◽  
Movement Patterns ◽  
White Shark ◽  
Population Modelling ◽  
Carcharodon Carcharias ◽  
Caudal Fin ◽  
Present Evidence ◽  
Caudal Lobe ◽  
Pigmentation Change ◽  
Shape And Size

Patterns of pigmentation are widely used for the identification of white sharks, with photographic databases often forming the basis for studies of population modelling, site fidelity and movement patterns. The permanence of these identifying markings is assumed to remain constant. Here, we present evidence of melanism resulting in a change in the shape and size of pigmentation markings on the lower caudal lobe of a female white shark. We found a 33% reduction in size of an islet over a 9-month period. The newly melanised region was 10% darker than the adjoining pigmented areas, and did not match the original pattern. Possible causes of the observed melanism are presented, and the implications for the reliability of using caudal-fin pigmentation patterns for identification purposes are discussed, with a combinational matching approach recommended.

White Shark (Carcharodon carcharias) Attack on a Harbor Porpoise (Phocaena phocaena) in the Bay of Fundy, Canada

2012 ◽  
Vol 19 (4) ◽  
pp. 705-707 ◽  
Author(s):  
Stephen D. Turnbull ◽  
Danielle Dion
Keyword(s):  
White Shark ◽  
Bay Of Fundy ◽  
Harbor Porpoise ◽  
Carcharodon Carcharias

Spatiotemporal Patterns of White Shark (Carcharodon carcharias) Predation at the South Farallon Islands, California

Copeia ◽  
1992 ◽  
Vol 1992 (3) ◽  
pp. 680 ◽  
Author(s):  
A. Peter Klimley ◽  
Scot D. Anderson ◽  
Peter Pyle ◽  
R. P. Henderson
Keyword(s):  
White Shark ◽  
Spatiotemporal Patterns ◽  
The South ◽  
Carcharodon Carcharias

Recent Records of the Great White Shark, Carcharodon carcharias, on the Washington Coast

Copeia ◽  
1951 ◽  
Vol 1951 (3) ◽  
pp. 249 ◽  
Author(s):  
E. H. LeMier
Keyword(s):  
White Shark ◽  
Carcharodon Carcharias ◽  
Great White Shark

scholarly journals Variable response to electric shark deterrents in bull sharks, Carcharhinus leucas

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
A. R. G. Gauthier ◽  
E. Chateauminois ◽  
M. G. Hoarau ◽  
J. Gadenne ◽  
E. Hoarau ◽  
...  
Keyword(s):  
New Caledonia ◽  
White Shark ◽  
Mitigation Measures ◽  
Control Board ◽  
Variable Response ◽  
Carcharodon Carcharias ◽  
Behavioural Changes ◽  
Carcharhinus Leucas ◽  
Bull Shark ◽  
Over Time

Abstract Although relatively rare, human-shark interactions and sharks bites are increasing globally, which has led to the development of various mitigation measures. Electric shark deterrents (ESDs) have, so far, been the most effective personal deterrents, but have only been scientifically tested on one of the species most frequently responsible for shark bites, i.e. white shark (Carcharodon carcharias). We tested the effectiveness of five ESDs (E-Shark Force, NoShark, Rpela v2, Freedom + Surf, Freedom + Surf—Shortboard) on bull sharks, Carcharhinus leucas, over a period of 21 days in September 2019, in New Caledonia. Standardised bait was attached 30 cm below an experimental board that had an active ESD for up to 15 min, or until a bull shark touched the bait or the board. We compared the numbers of baits taken, numbers of passes and reactions around the board, as well as the distance between the sharks and the board among ESDs and against a control board with bait and no active ESD. The Freedom + Surf was the most effective ESD, reducing the amounts of baits taken by 42.3%, while the Rpela v2 and Freedom + Surf—Shortboard also significantly reduced the number of baits taken by 16.5% and 16.2% respectively. Mean distance between sharks and the bait was not affected by the ESDs, but the number of approaches and the proportion of reactions were both significantly higher when the Freedom + Surf was active compared to other ESDs. The effectiveness of all ESDs decreased over time, with the likelihood of the bait being taken increasing and the number of approaches and distance between sharks and the bait decreasing. Our findings show that the ability of ESDs to deter bull shark varies between products, with the Freedom + Surf resulting in the most behavioural changes, followed by the Rpela v2 and Freedom + Surf—Shortboard. However, none of the products tested completely stopped sharks from taking the bait.

scholarly journals Effective number of white shark ( Carcharodon carcharias, Linnaeus) breeders is stable over four successive years in the population adjacent to eastern Australia and New Zealand

2020 ◽  
Author(s):  
Danielle Davenport ◽  
Paul Butcher ◽  
Sara Andreotti ◽  
Conrad Matthee ◽  
Andrew Jones ◽  
...  
Keyword(s):  
New Zealand ◽  
White Shark ◽  
Effective Number ◽  
Carcharodon Carcharias ◽  
Eastern Australia

The White Shark (Carcharodon carcharias ) in the Ancient Peruvian Ceremonial Centre of Huaca Pucllana

2014 ◽  
Vol 26 (1) ◽  
pp. 114-120 ◽  
Author(s):  
A. Altamirano-Sierra ◽  
P. Vargas-Nalvarte
Keyword(s):  
White Shark ◽  
Carcharodon Carcharias
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