Isotopic composition of recent shark teeth as a proxy for environmental conditions

Vennemann, Torsten; Hegner, E.; Cliff, Geremy; Benz, George W.

doi:10.1016/s0016-7037(00)00629-3

Cited by 151 publications

(177 citation statements)

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“…The fish tooth 8 18 0 data present a large scatter (as high as 3.4%o; 1. l%c between different teeth from a single modern shark (Vennemann et al, 2001). Rapid temperature variations within the time interval considered for the reconstruction of the gradient may also contribute to the observed scatter Huber et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

“…The oxygen in biogenic apatite is very tightly bound to phosphorus and is relatively insensitive to dissolution-reprecipitation processes (Kolodny et al, 1983;Lecuyer et al, 1999). In addition, a unique fractionation equation is applicable to all fish species and therefore can be used for extinct species (Kolodny et al, 1983;Vennemann et al, 2001), and fish remains can be collected over a large range of latitudes. Therefore, fish tooth 8 18 0 is especially valuable as an independent proxy to discuss the issue of the Late Cretaceous meridional thermal gradients.…”

Section: Introductionmentioning

confidence: 99%

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Fish tooth δ18O revising Late Cretaceous meridional upper ocean water temperature gradients

Pucéat

Lécuyer

Donnadieu

et al. 2007

Geol

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The oxygen isotope composition of fossil fish teeth, a paleoupper ocean temperature proxy exceptionally resistant to diagenetic alteration, provides new insight on the evolution of the low-to middlelatitude thermal gradient between the middle Cretaceous climatic optimum and the cooler latest Cretaceous period. The new middle Cretaceous low to middle latitude thermal gradient agrees with that previously inferred from planktonic foraminifera 8 ls O recovered from Deep Sea Drilling Project and Ocean Drilling Program drilling sites, although the isotopic temperatures derived from 8 ls O offish teeth are uniformly higher by -3-4 °C. In contrast, our new latest Cretaceous thermal gradient is markedly steeper than those previously published for this period. Fish tooth 8 ls O data demonstrate that low-to middle-latitude thermal gradients of the middle Cretaceous climatic optimum and of the cooler latest Cretaceous are similar to the modern one, despite a cooling of 7 °C between the two periods. Our new results imply that no drastic changes in meridional heat transport are required to explain the Late Cretaceous climate. Based on climate models, such a cooling without any change in the low to middle latitude thermal gradient supports an atmospheric C0 2 decrease as the primary driver of the climatic evolution recorded during the Late Cretaceous.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fish tooth δ18O revising Late Cretaceous meridional upper ocean water temperature gradients

Pucéat

Lécuyer

Donnadieu

et al. 2007

Geol

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“…Since the latter process can cause overprinting of the original biogenic isotopic signals, enamel, which is very resistant to isotopic ex− change, is the most commonly sampled tissue. Kolodny et al (1983) and Vennemann et al (2001) have described the appli− cation of biogenic phosphates to palaeoenvironmental studies, but the approach was limited by analytical difficulties associated with using phosphatic material. Because of this, our palaeoenvironmental reconstructions to date have relied on analyses of biogenic carbonates.…”

Section: Discussion Of the Materialsmentioning

confidence: 99%

Saurichthys (Pisces, Actinopterygii) teeth from the Lower Triassic of Spitsbergen, with comments on their stable isotope composition (δ13C and δ18O) and X−ray microtomography

Błażejowski¹,

Duffin²,

Gieszcz³

et al. 2013

Polish Polar Research

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13 C values ob− tained for durophagous teeth of the hybodont selachian, Lissodus, probably reflects its mi− gratory behaviour and perhaps a greater feeding diversity. X−ray microcomputed tomogra− phy (XMT), a non−destructive technique, is used for the first time in order to elucidate de− tails of tooth histology, the results of which suggest that the method has considerable poten− tial as a future analytical tool.

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“…Here we explore the potential of contemporary white shark teeth, containing only osteodentine (Vennemann et al 2001) and no pulp cavity (filled with living connective tissue and odontoblasts), as a source of DNA. While Ahonen & Stow (2008) successfully extracted DNA from the pulp cavity of teeth and jaws of several shark species from the Carcharhinidae family, DNA recovery from dentine presents some technical challenges, but has been successful from mammal teeth (Pääbo 1989, Höss & Pääbo 1993, Pfeiffer et al 1998.…”

Section: Introductionmentioning

confidence: 99%

DNA from historical and trophy samples provides insights into white shark population origins and genetic diversity

Gubili¹,

Robinson²,

Cliff³

et al. 2015

Endang. Species. Res.

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Characterizing genetic variation by retrospective genotyping of trophy or historical artifacts from endangered species is an important conservation tool. Loss of genetic diversity in top predators such as the white shark Carcharodon carcharias remains an issue, exacerbated in this species by declining, sometimes isolated philopatric populations. We successfully sequenced mitochondrial DNA (mtDNA) D-loop from osteodentine of contemporary South African white shark teeth (from 3 jaws), and from 34 to 129 yr old dried cartilage and skin samples from 1 Pacific Ocean and 5 Mediterranean sharks. Osteodentine-derived sequences from South African fish matched those derived from an individual's finclips, but were generally of poorer quality than those from skin and cartilage of historical samples. Three haplotypes were identified from historical Mediterranean samples (n = 5); 2 individuals had unique sequences and 3 shared the contemporary Mediterranean haplotype. Placement of previously undescribed mtDNA haplotypes from historical material within both the Mediterranean and Pacific clades fits with the accepted intraspecific phylogeny derived from contemporary material, verifying our approaches. The utility of our methodology is in its provision of additional genetic resources from osteodentine (for species lacking tooth pulp) and cartilage of rare and endangered species held in often uncurated, contemporary and historical dry collections. Such material can usefully supplement estimates of connectivity, population history, and stock viability. We confirm the depauperate haplotype diversity of historical Mediterranean sharks, consistent with founding by a small number of Pacific colonizers. The consequent lack of diversity suggests serious challenges for the maintenance of this top predator and the Mediterranean ecosystem.

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Isotopic composition of recent shark teeth as a proxy for environmental conditions

Cited by 151 publications

References 50 publications

Fish tooth δ18O revising Late Cretaceous meridional upper ocean water temperature gradients

Fish tooth δ18O revising Late Cretaceous meridional upper ocean water temperature gradients

Saurichthys (Pisces, Actinopterygii) teeth from the Lower Triassic of Spitsbergen, with comments on their stable isotope composition (δ13C and δ18O) and X−ray microtomography

DNA from historical and trophy samples provides insights into white shark population origins and genetic diversity

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