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

Correia, José Manuel

doi:10.1002/(sici)1098-2361(1999)18:4<313::aid-zoo5>3.0.co;2-d

Cited by 20 publications

(2 citation statements)

References 5 publications

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“…A higher number of teeth per tooth file might be linked with a faster tooth replacement (Moyer et al, 2015 ). However, tooth replacement rates are impacted by various factors, including tooth imbrication patterns or water temperature (Correia, 1999 ; Luer et al, 1990 ; Strasburg, 1963 ).…”

Section: Discussionmentioning

confidence: 99%

Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark Galeocerdo cuvier (Chondrichthyes, Galeocerdidae)

et al. 2022

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Section: Discussionmentioning

confidence: 99%

Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark Galeocerdo cuvier (Chondrichthyes, Galeocerdidae)

et al. 2022

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“…As individuals grow and disperse over time, they drop teeth at a constant rate [ 29 ], such that the accumulation of differently sized dentition mirrors the size-distribution of sharks visiting each site. While tooth shedding rates can vary seasonally [ 30 , 31 ], the inclusion of this dynamic has very little effect on model results (electronic supplementary material, appendix III).…”

Section: Methodsmentioning

confidence: 99%

Decoding the dynamics of dental distributions: insights from shark demography and dispersal

et al. 2022

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Shark teeth are one of the most abundant vertebrate fossils, and because tooth size generally correlates with body size, their accumulations document the size structure of populations. Understanding how ecological and environmental processes influence size structure, and how this extends to influence these dental distributions, may offer a window into the ecological and environmental dynamics of past and present shark populations. Here, we examine the dental distributions of sand tigers, including extant Carcharias taurus and extinct Striatolamia macrota , to reconstruct the size structure for a contemporary locality and four Eocene localities. We compare empirical distributions against expectations from a population simulation to gain insight into potential governing ecological processes. Specifically, we investigate the influence of dispersal flexibility to and from protected nurseries. We show that changing the flexibility of initial dispersal of juveniles from the nursery and annual migration of adults to the nursery explains a large amount of dental distribution variability. Our framework predicts dispersal strategies of an extant sand tiger population, and supports nurseries as important components of sand tiger life history in both extant and Eocene populations. These results suggest nursery protection may be vital for shark conservation with increasing anthropogenic impacts and climate change.

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

Cited by 20 publications

References 5 publications

Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark Galeocerdo cuvier (Chondrichthyes, Galeocerdidae)

Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark Galeocerdo cuvier (Chondrichthyes, Galeocerdidae)

Decoding the dynamics of dental distributions: insights from shark demography and dispersal

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

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