Estimated Tooth Replacement Rate in Captive Sand Tiger Sharks (Carcharias taurus Rafinesque, 1810)

Overstrom, Neal A.

doi:10.2307/1446602

Cited by 19 publications

(17 citation statements)

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“…Each method has been used to study tooth replacement rates, but never in a rigorously comparative study. Overstrom (1991) used a fourth method to study tooth replacement rates of captive sandtiger sharks, C. taurus, by counting the number of shed teeth collected from tank substrate. This yielded a tooth replacement rate of 0.48 (60.14) teeth per shark per day.…”

Section: Comparison Of Tooth Files and Tooth Developmentmentioning

confidence: 99%

Development and microstructure of tooth histotypes in the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae) and the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae)

Moyer

Riccio

Bemis

2015

Journal of Morphology

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Elasmobranchs exhibit two distinct arrangements of mineralized tissues in the teeth that are known as orthodont and osteodont histotypes. Traditionally, it has been said that orthodont teeth maintain a pulp cavity throughout tooth development whereas osteodont teeth are filled with osteodentine and lack a pulp cavity when fully developed. We used light microscopy, scanning electron microscopy, and high-resolution micro-computed tomography to compare the structure and development of elasmobranch teeth representing the two histotypes. As an example of the orthodont histotype, we studied teeth of the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae). For the osteodont histotype, we studied teeth of the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae). We document similarities and differences in tooth development and the microstructure of tissues in these two species and review the history of definitions and interpretations of elasmobranch tooth histotypes. We discuss a possible correlation between tooth histotype and tooth replacement and review the history of histotype differentiation in sharks. We find that contrary to a long held misconception, there is no orthodentine in the osteodont teeth of C. carcharias.

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Section: Comparison Of Tooth Files and Tooth Developmentmentioning

confidence: 99%

Development and microstructure of tooth histotypes in the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae) and the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae)

Moyer

Riccio

Bemis

2015

Journal of Morphology

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“…This means that, on average, every 23 hr both sharks potentially lost one tooth each. This figure is somewhat surprising, especially since it is more than double the parallel figure given by Overstrom [1991].…”

Section: Resultsmentioning

confidence: 84%

“…There is one fundamental difference between this study and that of Overstrom [1991]. Whereas Overstrom collected teeth from an empty tank after the sharks left, the tank in Lisbon was small enough to allow daily collections.…”

Section: Resultsmentioning

confidence: 99%

Tooth loss rate from two captive sandtiger sharks (Carcharias taurus)

Correia¹

1999

Zoo Biol.

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For 6 months, two sandtiger sharks (Carcharias taurus) were held captive together in a small enclosure at the Lisbon Zoo. During that period, the gravel was monitored daily for teeth shed by the animals. At the end of their stay, the number of teeth divided by the number of days yielded a tooth loss rate of 1.06 teeth per day per shark. The plotting of mean monthly values for tooth loss rate against mean monthly temperatures showed that these two variables increased with time, suggesting that the animals' metabolism was influenced by the increase in water temperature. Zoo Biol 18:313–317, 1999. © 1999 Wiley‐Liss, Inc.

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“…Tooth replacement has long interested researchers (Bertin, ; Breder Jr., ; Budker, ; Luer et al ., ; Moss, ; Moyer & Bemis, ; Smith et al ., ). Prior studies by Breder Jr. (), Overstrom (), and Correia () have estimated rates of tooth replacement in C. taurus , but the mechanical processes underlying tooth loss and succession within a tooth file remain unclear (Reif et al ., ). Ritter and Dellios () documented spontaneous tooth loss in a live specimen of C. carcharias and concluded that a shearing force between the water and the “back” (lingual?)…”

Section: Discussionmentioning

confidence: 99%

Bite performance and feeding behaviour of the sand tiger sharkCarcharias taurus

Moyer

Shannon

Irschick

2019

Journal of Fish Biology

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This study examines the feeding behaviour and kinematics of three sub-adult sand tiger sharks Carcharias taurus on display at Mystic Aquarium (Mystic, Connecticut, USA). Using high-speed video data from 52 bites, we identify kinematic variables associated with the expansive and compressive phases of the bite. The mean bite duration from the onset of the expansive phase to the conclusion of the compressive phase is mean (± SE) 0.14 ± 0.01 s and across the 10 fastest bites of each individual, the maximum performance average is 0.13 ± 0.01 s. Values of maximum performance do not vary significantly among individuals. When compared with kinematic bite data from species studied previously, these results indicate that body size is not the only determinant factor of bite duration. This study also provides detailed descriptions of feeding behaviours in C. taurus and presents documentation of tooth loss both prior to and during feeding, suggesting that there are multiple mechanisms of tooth loss and use in C. taurus. Finally, we discuss the behavioural and ecological components of prey capture in C. taurus and suggest points of consideration to facilitate interspecific comparisons of prey capture performance in ram-feeding, macrophagous elasmobranchs. K E Y W O R D S

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Estimated Tooth Replacement Rate in Captive Sand Tiger Sharks (Carcharias taurus Rafinesque, 1810)

Cited by 19 publications

References 0 publications

Development and microstructure of tooth histotypes in the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae) and the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae)

Development and microstructure of tooth histotypes in the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae) and the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae)

Tooth loss rate from two captive sandtiger sharks (Carcharias taurus)

Bite performance and feeding behaviour of the sand tiger sharkCarcharias taurus

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